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P0128 Diagnostic Trouble Code Discussion for June 2010

Thermostat System Malfunction

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Trouble Ticket Help Requests for DTC P0128
Help Request Posted
2004 Mercedes-Benz E320 3.2L MIL Lamp on VIN: WDBUF65J24
P0128: Thermostat Below Regulating Temp. ... this mercades that is giving me fits. I have figured out the P0446 and the P0128. Alldata does not list any test for the p0452. We called them and even said they did not have and testing procedure and told us to look on th...
June 01, 2010
2003 Volkswagen Beetle GLS 1.9L Poor Idle Quality, Surge VIN: 3VWCP21C33
P0128: Coolant temp t-stat below regulating temp. This car came in for a routine timting belt replacement.at that time the car had 2 codes in computer.PO118,PO128. customer declined repairs at that time. 7-10 days later the car retured idling very poorly and still had coolant temp codes.replaced coolant temp ...
June 03, 2010