What do these codes mean?
Thread Starter
Pro
Joined: Jul 2008
Posts: 619
Likes: 3
From: Wheeling IL
What do these codes mean?
All I know is these codes mean the voltage to the O2 sensors are low. What exactly does this mean? Do I need new O2 sensors?
p0131
p0137
p0151
p0157
p1571 History
For the last few years my check engine light will come on every so often when I floor it. It always goes off after awhile and I never noticed a difference in the way the car drove. Now it is off and there is lag in the acceleration.
p0131
p0137
p0151
p0157
p1571 History
For the last few years my check engine light will come on every so often when I floor it. It always goes off after awhile and I never noticed a difference in the way the car drove. Now it is off and there is lag in the acceleration.
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
p0131--p0151 are for the front 02 sensors-- p0137--p0157 are for the rear 02 sensors----The rear 02 codes I wouldn't be worried about as the rear 02's only report the condition of the cats and don't affect how the engine runs--However the front codes are extremely important as the engine runs completly off the front 02's to set the fueling based on data received from them in closed loop--It would be rare to get low voltage codes on both front/rear unless you have a bad ground somewhere that affects both F/R --- OR you have blown the 02 sensor fuse which would not allow them to heat up-- Low voltage can indicate a lean condition too in closed loop ( part throttle)--
Have you recently oiled your air filter ? If so you may have overoiled it and fouled the MAF--clean it with brake-clean--If fouled it could create a lean condtion with mis-inforamtion going to the ECM--
Do you have LT headrs ?? If so it is very common to get low voltage or slow swithing codes for the due to the further back 02 bung locations ( than stock ) from the LT's
Have you ever replaced your fuel filter ?? A plugged filter will lower the fuel pressure causing a lean condition---
The p1571 is a traction control code--can be caused by several things
Most common reasons for the code is---
Incorrect tire size in the tune
dirty or fouled wheel speed sensors
dirty or broken wheel speed sensor pigtail
driving on rough roads or going over railroad tracks too fast
Have you recently oiled your air filter ? If so you may have overoiled it and fouled the MAF--clean it with brake-clean--If fouled it could create a lean condtion with mis-inforamtion going to the ECM--
Do you have LT headrs ?? If so it is very common to get low voltage or slow swithing codes for the due to the further back 02 bung locations ( than stock ) from the LT's
Have you ever replaced your fuel filter ?? A plugged filter will lower the fuel pressure causing a lean condition---
The p1571 is a traction control code--can be caused by several things
Most common reasons for the code is---
Incorrect tire size in the tune
dirty or fouled wheel speed sensors
dirty or broken wheel speed sensor pigtail
driving on rough roads or going over railroad tracks too fast
Thread Starter
Pro
Joined: Jul 2008
Posts: 619
Likes: 3
From: Wheeling IL
Thanks for the reply. Car is fine now and codes are gone. I tried to clean the ground a month ago and I couldn't get it apart. I got it off the car but couldn't get it to unclamp so I could clean it. Any ideas? pliers, tweezers, screwdriver?
Also, I have not oiled the airfilter recently(April) and I do not have headers.
Also, I have not oiled the airfilter recently(April) and I do not have headers.
