Valve Lift Control, Cylinder 2 Below Limit

P1353 - 911 Carrera

Valve lift control, cylinder 2 - below limit

Diagnosis conditions
- Acceleration with wide-open throttle

Possible fault cause
- A valve stays at small lift.
- Several valves (various cylinders) do not switch to large lift.

Diagnosis/troubleshooting

Perform system test for large lift

WARNING: Test is carried out while driving. Have a second person operate the Porsche System Tester 2.

1 - Select system test.
2 - Select "Request large lift".
If "Valve lift diagnosis not ready" appears, a fault may have been stored. In this case, delete the fault memory.

The engine must be at operating temperature.
1. Carry out acceleration with wide-open throttle in 2nd gear up to 7,000 rpm. Test in manual range for Tiptronic vehicles.

After 3,000 ignitions the Tester indicates whether a fault is present or not.

In order to ensure that the fault is repaired, the flat-base tappets of the inlet valves of the entire cylinder bank should be replaced if a fault occurs.