P2B90

Symptoms

• Reduced engine power
• Increased fuel consumption
• The engine goes into emergency mode
• Check Engine light comes on
• Turbocharger overheating

Causes

• Turbocharger B temperature sensor malfunction
• Open or short circuit in the sensor circuit
• Poor contact in sensor connectors
• Wiring harness damage
• Engine ECU malfunction

How to Fix

1. Check temperature sensor of turbocharger B for resistance
2. Inspect the sensor circuit for breaks and short circuits
3. Check sensor connectors and contacts
4. Replace temperature sensor if necessary
5. Check and replace wiring harness if necessary

Related codes

Error P2B90 by Vehicle Brand