P0790moderate severityPowertrain
Normal/Performance Switch Circuit Malfunction
on 2014 Audi Q7 3.0L Supercharged V6 · AWD
What this code means
The normal/performance mode switch circuit is not functioning correctly. This affects the transmission's ability to change shift modes.
Symptoms
- Unable to change shift mode
- Stuck in one shift program
- Check engine light on
Common causes
- Faulty mode switch
- Wiring or connector fault
- Failed valve body
- Internal transmission fault
Diagnostic steps
- Test the mode switch operation
- Scan for related codes
- Inspect switch wiring and connectors
- Check transmission fluid and valve body
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