P0239
Turbocharger/Supercharger Boost Sensor B Circuit Malfunction
Generic code
Injector Circuit
High severity
Hard repair
Free on OBD DashX
Want real-world data on P0239?
See which problems come with P0239, how often it shows up in other vehicles, and how to fix it — step by step.
- Real-world fix data
- How often it happens
- Step-by-step repairs
What P0239 means
- The fault code P0239 indicates an intermittent issue with the circuit responsible for monitoring the boost pressure in the turbocharger or supercharger.
Possible symptoms
- Reduced engine power or acceleration
- Illuminated check engine light
- Engine runs poorly or not at all
- Excessive exhaust smoke
- Hesitation or surging during acceleration
Possible causes
- Faulty boost sensor
- Loose or corroded electrical connections
- Damaged or frayed wiring in the circuit
- Failed turbocharger or supercharger
Related parts
- Turbocharger/Supercharger: Turbocharger compresses in more air into the engine, hence producing more power output. Problem leads to power loss
Possible solutions
- Replace the boost sensor
- Check and repair any damaged or frayed wiring in the circuit
- Tighten or clean any loose or corroded electrical connections
- Replace the turbocharger or supercharger if necessary
Free on OBD DashX
P0239 on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P0239 No sign-up needed · available in 10 languagesScan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.