At 59,400 kms my check engine light came on. Dealer checked and found codes p0301 (#1 misfire) p0305 (#5 misfire) p0300 (random misfire). Dealer cleared codes and checked all fuel trim parameters with HDS and everything is ok. Road tested and everything was good. Suggested intermittent failure
At 61,510 kms CEL came on again. Dealer checked and found 1 DTC-p0325 knock sensor 1 no signal. Dealer inspected circuit as per svc manual, no faults found. Checked freeze frame data for abnormal conditions and all parameters looked ok. Set at 50kmh/3284RPM. Fuel trim OK, O2 sensor values good. Fuel level 44%. Cleared code, ran vehicle to operating temp and ran check as per svc manual with no knock sensor faults present. Advised this is an intermittent fault and all OPs ok. Also during diagnosis checked for misfires and no misfires present.
At 62000 kms CEL came on again and stayed on for a day and then went off for no apparent reason. Stayed off for a day and is now back on again. Each diagnostic is costing me $122 so I am looking for suggestions. Car continues to run just fine. Have done the gas cap thing and switched service stations. Any help would be appreciated.
Wednesday, October 24th, 2007 AT 9:25 PM