Category: Check Engine Light

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Automotive Repair Videos Check Engine Light DIY Auto Repair

Why is My Check Engine Light On “Here’s What to Do”

Ok, so your check engine light is on so in this video, we will go over why my check engine light would come on and the different ways it could be illuminated. It could be on steady, the check engine light blinking to flashing or it could just be coming on when the key is turned on. So what does check engine light really mean and can you drive your vehicle with the check engine light on? I will also go over how to diagnose and reset the check engine light yourself along with the 4 Most common reasons why your check engine light comes on This a problem so easy any shade tree mechanic or DIY’er can take on to same money ant time at the automotive repair shop. But to do this, first, you will need to start with an OBD2 code reader. witch, you can pick up on Amazon for petty cheap here: https://amzn.to/3VPSZFd

Why Is My Check Engine Light On? What You Should Do!

If you’ve ever experienced that sudden moment of panic when your car’s check engine light turns on, you’re not alone. The check engine light is a common issue that many car owners face, and it can be both frustrating and confusing. In this article, we’ll explore the reasons behind the check engine light, what it means, and what you should do when it lights up.

Common Reasons for the Check Engine Light

  1. Check engine light on: This is a general indication that there’s an issue with your vehicle that needs attention. It could be something minor or a sign of a more serious problem.
  2. Why is my check engine light on: The check engine light can illuminate for various reasons, such as a loose gas cap, a faulty oxygen sensor, or issues with the catalytic converter.
  3. Check engine light blinking: A blinking check engine light typically indicates a serious issue, such as an engine misfire, that requires immediate attention.
  4. Check engine light flashing: Similar to a blinking light, a flashing check engine light is a warning sign of a potentially severe problem that could cause damage to your engine.
  5. What does check engine light mean: The check engine light means that the vehicle’s onboard diagnostics system has detected a malfunction. This can range from minor issues like a loose gas cap to more significant problems like engine misfires or issues with the emissions system.
  6. How to reset check engine light: After addressing the issue, you may need to reset the check engine light. This can often be done by using an OBD-II scanner or by disconnecting the battery for a few minutes.
  7. Check engine light diagnostic: Using an OBD-II scanner, you can read the diagnostic trouble codes (DTCs) stored in your vehicle’s computer. These codes can help you pinpoint the exact issue.
  8. Check engine light codes: Common DTCs include codes like P0171 (System Too Lean) and P0300 (Random/Multiple Cylinder Misfire). Each code corresponds to a specific problem that needs to be addressed.
  9. Can I drive with check engine light on: While it might be tempting to ignore the check engine light, it’s important to understand the potential risks. Driving with the light on can sometimes cause further damage to your vehicle, especially if the issue is severe.
  10. Check engine light causes: Common causes of the check engine light include a loose gas cap, faulty spark plugs, failing oxygen sensors, and problems with the catalytic converter.

What You Should Do

  1. Check for Simple Fixes: Start by checking if the gas cap is loose. This is one of the most common and simplest fixes for the check engine light.
  2. Use an OBD-II Scanner: An OBD-II scanner can read the trouble codes stored in your vehicle’s computer. This will give you a clearer idea of what’s causing the problem.
  3. Look Up the Codes: Once you have the codes, you can look them up online or in your vehicle’s service manual to understand the specific issue.
  4. Address the Problem: Depending on the severity of the issue, you might be able to fix it yourself. For example, replacing a faulty spark plug or oxygen sensor is often a straightforward task. However, more complex issues like a failing catalytic converter might require professional help.
  5. Reset the Light: After fixing the problem, reset the check engine light using your OBD-II scanner or by disconnecting the battery for a few minutes.
  6. Monitor Your Vehicle: Keep an eye on your vehicle’s performance after the check engine light has been reset. If the light comes back on, it might indicate a recurring issue that needs further investigation.

Conclusion

Dealing with a check engine light can be daunting, but with the right tools and knowledge, you can diagnose and fix many common issues yourself. Remember, it’s always better to address the problem sooner rather than later to avoid potential damage to your vehicle. If you’re ever in doubt, don’t hesitate to seek professional help.

For a detailed walkthrough on diagnosing and fixing check engine light issues, check out our video on YouTube.

By understanding why your check engine light is on and knowing what steps to take, you can ensure your vehicle runs smoothly and efficiently.

