2C2D - P2297

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

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2C2D

2C2D - P2297

Information saved in

DME

Fault code

2C2D - P2297

Fault text

Oxygen sensor before catalytic converter, overrun check

Fault description

O2 Sensor Out of Range During Deceleration (Bank 1 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 1 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