P3018high severityPowertrain
Variable Valve Lift System Performance Bank 2
on 2019 Audi A6 3.0L Turbo V6 · AWD
What this code means
The variable valve lift system on Bank 2 is not meeting performance expectations.
Symptoms
- Check Engine Light
- Uneven power between banks
- Engine vibration at certain RPMs
- Reduced high-RPM power
- Valve train noise Bank 2
Common causes
- Worn valve lift mechanism Bank 2
- Oil flow restriction Bank 2
- Control solenoid failure
- Mechanical wear in rocker assembly
- Clogged oil passage
Diagnostic steps
- Monitor Bank 2 valve lift PID
- Check oil pressure at Bank 2 actuator
- Command lift change and verify Bank 2 response
- Compare Bank 1 vs Bank 2 lift transition timing
- Inspect oil passages Bank 2
Repair notes
Replace Bank 2 variable valve lift mechanism.
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