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P0170 Diagnostic Trouble Code Discussion for October 2007

Fuel Trim Lean Or Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0170
Help Request Posted
2001 Volkswagen Beetle GLX 1.8L MIL Lamp on VIN: 3VWDD21C31
P0170: Fuel Trim. Thanks in advance. This 1.8 Ltr has a P0170 Fuel trim I cant get rid of. It returns within 50 miles. I have replaced the air mass sensor, fuel pressure regulator, cleaned the throttle body and have smoked out the engine for any vacuum leaks. Does anybody have ...
October 22, 2007