Cause
Failed boost control solenoid
The valve controlling wastegate or vane position, and therefore how much boost the turbocharger makes. It is a fraction of the price of the turbocharger the code often gets blamed on, and it fails far more often — so it belongs first on any overboost or underboost complaint.
Typically a moderate job.
Some of these codes mean you should stop driving
2 of the 17 codes this can cause indicate a fault where continuing to drive risks damage or is unsafe. Which one you have matters more than the cause does — read the code's own page before deciding.
Codes this can cause (17)
Codes where this is a likely explanation first, rather than merely a possible one.
- P0045 Turbocharger/Supercharger Boost Control A Circuit/Open Likely for this code High
- P0046 Turbocharger/Supercharger Boost Control A Circuit Range/Performance Likely for this code High
- P0047 Turbocharger/Supercharger Boost Control A Circuit Low Likely for this code High
- P0048 Turbocharger/Supercharger Boost Control A Circuit High Likely for this code High
- P0049 Turbocharger/Supercharger A Turbine Overspeed Likely for this code Stop driving Critical
- P0234 Turbocharger/Supercharger A Overboost Condition Likely for this code Stop driving High
- P0243 Turbocharger/Supercharger Wastegate Actuator A Likely for this code High
- P0244 Turbocharger/Supercharger Wastegate Actuator A Range/Performance Likely for this code High
- P0245 Turbocharger/Supercharger Wastegate Actuator A Low Likely for this code High
- P0246 Turbocharger/Supercharger Wastegate Actuator A High Likely for this code High
- P0247 Turbocharger/Supercharger Wastegate Actuator B Likely for this code High
- P0248 Turbocharger/Supercharger Wastegate Actuator B Range/Performance Likely for this code High
- P0249 Turbocharger/Supercharger Wastegate Actuator B Low Likely for this code High
- P0250 Turbocharger/Supercharger Wastegate Actuator B High Likely for this code High
- P0299 Turbocharger/Supercharger A Underboost Condition Likely for this code High
- P2263 Turbocharger/Supercharger A Boost System Performance Likely for this code High
- P2599 Turbocharger Boost Control Position Sensor A Performance — Stuck High Likely for this code High
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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