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P0170 Diagnostic Trouble Code Discussion for May 2012

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 bank 1. We have performed aging tests of oxygen sensors, B1S1 fails, B1S2 passes. The Lambda reading at 1.2-1.4v at idle is our question. What should Lambda reading be at idle? Like I said, we have read the posts & can see that there are several items that may cau...
May 01, 2012