OBD Guide

P26CD

Engine Coolant Pump Control Circuit High

P26CD is an OBD-II diagnostic trouble code meaning: Engine Coolant Pump Control Circuit High. Common causes: coolant pump malfunction, damaged wiring or poor contacts. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Engine overheating
  • Unstable operation of the cooling system
  • Check Engine Light Is On
  • Reduced cooling efficiency
  • Coolant pump noise

Causes

  • Coolant pump malfunction
  • Damaged wiring or poor contacts
  • Pump relay problems
  • Engine control unit malfunction
  • Short circuit in control circuit

How to Fix

  1. Check the operation of the coolant pump
  2. Inspect the wiring and connections in the control circuit
  3. Check pump relays and fuses
  4. Scan the control unit for other errors
  5. If necessary, replace the coolant pump

Related codes

Error P26CD by Vehicle Brand

FAQ

What does the P26CD code mean?

P26CD is an OBD-II diagnostic trouble code that indicates: Engine Coolant Pump Control Circuit High

What causes a P26CD error code?

The most common causes of P26CD include: Coolant pump malfunction; Damaged wiring or poor contacts; Pump relay problems; Engine control unit malfunction.

How do I fix a P26CD diagnostic trouble code?

To fix P26CD: Check the operation of the coolant pump. Inspect the wiring and connections in the control circuit. Check pump relays and fuses. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P26CD?

Limited driving only, diagnose soon

How much does it cost to fix P26CD?

The estimated repair cost for P26CD is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat