2009 BMW 535i
Mileage
126,137
Service Date
5/18/2023
Services Performed
- Scanned all control modules for relevant faults. Found 2C31, DME Oxygen sensor emissions control, 2DED DMR power management, closed circuit current violation, 29E0 DME mixture control, 2C39 DME catalytic converter upstream oxygen sensor, dynamics, & 2F9E DME oil level all stored in engine controller (DME). Using scan data, observed data parameters for fuel trim and oxygen sensor current with engine running. Noted Bank 1 upstream oxygen sensor current was stuck at -.222 amps and did not vary. Inspected vehiocle, found downstream sensor for bank 2 appeared to have been replaced fairly recently. Replaced remaining 3 oxygen sensors, cleared faults, reset adaptives, and verified oxygen sensors and fuel trims were functioning normally. Test drove vehicle. NOTE: engine oil is leaking from oil pan gasket, which could lead to contamination of downstream oxygen sensors. Recommend re-sealing oil pan.
SHALOM R. gave our service a 5 star review on 5/23/2023
