I would like to know what this codes mean I have 1997 it seems that my volts seem to run in the 11.5 to 12.4 when I drive but when I start the car it is at 13.4 any advise thanks.

 

P1518 PCM to TAC Module Serial Data Circuit -
P1571 ASR Desired Torque -C
C1278 TCS Temporarily Inhibited by PCM


Now...What they mean???? I have no idea.

...GeorgeC

 

http://www.obdii.com/codes.asp

Try this link. You can find the codes here.

 

I also do not know what your three codes mean but I will respond to keep the thread alive. Are your codes History or Current, H or C? History codes often are of little use in diagnosing a problem.

 

The first code is p1518 C H the next is p1571 H and c1278 C I have Cartek H/C the car runs good but the reduce engine came up on DIC I cut the car off and it drove fine cleared codes and hasn't come up all night while I was out I think I need to take it to the dealer.Can't have the vette on the side of the road.

 

The 1518 means that you have a fault related to the "drive by wire" and thats why the "reduced power" mode comes on...Possible causes are a faulty TAC module,accelerator APP sensor,or TAC motor,or related connections...The 1278 simply means that the ABS traction control was inhibited (shut down) while the PCM fault was detected...

 

Thanks C5-Tech what do you think it would cost to fix.

 

C-5 TECH comes to the rescue again!

 

Here is a TSB for an updated TAC module to address your concern :yesnod: The GM site was down before ;) Read on,the module is about $200 bucks...

--------------------------------------------------------------------------------

REDUCED ENG. POW. MESSAGE ALONG W/ PARTIC. PWRTRAIN #87-65-16


SUBJECT: REDUCED ENGINE POWER MESSAGE ALONG WITH PARTICULAR POWERTRAIN TROUBLE CODES (INSTALL NEW TAC-MODULE IF STRATEGY IN SERVICE MANUAL FAILS)

MODELS: 1997-98 CHEVROLET CORVETTE WITH 5.7L V8 ENGINE (VIN G - RPO LS1)

CONDITION #1: INTERMITTENT REDUCED ENGINE POWER EVENT, ACCOMPANIED BY P-1516, OR P1518 TROUBLE CODES.

IF A SITUATION ARISES WHERE A P-1516 TROUBLE CODE IS ACCOMPANIED BY A

P-1120 AND/OR P-1220 TROUBLE CODE, THIS SERVICE BULLETIN DOES NOT ----------------------------------------------------------------- APPLY. IN THESE CASES THE TECHNICIAN MUST USE THE NORMAL STRATEGY ------------------------------------------------------------------ BASED DIAGNOSTIC. -----------------

CONDITION #2: INTERMITTENT REDUCED ENGINE POWER ACCOMPANIED BY TROUBLE CODE P-1125 AND ANY OF THE FOLLOWING TROUBLE CODES:

P-1276 P-1281 P-1286

CAUSE:

CONDITION MAY BE DUE TO DIAGNOSTIC SOFTWARE AND CALIBRATION IN THE TAC-MODULE WERE NOT OPTIMALLY UTILIZED.

CORRECTION:

IF THE ABOVE CONDITIONS CANNOT BE CORRECTED USING THE NORMAL STRATEGY BASED DIAGNOSTICS LISTED IN THE SERVICE MANUAL, INSTALL THE NEW TAC- MODULE LISTED BELOW.

PART INFORMATION:

NEW TAC-MODULE PART # 25319443

PARTS ARE EXPECTED TO BE AVAILABLE ON APRIL 6, 1998 FROM GMSPO.

 

Think you C5-Tech glad you are on the forum. :yesnod: