OBD Guide

P2B93

Wastegate Position Sensor A Exceeded Learning Limit

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Reduced engine power
  • Unstable idling
  • Excessive smoke from exhaust pipe
  • Dips during acceleration
  • Check Engine Light Illuminates

Causes

  • Wastegate position sensor malfunction
  • Seized or corroded wastegate mechanism
  • Open or short circuit in the sensor circuit
  • Wastegate vacuum drive problems
  • ECU software error

How to Fix

  1. Check the mechanical operation of the wastegate
  2. Test the position sensor and its circuit
  3. Inspect vacuum hoses and drive
  4. Clean or replace a stuck wastegate
  5. If necessary, replace the position sensor

Related codes

Error P2B93 by Vehicle Brand