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P2189 Diagnostic Trouble Code Discussion for February 2020

Fuel Trim System Too Lean At Idle Adaptive (Bank 2)


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Trouble Ticket Help Requests for DTC P2189
Help Request Posted
2008 BMW 550i 4.8L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: WBANW53518
P2189: system too lean bank 2 29E8. This vehicle has strange intermittent lean condition, it only occurs once during drive cycle & only after sitting overnight, it only occurs when temperature is cool out. Engine starts up fine idle stable, but after 1/2 to 1 mile of driving only when co...
February 19, 2020