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Check Engine Light Chevy Repair

How to Fix Chevy P0172 and P0175 Codes: Fuel System Running Rich

If you’re seeing the P0172 or P0175 code on your Chevy, it means your vehicle’s fuel system is running rich, which indicates that the engine is receiving too much fuel and not enough air. This can lead to poor fuel economy, increased emissions, and potential engine damage. Here’s a comprehensive guide on how to diagnose and fix these issues.

What Do P0172 and P0175 Codes Mean?

  • P0172: System Too Rich (Bank 1)
  • P0175: System Too Rich (Bank 2)

These codes indicate that the air-fuel mixture is too rich on either bank 1 or bank 2 of your engine.

Did this all with the scan tool I used, which you can get on Amazon here: https://amzn.to/3VDOM7w

Common Causes of P0172 and P0175 Codes

  1. Dirty or Faulty Mass Air Flow (MAF) Sensor: A dirty or faulty MAF sensor can send incorrect readings to the engine control unit (ECU), leading to a rich condition.
  2. Faulty Oxygen Sensors: Oxygen sensors that are not functioning properly can fail to provide accurate readings of the exhaust gases, causing the ECU to deliver too much fuel.
  3. Fuel Pressure Issues: High fuel pressure due to a faulty fuel pressure regulator or a clogged fuel return line can result in too much fuel being delivered to the engine.
  4. Leaking Fuel Injectors: Fuel injectors that are stuck open or leaking can cause an excessive amount of fuel to enter the combustion chamber.
  5. Faulty Engine Coolant Temperature Sensor: If this sensor gives incorrect readings, the ECU may think the engine is always cold, thus providing more fuel than necessary.
  6. Vacuum Leaks: Though less common for a rich condition, certain vacuum leaks can cause incorrect sensor readings, leading to a rich mixture.

Step-by-Step Guide to Fixing P0172 and P0175 Codes

  1. Check and Clean the MAF Sensor:
    • Disconnect the MAF sensor and inspect it for dirt and debris.
    • Use a MAF sensor cleaner to clean the sensor.
    • Reinstall the sensor and clear the codes to see if they return.
  2. Inspect and Replace Oxygen Sensors:
    • Use an OBD-II scanner to check the voltage readings of the oxygen sensors.
    • Replace any sensors that are not providing proper readings.
  3. Examine Fuel Pressure:
    • Use a fuel pressure gauge to check the pressure at the fuel rail.
    • If the pressure is too high, inspect the fuel pressure regulator and fuel return line for issues.
  4. Check Fuel Injectors:
    • Remove the fuel injectors and inspect them for leaks or blockages.
    • Clean or replace any faulty injectors.
  5. Test the Engine Coolant Temperature Sensor:
    • Use a multimeter to test the resistance of the sensor.
    • Replace the sensor if it is not within the manufacturer’s specifications.
  6. Inspect for Vacuum Leaks:
    • Use a smoke machine or carburetor cleaner to check for vacuum leaks.
    • Repair any leaks found.

Preventive Measures

  • Regular Maintenance: Regularly clean the MAF sensor and replace oxygen sensors as part of your vehicle’s maintenance schedule.
  • Use Quality Fuel: Using high-quality fuel can prevent build-up in the fuel system.
  • Monitor Engine Performance: Pay attention to changes in engine performance, fuel economy, and exhaust emissions.

Conclusion

Fixing P0172 and P0175 codes involves a systematic approach to identify and resolve the root cause of the rich condition. By following these steps, you can restore the correct air-fuel mixture in your Chevy, improving its performance and fuel efficiency. If the problem persists, it may be best to consult a professional mechanic.

For more detailed guidance, refer to reputable automotive resources and forums where experienced mechanics share their insights and troubleshooting tips.

By maintaining your vehicle properly and addressing issues promptly, you can avoid the negative effects of running a rich fuel mixture and keep your Chevy running smoothly.

References:

Use these sources for more detailed and specific guidance on fixing P0172 and P0175 codes in your Chevy.

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Check Engine Light

Hyundai Sonata Flashing Check Engine Light Fix!

Experiencing a flashing check engine light in your Hyundai Sonata can be alarming, but don’t worry – we’re here to help you fix it. In this guide, we’ll explore the common causes of a flashing check engine light, how to diagnose the issue, and steps to fix it.

Common Causes of a Flashing Check Engine Light

  1. Ignition System Issues: Faulty spark plugs, ignition coils, or wiring.
  2. Fuel System Problems: Clogged fuel injectors or a failing fuel pump.
  3. Engine Misfires: Can result from various components, including sensors.
  4. Emissions Control Malfunctions: Issues with the catalytic converter or oxygen sensors.

