Category: Check Engine Light

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Automotive Repair Videos Check Engine Light Chevy Repair DIY Auto Repair

GMC Chevy P0332 P0327 Knock Sensor Circuit Low Input “TSB”

GMC Chevy P0332 P0327 Knock Sensor Circuit Low Input
GMC Chevy P0332 P0327 Knock Sensor Circuit Low Input

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Troubleshooting Knock Sensor Codes P0332 and P0327 on a Chevrolet Truck

If you’re working on a Chevrolet truck and you’ve encountered diagnostic trouble codes P0332 and P0327, there’s a good chance you’re dealing with a problem related to the knock sensors. These sensors are responsible for detecting engine knock or detonation and sending signals to the engine control module (ECM) so that the ignition timing can be adjusted accordingly. In this article, we’ll explain what can cause these codes to set, what the repair entails, and what the service bulletin is recommending to prevent future failures of the knock sensors.

What Causes Knock Sensor Codes P0332 and P0327 to Set?

There are several reasons why the knock sensors on a Chevrolet truck may fail, but the most common cause is a problem with the wiring or connections. Over time, the wires that connect the knock sensors to the ECM can become corroded or damaged, which can cause the resistance in the circuit to change. This can cause the ECM to receive incorrect signals from the sensors, resulting in the engine running poorly or setting diagnostic trouble codes.

Another common cause of knock sensor failure is a problem with the sensors themselves. The sensors can become damaged or worn out over time, which can cause them to lose their ability to detect engine knock. This can also result in the ECM receiving incorrect signals and setting diagnostic trouble codes.

What Does the Repair Entail?

The repair for knock sensor codes P0332 and P0327 will vary depending on the specific problem you’re dealing with. However, in most cases, the first step will be to disconnect the blue powertrain control module (PCM) connector and check the resistance value on the light blue wire at pin 11 for sensor two and the dark blue wire at pin 51. Both should be on the blue PCM connector, and the value should be between 93K and 107K ohms.

If the resistance is low, the next step will be to check the circuit for a shorted wire or a shorted sensor. This typically involves checking the wires for damage or corrosion and testing the sensors for continuity.

If the resistance is high, the next step will be to check for a corroded wire or a poor connection at the knock sensor. This will typically involve checking the wires for damage or corrosion and inspecting the connections for signs of wear or damage.

The next step is to use an AC voltmeter and check the Hz on each wire listed above while tapping on the engine block. You should be careful not to tap on any plastic engine components. While tapping on the block, the frequency on the meter should go over 125 hz.

Finally, if the problem is a faulty sensor or damaged wiring, the repair will typically involve replacing the knock sensors and/or repairing the damaged wiring.

What Does the Service Bulletin Recommend to Prevent Future Failures?

The service bulletin for knock sensor codes P0332 and P0327 recommends that technicians use a specifically designed harness with the knock sensors. This harness is designed to provide a secure and reliable connection between the sensors and the ECM, which can help to prevent problems with resistance and continuity.

In addition to using the correct harness, the service bulletin recommends that technicians use dielectric grease on the connectors to help prevent corrosion and damage. This grease can help to protect the connectors from the elements and prevent damage from moisture, dust, and other contaminants.

Average Reported Mileage: 338036
Tests/Procedures: 1. Disconnect the Blue Powertrain Control Module (PCM) connector and check the resistance value on the Light Blue wire at pin 11 for sensor two and the Dark Blue wire at pin 51. Both of these should be on the Blue PCM connector. The value should be 93K to 107K ohms.

2. If resistance is low, check the circuit for shorted wire or shorted sensor.

3. If resistance is high, check for corroded wire or poor connection at the knock sensor.

4. Use an AC voltmeter and check the Hz on each wire listed above while tapping on the engine block.

5. While tapping on the block, the frequency on the meter should go over 125 hz.

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Automotive Repair Videos Check Engine Light DIY Auto Repair

P0141 P0161 O2 Sensor Heater Circuit “Chevy Truck 5.3L 6.0L”

P0141 P0161 O2 Sensor Heater Circuit
P0141 P0161 O2 Sensor Heater Circuit

Diagnose check engine. Found light stored code p0141 for O2 sensor heater circuit bank 1 sensor 2. Drivers side after the catalytic converter.

