After driving this evening, I had some trouble codes come up. I have never had a code 15 or a code 41. Sounds like there are several different things it could be for the code 41. The code 15 is coolant temp sensor voltage too high. What would cause this?? thanks guys for any input.

 

15 is for a CTS that has failed, is disconnected, or otherwise has an open circuit.

41 is for an open circuit in the EST system. Have you disconnected the EST to set your timing lately?

 

thank for replying, i got both codes fixed i believe. I replaced the cts sensor about 2 years ago, and i think where the wires were spliced together it had a bad connection. Fixed them properly, and no 15 code. As far as the code 41, yes i had adjusted the timing with the 4 wire connector unplugged, i think what happened is when i disconnected the battery to clear the bad codes, i only undid the + side, and not the - side. I disconnected both this time and it seemed to clear the code, and no new one came back. Thanks again!