Saturday, August 31, 2019

2C2E - P2298

2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction



none









2C2E



2C2E - P2298







Information saved in



DME









Fault code



2C2E - P2298









Fault text



Oxygen sensor before catalytic converter 2, overrun check









Fault description



O2 Sensor Out of Range During Deceleration (Bank 2 Sensor 1)









Condition for fault identification



Test condition:





Implausible O2 sensor signal in overrun cutoff phase, no fault memories





Terminal condition: Terminal 15, engine on Voltage condition:





none









Condition for fault memory entry



Bank 2 O2 sensor before catalytic converter voltage less than 3.1 V or greater than 2.1 V with overrun injection deactivation active









Action in service



Visual inspection of wiring and plugs (water or corrosion in plug?)



1a. Repeatedly remove the plug and then FIRMLY insert it again





Electrical check of wiring



Check catalytic converter (FSD lean fault may be entered for the other bank)



Piston rings, injector valves, positive crankcase ventilation OK? FSD fault? Then continue there!



Replace wires or plugs on O2 sensors as indicated



Replace O2 sensor







Fault effect and breakdown warning







Driver information Warning light: MIL ON

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