OBD Guide

P25F5

Turbocharger/Supercharger Boost Sensor C Circuit High

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • Reduced engine power
  • Engine transition to emergency mode
  • Increased fuel consumption
  • Unstable engine operation
  • Check Engine Light Illuminates

Causes

  • Boost sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in sensor connectors
  • Wiring Harness Problems
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the integrity of the sensor wiring and connectors
  2. Check the resistance and voltage of the boost sensor
  3. Replace faulty boost sensor if necessary
  4. Check and repair damaged wiring
  5. If necessary, diagnose and repair the ECU

Related codes

Error P25F5 by Vehicle Brand