27C6 - P2097 (DME)

27C6 - P2097

Information saved in
DME

Fault code
27C6 - P2097

Fault text
Oxygen sensor, adaptation, trim control, bank 1

Fault description
Post Catalyst Fuel Trim System Too Rich (Bank 1)

Condition for fault identification
Test condition:
Adaptation value reaches max. limit and hangs in this
position
Terminal condition: Engine running
Voltage condition:
none

Condition for fault memory entry
Counter for recognition at adaptation limit >= (2x)
K_LA_TRIM_DIAG_I_AD_MAX_SCHW

Action in service
1. Check the fuel system and the exhaust system for leaks
2. Check pre-cat and post-cat sensors and replace as
indicated

Fault effect and breakdown warning
MIL on after engine runs 2x

Driver information
Warning light:
MIL

Service instruction
none