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P0150 Diagnostic Trouble Code Discussion for September 2009

Air Fuel Sensor (Bank 2 Sensor 1) Closed Loop Performance

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Trouble Ticket Help Requests for DTC P0150
Help Request Posted
2000 BMW 323i 2.5L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: WBAAM3344Y
P0150: O2 Sensor Circuit Malfunction Bank 2 Sensor 1. I scanned the computer and bank one is like 25% and bank 2 is -25%. I smoked the engine. Found they had left off O ring at MAP sensor. Smoked again and found a couple of other small leaks and repaired them. While scanning I could see voltage for Bank 2 sensor ...
September 29, 2009