P259A

Turbocharger Boost Control Position Sensor B Performance - Stuck Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–89 (est.)

Symptoms

Loss of engine power
Increased fuel consumption
Rough engine operation
Check Engine light comes on
Turbocharging does not work at full power

Causes

Faulty turbo control position sensor B
Open or short circuit in the sensor circuit
Problems with the mechanical drive of the sensor
Sensor is dirty or damaged
Problems with the engine control unit (ECU)

How to Fix

Check turbo control position sensor B for damage
Check the integrity of the sensor electrical circuit
Check the mechanical drive of the sensor
Replace sensor if necessary
Check and update ECU firmware if necessary

Related codes

P259B P259C P259D