P26D5
Engine Coolant Pump Supply Voltage Circuit High
P26D5 is an OBD-II diagnostic trouble code meaning: Engine Coolant Pump Supply Voltage Circuit High. Common causes: short circuit in coolant pump circuit, faulty pump relay. Estimated repair cost: $33–167.
Symptoms
- Check Engine light comes on
- Engine overheating
- Unstable engine operation
- Reduced engine performance
- Coolant pump noise
Causes
- Short circuit in coolant pump circuit
- Faulty pump relay
- Problems with wiring or harness
- Coolant pump malfunction
- Problems with the engine control unit (ECU)
How to Fix
- Check the voltage in the coolant pump circuit
- Inspect the wiring and wiring harness for damage
- Check coolant pump relay
- Replace the coolant pump if necessary
- Check and, if necessary, replace the engine control unit (ECU)
Related codes
Error P26D5 by Vehicle Brand
FAQ
What does the P26D5 code mean?
P26D5 is an OBD-II diagnostic trouble code that indicates: Engine Coolant Pump Supply Voltage Circuit High
What causes a P26D5 error code?
The most common causes of P26D5 include: Short circuit in coolant pump circuit; Faulty pump relay; Problems with wiring or harness; Coolant pump malfunction.
How do I fix a P26D5 diagnostic trouble code?
To fix P26D5: Check the voltage in the coolant pump circuit. Inspect the wiring and wiring harness for damage. Check coolant pump relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P26D5?
Do not drive — repair immediately
How much does it cost to fix P26D5?
The estimated repair cost for P26D5 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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