Checked both fuses and the under hood fuse compartment for the O2 sensor heaters and both checked good. Accessed bank 2 O2 sensor after the cat and found 02 sensor wiring had been rubbing on front drive shaft on the O2 sensor side. Checked the vehicle side for power to O2 sensor heater and tested good. O2 sensor will need to be replaced due to wiring damage on this Chevy Silverado.

2004 Express 1500 5.3
2004 Silverado 2500 HD 6.0
2004 Silverado 3500 6.0
2004 Sierra 1500 5.3
2004 Sierra 2500 HD 6.0
Customer Concern: Setting trouble codes P0141 and P0161.
Average Reported Mileage: 106957
Tests/Procedures: 1. With a cold engine, turn the key on engine off and monitor O2 voltage. Within 2 minutes, the voltage should drop to about 150 mV.

2. Verify there is 12 volts on the Pink wires to both O2’s. If no voltage check the O2B fuse for blown.

3. If the fuse is blown check wiring to the sensor for chafing on the transmission or transfer case.
Tech Tips: Heater Current Test
• The PCM detects that the affected HO2S Heater current parameter is more than 1.375 amps or less than 0.25 amps.
• The above condition is met for 10 seconds.
Heater Resistance Test

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Automotive Repair Videos Check Engine Light DIY Auto Repair

VW Code P0171 P119A P0300 2.0l “Most Common Problem”

VW Code P0171 P119A P0300 2.0l
VW Code P0171 P119A P0300 2.0l

Diagnosed check engine light found storage code P0171 system lean bank 1 also found stored code p1193 a for fuel pressure sensor malfunction. I first verified system was actually running lean by checking fuel trim values on the scan tool and did find that vehicle is adding a substantial amount of fuel to compensate for the lean condition.

Continue diagnostic buy smoking intake system and crankcase for vacuum leaks. Found large amounts of smoke exiting between the transmission and the engine indicating rear main seal
https://amzn.to/2QHnKIU has failed and will need to be replaced. Also, the crankcase pressure regulating valve https://amzn.to/2NkmUUm on top of the valve cover will need to be replaced at the same time. After doing some research also found out that P119A typically falsely sets when a lean condition is present.

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Vehicle Application:
2009 CC 2.0
2009 Jetta 2.0
2009 Passat 2.0
2010 Passat CC 2.0
2009 Tiguan 2.0
Customer Concern: The engine runs rough and has fault codes P119A and a P0171.
Average Reported Mileage: 93849
Tests/Procedures: 1. This fuel pressure fault code may be caused by a lean condition. The fuel pressure is tested by utilizing a special tool and comparing that value to data block 230 in engine electronics with a compatible scan tool.
Clear all fault codes before testing the fuel pressure to ensure the vehicle is not in power limitation mode.

2. If the sensor is reading erroneously, verify that the sensor has proper reference voltage and ground. Pin 3 Black/Gray is 5 volts and pin 1 Brown is ground. The center wire is signal voltage output to the ECM.

3. There is no specification for voltage values, but lower voltage indicates low pressure and higher voltage indicates high pressure. If the ECM reads nothing or a fixed value, check for a broken signal wire.

4. Once the correct fuel pressure is being displayed, let the car idle for ten minutes. Then test drive the car and evaluate block 032 in the ECM with a scan tool. The first value is idle fuel trim, the second value is part throttle fuel trim. The maximum value before fault detection is +or- 10%. If the values are +5% or more, a lean condition exists. Inspect the intake system for leaks, smoke testing the system with pressure is the preferred method.

5. If no external leaks are found, try blocking off the vacuum supply to the crankcase ventilation system. If the idle cleans up or block 032 idle fuel trim starts to drop, either a false air leak into the system is present or the regulating valve has failed.

