OBD Guide

P2B81

Wastegate Position Sensor A Circuit Performance

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–133 (est.)

Symptoms

  • Reduced engine power
  • Unstable operation of the turbocharger
  • Increased fuel consumption
  • Check engine light comes on
  • Dips during acceleration

Causes

  • Wastegate position sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Wastegate mechanical failure
  • Wastegate drive problems

How to Fix

  1. Check the integrity of the sensor circuit
  2. Inspect the connectors and contacts of the sensor
  3. Check the mechanical operation of the wastegate
  4. Replace wastegate position sensor if necessary
  5. Test the operation of the turbocharger after repair

Related codes

Error P2B81 by Vehicle Brand