P2B91

Turbocharger/Supercharger B Temperature Sensor Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Unstable operation of the turbocharger
Increased fuel consumption

Causes

Turbocharger temperature sensor B malfunction
Open or short circuit in the sensor circuit
Poor contact in sensor connectors
Problems with the engine control unit (ECU)

How to Fix

Check the continuity of the temperature sensor circuit
Inspect the sensor connectors for damage
Check the resistance of the temperature sensor
If necessary, replace turbocharger temperature sensor B

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