[2] Check component G3/2 (O2 sensor upstream of KAT). Signal current: Short circuit to ground

[2] Check component G3/2 (O2 sensor upstream of KAT). Signal current: Short circuit to ground

Test 1: Check component O2 sensor.

1. Check component O2 sensor.
Important note:Reset quantity mean value adaptation data after replacing the following components:(Control unit adaptations/Reset quantity mean value adaptation data.)

- B2/6 (Left hot film mass air flow sensor)
- B2/7 (Right hot film mass air flow sensor)
- B4/6 (Rail pressure sensor)
- G3/1 (O2 sensor downstream TWC)
- G3/2 (O2 sensor upstream of KAT)
- Air filter
Communication with ECU required