OBD Guide

P25D6

Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Stop Performance

P25D6 is an OBD-II diagnostic trouble code meaning: Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Stop Performance. Common causes: bypass valve position sensor malfunction, mechanical valve sticking. Estimated repair cost: $33–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • Deterioration of the interior heating system
  • Increased fuel consumption
  • Check Engine Light Is On
  • Reduced engine power
  • Unstable engine operation at idle

Causes

  • Bypass valve position sensor malfunction
  • Mechanical valve sticking
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Problems with the engine control unit

How to Fix

  1. Check the condition of the bypass valve and its mechanical operation
  2. Check the electrical circuit of the position sensor
  3. Check sensor connectors and connections
  4. Replace faulty position sensor
  5. If necessary, replace the bypass valve

Related codes

Error P25D6 by Vehicle Brand

FAQ

What does the P25D6 code mean?

P25D6 is an OBD-II diagnostic trouble code that indicates: Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Stop Performance

What causes a P25D6 error code?

The most common causes of P25D6 include: Bypass valve position sensor malfunction; Mechanical valve sticking; Open or short circuit in the sensor circuit; Poor contact in the sensor connector.

How do I fix a P25D6 diagnostic trouble code?

To fix P25D6: Check the condition of the bypass valve and its mechanical operation. Check the electrical circuit of the position sensor. Check sensor connectors and connections. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P25D6?

Yes, but get it checked soon

How much does it cost to fix P25D6?

The estimated repair cost for P25D6 is $33–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat