OBD Guide

P26A5

Engine Coolant Bypass Valve A Position Sensor Circuit Range/Performance

P26A5 is an OBD-II diagnostic trouble code meaning: Engine Coolant Bypass Valve A Position Sensor Circuit Range/Performance. Common causes: valve position sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine Light Is On
  • Incorrect operation of the cooling system
  • Possible engine overheating
  • Reduced interior heating efficiency
  • Unstable engine temperature

Causes

  • Valve position sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in connectors
  • Mechanical failure of the bypass valve
  • Problems with the engine control unit

How to Fix

  1. Check the integrity of the sensor circuit
  2. Inspect connectors and contacts for corrosion
  3. Check the functionality of the position sensor
  4. Check the mechanical operation of the bypass valve
  5. If necessary, replace the sensor or valve

Related codes

Error P26A5 by Vehicle Brand

FAQ

What does the P26A5 code mean?

P26A5 is an OBD-II diagnostic trouble code that indicates: Engine Coolant Bypass Valve A Position Sensor Circuit Range/Performance

What causes a P26A5 error code?

The most common causes of P26A5 include: Valve position sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in connectors; Mechanical failure of the bypass valve.

How do I fix a P26A5 diagnostic trouble code?

To fix P26A5: Check the integrity of the sensor circuit. Inspect connectors and contacts for corrosion. Check the functionality of the position sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P26A5?

Limited driving only, diagnose soon

How much does it cost to fix P26A5?

The estimated repair cost for P26A5 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat