P0046
Turbo/Supercharger Boost Control Solenoid Circuit Range/Performance
1992-1998 BMW 325i E36 2.5L I6 M50
Moderate SeverityPowertrainGeneric (SAE)
Description
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.
Related Codes
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P0046 on Other Vehicles
Common Questions
What does code P0046 mean on a 1992-1998 BMW 325i E36?
P0046 stands for "Turbo/Supercharger Boost Control Solenoid Circuit Range/Performance". The boost control solenoid is not responding within expected parameters.
What are the symptoms of P0046 on a BMW 325i E36?
Common symptoms of P0046 include: Check Engine Light, Overboosting or underboosting, Reduced power, Surging.
What causes P0046 on a 1992-1998 BMW 325i E36?
Common causes of P0046 include: Sticking solenoid, Vacuum leak, Wastegate stuck, Boost pressure sensor fault.