Code?
Thread Starter
Race Director
Joined: Nov 2004
Posts: 11,060
Likes: 1,263
From: Central Ma
Code?
Just confirming some code info.
I occasionally get the check engine light and whenever I check the codes its always history and some minor codes.
One right door control module, one left door, and another minor hvac code.
These trip the check engine light?
I'm assuming no big deal?
I occasionally get the check engine light and whenever I check the codes its always history and some minor codes.
One right door control module, one left door, and another minor hvac code.
These trip the check engine light?
I'm assuming no big deal?
Thread Starter
Race Director
Joined: Nov 2004
Posts: 11,060
Likes: 1,263
From: Central Ma
NONE of those sensors set the CEL. Would have to be a code listed under PCM.
Next time the CEL light comes on pull over and pull the codes BEFORE you shut off the engine. To pull codes with the engine running you must use the reset button to clear any messages from the DIC then pull codes as normal.
Some codes that appear as C or Current with the engine running will disappear when the engine is shut off and the key then turned to the on position to pull the codes.
Next time the CEL light comes on pull over and pull the codes BEFORE you shut off the engine. To pull codes with the engine running you must use the reset button to clear any messages from the DIC then pull codes as normal.
Some codes that appear as C or Current with the engine running will disappear when the engine is shut off and the key then turned to the on position to pull the codes.
Appreciate the info.
Just double checked and there were 3 pcm history codes.
101, mass air flow performance.
171, fuel trim sensor lean bank 1, 174 lean bank 2.
I have felt the slightest hesitation occasionally on acceleration.
So slight I wasn't even sure if it was just me.
What to do about these?
Thread Starter
Race Director
Joined: Nov 2004
Posts: 11,060
Likes: 1,263
From: Central Ma
If it were my car I would pick up a can of MAF cleaner and take the MAF off and clean it thoroughly and reinstall. Then clear the codes that you have and drive the car. I doubt the PCM codes will come back. JMHO
While you are in there getting the MAF off carefully check all the plenum plumbing between the MAF and the TB for cracks or other air leaks.
While you are in there getting the MAF off carefully check all the plenum plumbing between the MAF and the TB for cracks or other air leaks.
Just picked up a can of the maf cleaner.
I'll let you know in a couple of days when I get to drive it.
Thanks again.
Thread Starter
Race Director
Joined: Nov 2004
Posts: 11,060
Likes: 1,263
From: Central Ma
If it were my car I would pick up a can of MAF cleaner and take the MAF off and clean it thoroughly and reinstall. Then clear the codes that you have and drive the car. I doubt the PCM codes will come back. JMHO
While you are in there getting the MAF off carefully check all the plenum plumbing between the MAF and the TB for cracks or other air leaks.
While you are in there getting the MAF off carefully check all the plenum plumbing between the MAF and the TB for cracks or other air leaks.
Cleaned the MAF the other day and while I've only taken two short rides, it definitely feels better/no codes.
Looking forward to a longer ride this week.
Thanks for the help!