6. There have been many cases of leaking rear main seals that create a false air leak. Remove the dipstick and smoke test the crankcase, if smoke comes out of the transmission bell housing the seal is leaking.
Tech Tips: A failed crankcase pressure regulating valve can allow boost pressure to enter the crankcase and force the rear main seal to dislodge.

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#P0171 #P0119A #P0300

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Automotive Repair Videos Check Engine Light DIY Auto Repair Wi-Tech Software

p2010 p0032 p0647 Dodge Caliber Patriot “Bad Ground

p2010 p0032 p0647 Dodge Caliber Patriot
p2010 p0032 p0647 Dodge Caliber Patriot

In this video, I find a common ground wire that was broken or had a bad connection and was able to repair it and it took care of all the diagnostic trouble codes on this dodge Patriot.

2007 Caliber 2.0
2008 Caliber 2.0
2007 Caliber 2.4
2007 Patriot 2.4
Customer Concern: Trouble codes P0647, P2010 and P0032 are setting. The Air Conditioning (A/C) does not work.
Average Reported Mileage: 120075
Tests/Procedures: 1. These circuits share a common ground. If the ground is missing/poor, circuit high trouble codes will set.

2. Inspect the Z916 ground circuit (Black or Black/White wire) to the G110 ground. G110 ground is located on the right frame rail just ahead or below the washer reservoir. If the ground is poor/missing, add a redundant ground using a jumper wire and test for further problems.

Diagnostic Codes
#P0032
#P0647
#P2010
Potential Causes

With Service Manual diagrams, components, TSBs, and R&R procedures
G110 Ground
Z916 Ground Wiring
Confirmed Fix Summary

Confirmed Fix

With Service Manual diagrams, components, TSBs, and R&R procedures
12 – Bypassed/Repaired/Connected c100 Ground Wiring
4 – Repaired G110 Ground
1 – Cleaned G110 Ground and Repaired Z916 Ground Wiring

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Automotive Repair Videos Check Engine Light DIY Auto Repair

How to diagnose a cylinder misfire in your car. Check engine light P0300

How to diagnose a cylinder misfire in your car. Check engine light P0300
How to diagnose a cylinder misfire in your car. Check engine light P0300

In this video will be diagnosing a cylinder misfire on a Cadillac DeVille 4.6 L Northstar motor. I will show you how to identify which cylinder is misfiring if you have a random cylinder misfire P0300 and once you find out what cylinder is misfiring I will also show you how to find out what’s causing the misfire.

Will be swapping spark plugs will be swapping ignition coils and watching the misfire graph on the scan tool to see if the misfire Falls the ignition coil or spark plugs. Also, show you how to pull fuel injectors with the GM Factory scan tool.

Hope this video was helpful if it was be sure to hit the Thumbs Up Button And subscribe to my channel thanks for watching

#P0300 #CadillacDeville #P0308

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Automotive Repair Videos Check Engine Light

GMC Chevy 3.6L P0008 P0009 P0016 P0017 P0018 P0019 ” Extended Warranty”

p0008 p0017 3.6l Extended Warranty
p0008 p0017 3.6l Extended Warranty

In this video, I will go over diagnostic trouble codes that are very common to the GM and Chevy 3.6 l V6 engine. They’re all timing related codes and the most common cause for it is a timing chain to stretch over time or for the timing chain tensioners to go bad.

In some instances, these codes can also be caused by low or dirty oil or a plugged or failed valve timing solenoid when should be always be checked first.

GM has extended the warranty on their timing chains to 120000 Miles and 10 years.

