P15D5
Coolant Pump Undervoltage
P15D5 is an OBD-II diagnostic trouble code meaning: Coolant Pump Undervoltage. Common causes: problems with the pump electrical circuit, coolant pump malfunction. Estimated repair cost: $33–111.
Symptoms
- Engine overheating
- Unstable engine operation
- Check engine light is on
- Reduced coolant pump performance
- Increased fuel consumption
Causes
- Problems with the pump electrical circuit
- Coolant pump malfunction
- Relay or fuse problems
- Engine control unit (ECU) malfunction
- Short circuit or break in the wiring harness
How to Fix
- Check the voltage at the coolant pump
- Inspect the electrical circuit for damage
- Check relays and fuses
- Replace the coolant pump if necessary
- Check and replace wiring harness if necessary
Related codes
FAQ
What does the P15D5 code mean?
P15D5 is an OBD-II diagnostic trouble code that indicates: Coolant Pump Undervoltage
What causes a P15D5 error code?
The most common causes of P15D5 include: Problems with the pump electrical circuit; Coolant pump malfunction; Relay or fuse problems; Engine control unit (ECU) malfunction.
How do I fix a P15D5 diagnostic trouble code?
To fix P15D5: Check the voltage at the coolant pump. Inspect the electrical circuit for damage. Check relays and fuses. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P15D5?
Do not drive — repair immediately
How much does it cost to fix P15D5?
The estimated repair cost for P15D5 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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