0777

G3/3 (Left O2 sensor, before TWC [KAT]) : Delay time too long (P2A03)


Possible cause:

- Exhaust system
- G3/3 (Left O2 sensor, before TWC [KAT])
- Selfadaptation of mixture formation
Affected functions:

- Engine diagnosis
- Exhaust system

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Test 1: Check component G3/3 (Left O2 sensor, before TWC [KAT]).

Test 2: Check exhaust system for leaks.

1. Check component G3/3 (Left O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.


2. Check exhaust system for leaks.
Possible cause of fault

- Leaks
Possible remedy

- Check entire exhaust system for leaks.