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Vehicle Application:
2005 Allure 3.6
2006 Allure 3.6
2007 Allure 3.6
2008 Allure 3.6
2010 LaCrosse 3.0
2010 LaCrosse 3.6
2011 LaCrosse 3.6
2012 LaCrosse 3.6
2013 LaCrosse 3.6
2014 LaCrosse 3.6
2014 Camaro 3.6
2010 Equinox 3.0
2011 Equinox 3.0
2012 Equinox 3.0
2008 Equinox 3.6
2009 Equinox 3.6
2010 Equinox 3.6
2011 Equinox 3.6
2012 Equinox 3.6
2013 Equinox 3.6

Customer Concern: Engine Control Module (ECM) DTC P0008, P0009, P0016, P0017, P0018, P0019 The engine has a surging, fluctuating idle. All 6 DTCs reset at the same time.
Average Reported Mileage: 89737
Tests/Procedures: 1. Remove the Crankshaft Position (CKP) Sensor.

2. Using a boroscope, inspect the crankshaft reluctor.

3. Refer to pictures in PIP3423C for illustrations for the position of the reluctor vs the counterweights.

4. If a boroscope is not available, removal of the oil pan will be required.

5. If the crankshaft is OK, check the timing chains.

6. Refer to GM 11340C, Special Policy that will warranty the timing chain for 10 years or 120,000 miles.
Tech Tips: Refer to GM PIP3423C; for 2007 Buick and Cadillac refer to 07-06-01-013B; for 2007 GMC, Pontiac and Saturn refer to 07-06-01-014.

TSBs

07-06-01-013b

11340C

PIP3423C
Diagnostic Codes

#P0008

P0009

P0016

#P0017

#P0018

P0019
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P0455 Large EVAP Leak Explained “No Smoke”

P0455 Large EVAP Leak Explained
P0455 Large EVAP Leak Explained

In this video, I go into detail on why a p0445 large evap system leak sets and hoe the gas vapor system works and why it will set a p0455.

There are a number of different reasons that could cause a p0455 and the #1 reason being the evap vent valve and they are pretty easy to test. In this video, I will be testing the vent valve and the
evap purge valve with a power probe http://amzn.to/2FN2r70

I will active them with the power probe then blow into them to make sure they are sealing properly. And if they don’t that will be the cause of your large EVAP leak. The vent valve is very common and I hope this video helps a few people save a little money on their auto repair bills. Thanks for watching the Fate Rate Mechanic.

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Automotive Repair Videos Check Engine Light Honda Tech Tips

How to Fill your Transmission Fluid Honda Odyssey “Slipping Fixed”

How to Fill your Transmission Fluid Honda Odyssey
How to Fill your Transmission Fluid Honda Odyssey

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DTC P0741: Torque Converter Clutch Hydraulic Circuit Stuck OFF

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF through a strainer. Inspect the strainer for metal debris or excessive clutch material.
Does the strainer have metal debris or excessive clutch material?
YES – Replace the transmission.
NO – Replace the ATF, then go to step 4.

4. Turn the ignition switch ON (II).
5. Clear the DTC with the HDS.
6. Choose Lockup Solenoid Test in Miscellaneous Test Menu, and check that the torque converter clutch solenoid valve operates with the HDS.
Is a clicking sound heard?
YES – Go to step 7.
NO – Replace the torque converter clutch solenoid valve, then go to step 11.

7. Choose Clutch Pressure Control (Linear) Solenoid C in Miscellaneous Test Menu, and test A/T clutch pressure control solenoid valve C with the HDS.
Is the result NORMAL?
YES – Go to step 8.
NO – Follow the instructions indicated on the HDS by the test result, but the tester has not determined the cause of the failure, go to step 11. If any part was replaced, go to step 12.

8. Run the engine until the ECT SENSOR value reaches 176°F (80°C).
9. Test-drive the vehicle at 55 mph (88 km/h) for 2 minutes while monitoring the vehicle speed with the HDS.
10. Monitor the OBD STATUS for P0741 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES – Repair faulty torque converter clutch mechanism, torque converter clutch hydraulic circuit, lock-up shift valve, or the lock-up control valve, or replace the transmission.
NO – Intermittent failure, the system is OK at this time. If the screen indicates NOT COMPLETED, go to step 9.

