P0046moderate severityPowertrain
Turbo/Supercharger Boost Control Solenoid Circuit Range/Performance
on 1997 Ford Probe 2.2L I4 · FWD
What this code means
The boost control solenoid is not responding within expected parameters.
Symptoms
- Check Engine Light
- Overboosting or underboosting
- Reduced power
- Surging
Common causes
- Sticking solenoid
- Vacuum leak
- Wastegate stuck
- Boost pressure sensor fault
Diagnostic steps
- Monitor boost pressure vs commanded
- Test solenoid operation
- Check vacuum lines
- Inspect wastegate
Repair notes
Replace solenoid or repair wastegate.
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