I'm pulling a P1285 code, cylinder head overtemp condition. I'm also failing individual tests: 2A , 2B, 45, and 56. Would these failed individual tests relate to a bad sensor, open/shorted harness, a poor connection, or an overheated engine? During a drive cycle for IM readiness, the scanner said 177-198 degree ECT, so I'm not seeing an overheated engine. I just bought the car, it's past due for emission testing. So far, I've found the wrong spark plugs had been installed, a bad FDPM, a bad purge canister valve, and a leak at the fuel tank fill neck gasket. I appreciate any advice on this matter and can you tell me where the cylinder head sensor is located? Thx! Rick Rawlins
Try to replace the sensor first
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