11. Inspect A/T clutch pressure control solenoid valve C.
Does A/T clutch pressure control solenoid valve C work properly?
YES – Repair the hydraulic system related with the lock-up shift valve, the lock-up control valve, and the lock-up timing valve, or replace the transmission, then go to step 12.
NO – Replace the A/T clutch pressure control solenoid valve C, then go to step 12.

12. Turn the ignition switch ON (II).
13. Clear the DTC with the HDS.
14. Test-drive the vehicle for several minutes under the same conditions as those indicated by the freeze data.
15. Check for DTCs with the HDS.
Is DTC P0741 indicated?
YES – Go to step 7.
NO – Go to step 16.

16. Monitor the OBD STATUS for P0741 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES – Troubleshooting is complete. If any other DTCs were indicated in step 15, go to the indicated DTC’s troubleshooting.
NO – If the screen indicates FAILED, go to step 7. If the screen indicates NOT COMPLETED, go to step 14.

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Automotive Repair Videos Check Engine Light Honda Tech Tips

What A blinking D or Flashing Drive light Means

Honda Flashing D
Honda Flashing D

Okay in this video I will explain what a flashing d means on your shift indicator and what you should do to fix it.

If you have a flashing D on your shift indicator that typically means you have a transmission problem and you will need to get it scanned for diagnostic trouble codes.

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Depending on what transmission codes you have stored will determine your next course of action. Feel free to list what codes you have in your Honda in the comments below.

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Automotive Coolant System Diagnostic Automotive Repair Videos Check Engine Light

P0128 Coolant Temp Below Thermostat Regulating Temp

P0128 Coolant Temp Below Thermostat Regulating Temp
P0128 Coolant Temp Below Thermostat Regulating Temp

Vehicle Application:
2001 Accord 2.3
Customer Concern: The check engine light is on with a code P0128 for cooling system performance problem.
Average Reported Mileage: 106000
Tests/Procedures: 1. Verify the thermostat is operating correctly, the Engine Control Module (ECM) determines actual engine coolant temperature by the run time of the engine and is watching the Engine Coolant Temperature (ECT) sensor to determine if the engine is warming up fast enough.

2. If the ECT sensor and thermostat is functioning correctly, then follow Honda TSB # 01-064 for a updated ECM for this code.
Tech Tips: If someone starts the vehicle and has the heat on high on a cold day the engine will take longer to warm up and the code may set. I believe the ECM software was revised so it does not expect the engine to warm up as fast.

Tests/Procedures: 1. Let the vehicle get cold and use a scan tool and verify the initial engine coolant temperature is between 20 and 95 degrees F and the initial intake air temperature is also between 20 and 95 degrees F. The difference between initial engine coolant temperature and initial intake air temperature should be a maximum of 3 degrees. Intake air temperature 2 seconds after starting the engine must be nearly equal to initial intake air temperature. Then start the engine and let it idle. Drive the vehicle at a speed between 25 – 55 mph (40 – 88 km/h) for at least 10 minutes.
. If you have difficulty duplicating the DTC, retest after turning off electrical components such as the audio system and A/C,
and try a different gear position.
. Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

2. Verify the engine is getting warmed up (above 158 degrees F) in a reasonable amount of time. Given the drive cycle to see if the code resets, look for the engine temperature to reach the estimated engine coolant temperature of about 172 degrees in about 10 minutes of driving.

3. Feel if the lower radiator hose is getting hot indicating the thermostat opened and that there is circulation in the cooling system.
Tech Tips: If the actual engine coolant temperature is below the estimated engine coolant temperature (as estimated by the ECM), a malfunction in the thermostat valve is detected and a DTC P0128 is stored. Malfunction Threshold
. The ECT sensor output is 158ºF (70ºC) or less, and an estimated engine coolant temperature is 172ºF (78ºC) or more.
. The difference between the estimated engine coolant temperature and the ECT sensor output is 27ºF (15ºC) or more.
The TSB for an updated ECM is for 2000-2001 models only.

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