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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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Automotive Repair Videos DIY Auto Repair How To

How to Fix P0101 Mass or Volume Air Flow “Nissan Altima” Mass Air Flow Sensor Fixed

In this video, I will show you how to fix p0101 mass air flow sensor circuit. We’re working on a 2011 Nissan Altima and in this video, I just wanted to go over a few things we found. First, we tried cleaning the mass air flow sensor which in a lot of cases can help and is always a good thing to try before replacing the mass air flow sensor.

If you need to know how to clean the mass air flow sensor they do sell mass air flow sensor cleaner here https://amzn.to/3yef3wP . Sometimes just this alone will fix a p0101 On this vehicle, we actually had to replace the mass air flow sensor and also there’s a service bulletin that states a computer should be updated with new software to prevent this problem from happening. We deliver all this information in this video about Nissan’s mass air flow problems.

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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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Automotive Repair Videos Blog Check Engine Light DIY Auto Repair

Most Common Cause of a P0101 “Mass Air Flow (MAF) Circuit/Performance Malfunction”

Most common cause of a p0101 “Mass Air Flow (MAF) Circuit/Performance Malfunction”?
Code P0101 Definition
Mass Air Flow (MAF) Circuit/Performance Malfunction

Mass air flow sensor cleaner: https://amzn.to/2F9dQht

Code P0101 Meaning
The mass air flow (MAF) sensor measures the amount of air entering the engine. Check engine light code P0101 is set when the measurement of air entering the engine by the mass air flow sensor is outside of the manufacturer’s specified range.

Symptoms
Engine stalling
Difficulty starting
Lack of power
Rough idle
Causes
Dirty, obstructed, or faulty mass air flow sensor
Damaged or disconnected air intake boot (snorkel)
Vacuum leak
Clogged or improperly installed the air filter
Clogged catalytic converter / restricted exhaust

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