Engine Error
P0239
Turbo/Supercharger Boost Sensor B Circuit
Severity
Medium
Symptoms
Poor acceleration, failure to build boost, check engine light
Common Causes
- Defective Boost Sensor B
- Vacuum leak to the sensor
- Corroded electrical connection
- Internal turbocharger failure
How to Fix
- 1 Replace Boost Sensor B
- 2 Replace degraded vacuum lines
- 3 Clean sensor connector
- 4 Inspect turbocharger
Estimated Repair Cost
USD
$50
–
$1500
Sensor: 100 - 200; Turbocharger: 1,000+