OBD Guide

P2C2B

Turbocharger/Supercharger Bypass Valve B Position Sensor Circuit Low

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

Symptoms

  • Reduced engine power
  • Unstable operation of the turbocharger
  • Check Engine Light Illuminates
  • Dips during acceleration
  • Switching to emergency mode

Causes

  • Bypass valve position sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Problems with power or grounding of the circuit
  • Mechanical failure of the bypass valve

How to Fix

  1. Check the integrity of the sensor wiring and connectors
  2. Measure resistance and voltage at the sensor
  3. Check the mechanical operation of the bypass valve
  4. Replace faulty position sensor
  5. Clean or replace bypass valve if necessary

Related codes

Error P2C2B by Vehicle Brand