Operation CHARM: Car repair manuals for everyone.

Diagnosis Information DME

P1346

Valve lift control after cold start bank X

Diagnostic conditions
- Cold start (engine oil temperature -12 °C ... +60 °C), then:
- Engine idle speed > 15 s
- Full-load acceleration (2nd gear)
- Warm running (engine oil temperature +60 °C ...+80 °C)
- Full-load acceleration (2nd gear)
- Engine idle speed > 15 s

- Time since engine start > 10 minutes

Possible fault causes
- The valves of the specified bank are stuck in small or large lift travel