Symptoms of a Flashing Check Engine Light

  • Engine running rough or misfiring
  • Reduced power and performance
  • Unusual noises from the engine
  • Decreased fuel efficiency

Diagnosing the Problem

  1. OBD-II Scanner: Use an OBD-II scanner to read the error codes stored in your car’s computer.
  2. Visual Inspection: Check for obvious signs of damage or wear in the ignition and fuel systems.
  3. Component Testing: Test spark plugs, ignition coils, and fuel injectors for proper operation.

How to Fix the Issue

  1. Replace Faulty Spark Plugs or Coils: Often, misfires are caused by worn spark plugs or faulty ignition coils.
  2. Clean or Replace Fuel Injectors: Ensure the fuel injectors are not clogged and are delivering fuel properly.
  3. Check and Replace Sensors: Faulty oxygen sensors or mass airflow sensors can cause the check engine light to flash.
  4. Catalytic Converter Inspection: Ensure the catalytic converter is not clogged or damaged.

Cost of Repairs

  • Diagnostic Fees: $50 – $100
  • Spark Plugs: $10 – $50 each
  • Ignition Coils: $50 – $200 each
  • Fuel Injectors: $50 – $300 each
  • Labor Costs: $100 – $150 per hour

Conclusion

Fixing a flashing check engine light in your Hyundai Sonata involves understanding the potential causes, accurately diagnosing the issue, and replacing faulty components. By following this guide, you can address the problem effectively, saving time and money on repairs. For more detailed instructions, watch our comprehensive video tutorial.

By understanding and addressing the causes of a flashing check engine light, you ensure your Hyundai Sonata remains reliable and efficient, avoiding costly repairs and extended downtime.

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Check Engine Light How To

Decoding the P0008 Code: Chevy Traverse Troubleshooting Guide

Discovering a P0008 code on your Chevy Traverse can be unsettling, but understanding the root cause and potential solutions is key to regaining confidence in your vehicle’s performance. In this comprehensive guide, we’ll delve into the intricacies of the P0008 code, covering everything from repair costs to common causes and the parts needed for a fix. Armed with this knowledge, you’ll be well-equipped to tackle the issue head-on and get your Chevy Traverse back on the road in no time.

Understanding the P0008 Code:

The P0008 code indicates a potential issue with the engine’s timing, specifically relating to the camshaft position and the correlation with the crankshaft. This can lead to issues with the engine’s performance and fuel efficiency, making it essential to address the problem promptly.

Repair Costs and Service Bulletins:

When faced with a P0008 code, it’s natural to be concerned about repair costs. The expenses associated with fixing this issue can vary depending on the severity of the problem and the parts needed for the repair. Additionally, consulting service bulletins from Chevrolet can provide valuable insights into common issues and recommended repair procedures.

Most Common Causes of P0008:

Several factors can contribute to the appearance of a P0008 code, including issues with camshaft timing, problems with the engine’s variable valve timing (VVT) system, or issues with the timing chain. By understanding these common causes, you can more effectively diagnose and address the problem.

Cost of Repairs and Parts Needed:

Repairing a P0008 code may involve replacing components such as the camshaft position sensor, crankshaft position sensor, or the variable valve timing (VVT) solenoid. The cost of these parts can vary depending on factors such as brand, quality, and where they are purchased. Additionally, labor costs associated with the repair should be taken into account when budgeting for the repair.

Ten Reasons you vehicle could set code P0008:

  1. Camshaft Timing Issues: One of the primary reasons for a P0008 code is a problem with camshaft timing. This could be due to a malfunctioning camshaft position sensor, timing chain, or other related components.
  2. Variable Valve Timing (VVT) System Malfunction: Problems with the VVT system can also trigger a P0008 code. This might include issues with the VVT solenoid, which controls the timing of the engine’s valves.
  3. Crankshaft Position Sensor Failure: A faulty crankshaft position sensor can disrupt the synchronization between the camshaft and crankshaft, leading to a P0008 code.
  4. Timing Chain Wear or Stretch: Over time, the timing chain can wear out or stretch, causing the camshaft and crankshaft to fall out of sync and triggering a P0008 code.
  5. Engine Overheating: Excessive engine heat can cause components like the timing chain to expand or warp, affecting their performance and potentially leading to a P0008 code.
  6. Oil Contamination: Contaminants in the engine oil can interfere with the operation of components like the VVT solenoid, leading to timing issues and a P0008 code.
  7. Incorrect Oil Viscosity: Using the wrong type or viscosity of engine oil can affect the performance of the VVT system and trigger a P0008 code.
  8. Faulty Engine Control Module (ECM): A malfunctioning ECM can misinterpret sensor data and cause timing issues that result in a P0008 code.
  9. Electrical Issues: Problems with the wiring or connectors associated with the camshaft and crankshaft sensors can lead to erratic readings and trigger a P0008 code.
  10. Incorrect Installation of Timing Components: Improper installation of timing components during engine repair or maintenance can cause the camshaft and crankshaft to fall out of alignment, resulting in a P0008 code.

