P2590

Turbocharger Boost Control Position Sensor B Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Reduced engine power
Unstable turbocharging operation
Engine transition to emergency mode
Check Engine Light Illuminates
Dips during acceleration

Causes

Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Position sensor malfunction
Wiring harness damage
Mechanical turbo problems

How to Fix

Check the integrity of wiring and connectors
Test sensor resistance
Check reference voltage and sensor signal
Replace faulty position sensor
Check the mechanical part of the turbocharging system

Related codes

P2589 P2591 P2563