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This past weekend I attended a corvette show. Upon returning from an hour and a half road tour in 95 degree hot and humid weather, after accelerating from a stop, my check engine light came on and I got a DIC msg of "reduced engine power". In addition I got the "check traction control" msg at the same time. Car ran like crap, definately the reduced power safety mechanism had kicked in. Luckly we had arrived back to the resort the show was being held at and I was able to get the car to the parking lot and shut it off. I let everything cool down for 30 minutes, started it back up and everything ran fine. No DIC msgs., check engine light was off. The next day I drove 2.5 hours home, no problems. So last night I finally had a chance to check the codes and here is what I got:
10-PCM
P1518H (PCM to TAC Module Serial Data Circuit)
28-TCS
C1278H (TCS Temporarily Inhibited by PCM)
Both being "history" codes. My confusion is what exactly PCM (Powertrain Control Module) to TAC Module Serial Data Circuit means. It sounds like when the P1518 code tripped for the PCM, it triggered the code for the Traction Control System so then I got the C1278 code. Any ideas? I am also assuming that since both are history codes, is seems as though everything is functioning properly now and to just keep an eye on it to see if it happens again in the future.
Wow, thanks NOT-MEE, great information, very much appreciated. Now I just need to determine if I should take it to the dealer, or just keep an eye on it since everything seems to running normal now.
Wow, thanks NOT-MEE, great information, very much appreciated. Now I just need to determine if I should take it to the dealer, or just keep an eye on it since everything seems to running normal now.
They are history codes I would reset the codes and see what happens.
They are history codes I would reset the codes and see what happens.
That is what I was thinking. I figured since they are history codes and it has run ok since, no new DIC msgs, I'd keep an eye on it to see if it happens again before I bring it to the dealer. Thanks again for the excellent information and advise!