The Cost to Repair p0008:

The cost to repair a P0008 code can vary depending on several factors, including the issue’s underlying cause, the damage’s extent, and the repair shop’s labor rates. Here are some potential costs associated with repairing a P0008 code:

  1. Diagnostic Fee: Before any repairs can be made, the vehicle will need to undergo diagnostic testing to identify the root cause of the P0008 code. Diagnostic fees typically range from $50 to $150, depending on the shop and location.
  2. Parts Replacement: The cost of parts needed to repair a P0008 code can vary widely depending on the specific components needing replacement. This may include items such as the camshaft position sensor, crankshaft position sensor, timing chain, timing belt, VVT solenoid, or other related parts. Parts costs can range from $100 to $500 or more, depending on the vehicle make and model and the quality of the parts used.
  3. Labor Costs: Labor rates for automotive repairs can vary significantly depending on the shop’s location, reputation, and expertise. Labor costs for repairing a P0008 code may range from $100 to $300 per hour, and the amount of time required for the repair will depend on the complexity of the issue and the accessibility of the affected components.
  4. Additional Costs: In some cases, additional costs may be incurred for related services such as fluid changes, engine cleaning, or other maintenance tasks that may be necessary as part of the repair process.

Overall, the total cost to repair a P0008 code can range from a few hundred dollars to over a thousand dollars, depending on the specific circumstances. It’s essential to consult with a qualified mechanic or repair shop to get an accurate estimate based on your vehicle’s make, model, and condition.

Conclusion:

Facing a P0008 code on your Chevy Traverse can be intimidating, but with the right knowledge and resources, you can confidently address the issue. By understanding repair costs, consulting service bulletins, identifying common causes, and determining the cost of repairs and parts needed, you can effectively troubleshoot and fix the problem. Don’t let the P0008 code hold you back – tackle it head-on and get back to enjoying the performance and reliability of your Chevy Traverse.

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Automotive Repair Videos Check Engine Light Chevy Repair

Chevy / GM P0171 or P0174 System To Lean Bank 1 Bank 2

I’m going to go over some common issues causing the P0171 and P0174 error codes in Chevy and GM vehicles, indicating a system too lean in both Bank 1 and Bank 2.

Under standing fuel trim numbers can aid greatly in get to the source of the problem. We start by conducting a smoke test on the intake to detect any leaks. Next, we assess the condition and performance of the mass air flow sensor and fuel pressure test to ensure they meet specifications.

Further inspections include the PCV valve and the brake booster, along with other critical components like fuel pressure regulator, that could lead to a lean-running engine.

Whether you’re a DIY enthusiast looking to understand more about your vehicle or a professional mechanic honing your skills, this video provides step-by-step guidance on diagnosing and fixing lean engine problems and understanding fuel trim reading on a scanner.

#ChevyRepair#LeanBank1Bank2#AutoRepair#CarMaintenance#DIYMechanic#P0171#P0174#FlatRateMechanic

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Check Engine Light

How to Find a Small EVAP Leak p0442 “No Leak”

P0442 code, which signals a Small EVAP leak (Evaporative Emission Control System). Understanding the P0442 Code: let’s solve this small EVAP leak mystery!

The P0442 error code is an alert from your vehicle’s onboard diagnostics system indicating a small leak in the Evaporative Emission Control System.

This system is crucial for reducing the car’s emissions and preventing fuel vapors from escaping into the atmosphere. Detecting a small leak can be challenging, akin to finding a needle in a haystack, but with the right approach, it’s entirely feasible.

