A little code interpretation and diagnostic help please !
Thread Starter
Le Mans Master
Joined: Sep 2000
Posts: 6,101
Likes: 44
From: ABQ NM
Cruise-In II Veteran
A little code interpretation and diagnostic help please !
My '02 Z06 has been intermittently displaying the AH/ABS problem (which I know has been extensively discussed here), and I've basically put off dealing with it thus far. However, yesterday I drove it and my check engine light came on, and a few miles thereafter the intermittent AH/ABS alert popped up on my DIC (because of the previous random, intermittent nature of the AH/ABS warnings appearing, I do not believe the check engine light and the AH/ABS are related - although what do I know 
).
Anyway, I pulled the codes when I got home and this is what came up. I'm hoping someone here can decode them for me and give me some notion as to what may be the cause of the "check engine light" (I know some of these codes relate to the AH/ABS relay issue):
B0-RFA U1000H
10-PCM P0171H
10-PCM P0174H
28-TCS C1214HC
28-TCS C1236H
A0-LDCM B2284H
A0-LDCM B2282H
A0-LDCM U1064H
A1-RDCM B2283H
A1-RDCM B2285H
I realize only one code is showing current (28-TCS C1214HC), which I'm assuming is the reason for the check engine light staying on even after I've cycled the ignition on and off and reset and cleared the codes.
Any help is, as always, much appreciated
).Anyway, I pulled the codes when I got home and this is what came up. I'm hoping someone here can decode them for me and give me some notion as to what may be the cause of the "check engine light" (I know some of these codes relate to the AH/ABS relay issue):
B0-RFA U1000H
10-PCM P0171H
10-PCM P0174H
28-TCS C1214HC
28-TCS C1236H
A0-LDCM B2284H
A0-LDCM B2282H
A0-LDCM U1064H
A1-RDCM B2283H
A1-RDCM B2285H
I realize only one code is showing current (28-TCS C1214HC), which I'm assuming is the reason for the check engine light staying on even after I've cycled the ignition on and off and reset and cleared the codes.
Any help is, as always, much appreciated
Burning Brakes
Joined: Jul 2006
Posts: 763
Likes: 45
From: Long Grove IL
The C1214 will not turn on the "Check Engine" light. It's an ABS code for low voltage inside the EBCM. You would get ABS / Traction / Active Handling messages in the DIC for this.
More than likely your check engine light is on for the P0171 and P0174 system too lean codes. Even though they're not "Current" they are still relevant to the PCM to turn the check engine light on. These codes appear to be somewhat common when running some aftermarket intake systems, especially with the Z06 MAF which has no screen. My '04 was doing this and it has a Vararam.
More than likely your check engine light is on for the P0171 and P0174 system too lean codes. Even though they're not "Current" they are still relevant to the PCM to turn the check engine light on. These codes appear to be somewhat common when running some aftermarket intake systems, especially with the Z06 MAF which has no screen. My '04 was doing this and it has a Vararam.
Thread Starter
Le Mans Master
Joined: Sep 2000
Posts: 6,101
Likes: 44
From: ABQ NM
Cruise-In II Veteran
Thanks to all of you who replied, and a special shout out to 8VETTE7 for his suggestions about places/things to troubleshoot 
, 'cause frankly every time I look under the hood, I scratch my head wondering where to start !
, 'cause frankly every time I look under the hood, I scratch my head wondering where to start !
