P209E

The exhaust valve of cylinder 7 is not operated although the CSO is switched off.

Test 1: Check rocker arm coupling of exhaust valve at cylinder 7.

1. Check rocker arm coupling of exhaust valve at cylinder 7.
The rocker arm coupling at the exhaust valve of cylinder 7 does not lock although the CSO is switched off.Possible cause and remedy

- Display the menu 'Actual values' and determine the faulty rocker arm by testing smooth engine running.
- Replace faulty rocker arm.
End of test