OBD Guide

P26D9

Engine Coolant Pump Clutch Control Circuit Low

P26D9 is an OBD-II diagnostic trouble code meaning: Engine Coolant Pump Clutch Control Circuit Low. Common causes: open or short circuit in control circuit, clutch control relay malfunction. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Engine overheating
  • Insufficient engine warm-up in cold weather
  • Check Engine Light Is On
  • Unstable engine operation
  • Increased fuel consumption

Causes

  • Open or short circuit in control circuit
  • Clutch control relay malfunction
  • Problems with the engine control unit
  • Mechanical failure of the pump coupling
  • Poor contact in circuit connectors

How to Fix

  1. Check the integrity of the wiring in the control circuit
  2. Test the clutch control relay
  3. Check connectors and contacts for oxidation
  4. Diagnose the operation of the control unit
  5. If necessary, replace the coolant pump coupling.

Related codes

Error P26D9 by Vehicle Brand

FAQ

What does the P26D9 code mean?

P26D9 is an OBD-II diagnostic trouble code that indicates: Engine Coolant Pump Clutch Control Circuit Low

What causes a P26D9 error code?

The most common causes of P26D9 include: Open or short circuit in control circuit; Clutch control relay malfunction; Problems with the engine control unit; Mechanical failure of the pump coupling.

How do I fix a P26D9 diagnostic trouble code?

To fix P26D9: Check the integrity of the wiring in the control circuit. Test the clutch control relay. Check connectors and contacts for oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P26D9?

Limited driving only, diagnose soon

How much does it cost to fix P26D9?

The estimated repair cost for P26D9 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat