Manufacturer Code Charts: 2197

Open circuit in left oxygen sensor upstream of TWC [KAT] (lambda control was switched off). (P2A03)


Possible cause:

- G3/3 (Left O2 sensor, before TWC [KAT])
Affected functions:

- Engine diagnosis
- Exhaust system

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

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