P0975moderate severityPowertrain
Shift Solenoid B Control Circuit Range/Performance
on 2000 Audi A6 2.7L Turbo V6 · AWD
What this code means
The PCM detected that the shift solenoid B control circuit is not responding as expected. This usually points to a wiring or solenoid problem affecting shifting.
Symptoms
- Harsh or delayed shifts
- Transmission stuck in gear
- Check engine light on
Common causes
- Faulty shift solenoid B
- Damaged or corroded wiring
- Poor electrical connection
- Failed PCM/TCM driver
Diagnostic steps
- Scan and record freeze frame data
- Inspect solenoid connector and wiring
- Measure solenoid resistance and compare to spec
- Test control circuit for voltage/ground
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