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P0128 Diagnostic Trouble Code Discussion for May 2015

Thermostat System Malfunction

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Trouble Ticket Help Requests for DTC P0128
Help Request Posted
2002 Bentley Arnage RL 6.7L Excessive Emissions, Poor Idle Quality, Misfire VIN: SCBLC31E72
P0128: coolant thermostat. ... dealership for emission testing.Doing the diagnostics on it find that the gas cap is missing (code p0455) number 1 cyl will just stop firing.Shut the car off and then start it up again and is running fine.Switch coils and it sti...
May 05, 2015