2003 Volkswagen TDI Codes

2003 VOLKSWAGEN JETTA TDI
155,000 MILES • 4 CYL • FWD • MANUAL
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VWMAN25130
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I have a 03 Jetta TDI and it keeps turning the check engine lt on. The code is P0128. What is the fix for this
Aug 31, 2009 at 6:32 AM
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DR LOOT
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I am looking at the manual, but I do not see a code P0128, are you sure you have that correctly?I do have a P0228 which is the throttle positioning sensor, double checked the code and get back to me.
Sep 20, 2009 at 11:20 PM
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TDI-CANOLA-POWER
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p0128 code is "coolant thermostat/valve temperature below control range" ... you might want to get your thermostat checked.

dave
Sep 27, 2009 at 5:35 PM