P0239

Turbocharger/Supercharger Boost Sensor B Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Loss of engine power
Unstable engine operation
Increased fuel consumption
Check Engine light comes on

Causes

Boost sensor B malfunction
Open or short circuit in wiring harness
Poor contact in the sensor connector
Turbocharger/supercharger problems

How to Fix

Check the status of boost sensor B
Check the integrity of the wiring harness and connectors
Measure resistance and voltage at the sensor
Replace sensor if necessary
Clear error codes and test drive

Related codes

P0238 P0240 P0299