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P0170 Diagnostic Trouble Code Discussion for November 2013

Fuel Trim Lean Or Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0170
Help Request Posted
2000 BMW 328i 2.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WBAAM5332Y
P0170: Fuel trim bank 1. This E46 is driving me crazy. The car runs perfectly when cold, it only acts up once it gets into closed loop. It has misfire codes for cylinders 1,2 & 3. The O2 sensor voltage on bank 1 remains near 0 volts when the car is acting up. It seems like a simpl...
November 07, 2013