Tools You May Need Before we start our diagnostic, ensure you have the following tools at hand:

Digital multimeter https://amzn.to/3xmgEmS

Vacuum pump https://amzn.to/49o5trg

The smoke machine I use for EVAP testing https://amzn.to/43TKIlZ

Visual Inspection: Conduct a thorough visual inspection of the EVAP system. Look for obvious signs of damage, such as cracked hoses or loose connections. Smoke Test: Utilize a smoke machine to introduce smoke into the EVAP system. The smoke will exit through the leak, revealing its location. This step is crucial for pinpointing the exact source of the leak.

If no leaks are found you may need to replace Defective Parts: Bad parts could range from a gas cap to more complex parts like the purge valve, vent valve, or the EVAP canister. In this case, we had a bad EVAP purge valve After the repair, clear the P0442 code from your vehicle’s computer system using an OBD-II scanner and if you check, the engine light says out for over 100 miles – congratulations, your problem is fixed

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Automotive Repair Videos Check Engine Light DIY Auto Repair

P1101 Chevy Cruze and Malibu- Fix!

Understanding the P1101 Code

The P1101 code primarily indicates a problem with the Mass Airflow (MAF) sensor in Chevy Cruze and Malibu models. This sensor plays a crucial role in measuring the volume of air entering the engine, which is essential for maintaining the correct air-fuel ratio. A fault in the MAF sensor can lead to inefficiencies in engine performance, including reduced power output, decreased fuel efficiency, and potential stalling or starting issues.

Diagnostic and Repair Guide

  1. PCV Valve and Mass Airflow System Inspection: Begin by inspecting the PCV valve for any signs of faultiness. A rattling sound from the valve upon shaking indicates it needs replacement. For the MAF sensor, use an OBD-II scanner to check for proper voltage readings. Abnormal readings suggest the sensor needs replacement.
  2. Oxygen Sensor Check: A faulty oxygen sensor might contribute to the P1101 code by storing additional trouble codes. Replace any malfunctioning sensors to avoid exacerbating the issue.
  3. Air Filter and Throttle Body: Inspect the air filter for any blockages that could restrict airflow to the engine. A dirty throttle body can also impede airflow, necessitating cleaning or replacement if it’s contributing to the P1101 code.
  4. Vacuum Leak Identification: Vacuum leaks in the engine can disrupt the air-fuel mixture, leading to the P1101 code. Utilize a smoke machine to detect leaks in the intake manifold or any part of the air intake system. Smoke emanating from any component indicates a leak that must be repaired.
  5. Inspecting the Intake Hose: Damage or leaks in the intake hose can lead to issues similar to those caused by vacuum leaks, as they can allow unmeasured air into the engine, disrupting the air-fuel balance.

Preventive Maintenance Tips

  • Regularly inspect and clean the MAF sensor and replace the air filter as needed to prevent blockages.
  • Inspect hoses and connections within the air intake system for signs of wear or damage and replace as necessary to prevent future vacuum leaks.

Now, let’s explore the steps you can take to resolve the P1101 code and get your Chevy Cruze or Malibu back on track:

  1. Inspect MAF Sensor Connections: Begin by inspecting the connections to the MAF sensor. Ensure that the electrical connector is securely attached and that there are no visible signs of damage or corrosion.
  2. Clean MAF Sensor: Over time, the MAF sensor can accumulate dirt, oil, or other contaminants, affecting its performance. Use a specialized MAF sensor cleaner to carefully clean the sensor. Be gentle to avoid damaging delicate components.
  3. Check Air Filter: A clogged or dirty air filter can also cause issues with airflow, leading to MAF sensor problems. Inspect the air filter and replace it if necessary.
  4. Inspect for Vacuum Leaks: Vacuum leaks can disrupt the airflow and lead to irregular MAF sensor readings. Perform a thorough inspection of the vacuum lines and connections, repairing any leaks you find.
  5. Reset ECM: After completing the above steps, reset the ECM to clear the trouble code. You can do this by disconnecting the battery for a few minutes or using a diagnostic tool.
  6. Monitor Performance: Once you’ve addressed the potential causes of the P1101 code, monitor your vehicle’s performance. If the check engine light remains off and the engine operates smoothly, you’ve likely resolved the issue.

Professional Assistance:

If you’re uncomfortable performing these steps yourself or if the issue persists after attempting the fixes, it’s advisable to seek assistance from a qualified mechanic or dealership. They have the expertise and diagnostic tools necessary to accurately diagnose and address the problem.

Conclusion:

Encountering the P1101 trouble code on your Chevy Cruze or Malibu can be concerning, but it’s not an insurmountable obstacle. By following the steps outlined above, you can effectively diagnose and resolve the issue, restoring your vehicle’s performance and efficiency. Remember, regular maintenance and prompt attention to warning signs are key to keeping your vehicle running smoothly for years to come.

