29F4 - P0420

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

none

29F4

29F4 - P0420

Information saved in

DME

Fault code

29F4 - P0420

Fault text

Catalytic-converter conversion

Fault description

Catalyst System Efficiency Below Threshold (Bank 1)

Condition for fault identification

Test condition: none

Terminal condition: none Voltage condition:

none

Condition for fault memory entry

none

Action in service

none

Fault effect and breakdown warning

Driver information Warning light: none