2A2E - P0172 (DME)

2A2E - P0172

Information saved in
DME

Fault code
2A2E - P0172

Fault text
Mixture control

Fault description
System Too Rich (Bank 1)

Condition for fault identification
Test condition:
Mixture adaptation active
Terminal condition: Terminal 15, engine on
Voltage condition:
Voltage in onboard electrical system > 10 V

Condition for fault memory entry
10 sec. mixture adaptation at travel limit, roughly 60 sec.

Action in service
Visual inspection of affected components
Find and repair leaks
Replace pressure sensors in induction tract
Check plug-in contacts and electrical wiring for pressure
sensors in induction tract
Melted catalyst on one bank (visual inspection through
sensor fitting)

Fault effect and breakdown warning


Driver information
Warning light:
NO

Service instruction
none