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Check Engine Light DIY Auto Repair

Code P0705 on Nissan Versa Transmission Range Sensor “Not what You Think”

🚗 Troubleshooting Code P0705 on Nissan Versa | Transmission Range Sensor Is your Nissan Versa setting the P0705 trouble code, and you’re not sure what it means or how to fix it? In this video, we’ll walk you through the found and potential solutions for the P0705 code related to the Transmission Range Sensor (TRS) on your Nissan Versa. this fix is not what you would think. Easy fix!! Get cheap replacement tail light assembly for your Versa on amazon here: https://amzn.to/4a1NzLn

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Automotive Repair Videos Blog Check Engine Light Chevy Repair DIY Auto Repair

P1101 Air Flow Volume Chevy Malibu “Help Needed”

All right flat rate mechanic here again and we’re diagnosing a p1101 for airflow volume on this Chevy Malibu which seems to be a pretty common problem. The customer came in and they had already replaced the mass airflow sensor one of my techs diagnosed it and we ended up cleaning the throttle body and putting in a map sensor. The check engine light still came back on so I’m gonna kind to go through what I found and how to check these first. What you really need to do if you’re trying to fix p1101 for the airflow is you’re going to need to smoke the actual boost side of this intake system so basically you’re going to have to block off where the air comes in here and lock it off here and you’re going to want to check for leaks through this uh through the turbo through the intercooler and see if you got any leaks on that air charge side of this whole system there’s any leaks whatsoever it’s going to cause that p1101

we did smoke that we took it up here we actually smoked it through here blocked this off we didn’t find any leaks so that all checked out good and we’ve replaced both the booth sensor and the mass airflow sensor or the map sensor sorry the only sensor we haven’t done is a boost sensor but thus far that seems to check out our right but I’m going to show you what we found um I do have this little deal here wants us to check some some of the perimeters on the scan tool which I have up right now we got our boost pressure sensor fuel trim manifold pressure and mass airflow so um and on here one of the first things it wants you to do is uh we want you to basically compare your boost pressure sensor to your Maps sensor pressure so we can go ahead and do that and you’re going to want to do that with the engine off so we’ll go ahead and shut the engine off and we’ll go to English here so we’ve got pounds and you can see where uh relatively close to win range we got 13.5 and 14.1 so I would consider that acceptable so now we’ll go ahead and start it the next thing he wants us to do is check the mass airflow sensor we should have approximately three grams per second at idle so we’re going to go ahead and check that next we’re going to go ahead and start it up and we’ll change our scan tool to metric so we can read grams per second and looks like we’re at about 2.8 and now this is a new Point 2.4 actually so this is a new mass airflow sensor our idle uh seems like we are idling very low we did do a throttle body cleaning Subscribe to my youtube channel here: https://goo.gl/j1pCfn

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The Flat Rate Mechanic. 26-year ASE Master Automotive Technician and Advanced level ASE certified here to help you save money on your automotive repairs The Flat Rate Mechanic is a participant in the Amazon Influencer Program. Disclaimer: Due to factors beyond the control of The Flat Rate Mechanic, it cannot guarantee against unauthorized modifications of this information or improper use of this information. The Flat Rate Mechanic assumes no liability for property damage or injury incurred as a result of any of the information contained in this automotive repair video. The Flat Rate Mechanic recommends safe practices when working on cars or trucks with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this repair video. Due to factors beyond the control of The Flat Rate Mechanic, no information contained in this automotive repair video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or the information contained.

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Blog Check Engine Light DIY Auto Repair

P0171 and P0174 System Running Lean Bank 1 and Bank 2 “Checking Fuel Trims”

How to fix P0171 and P0174 System Running Lean Bank 1 and Bank 2 If you’re experiencing P0171 and P0174 system running lean, check for “fuel trims” in your bank 1 and bank 2. This video will show you how to diagnose and fix the issue using a simple scan tool. In this video, we’ll show you how to diagnose and fix the issue using a simple scan tool.

If you’re experiencing P0171 and P0174 system running lean, make sure to check for “fuel trims” in your bank 1 and bank 2. This will help to fix the issue and get your engine running smoothly again! if your car is setting lean obd code at idle it is most likely a vacuum leak. if it is running lean off idle you will need to look at other things like the mass air flow sensor for your problem