OBD Guide
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P15D2

Coolant Pump Cut-Off Overvoltage

P15D2 is an OBD-II diagnostic trouble code meaning: Coolant Pump Cut-Off Overvoltage. Common causes: coolant pump malfunction, pump relay problems. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Engine overheating
  • Unstable engine operation
  • Coolant warning light comes on
  • Reduced cooling system performance
  • Coolant pump noise

Causes

  • Coolant pump malfunction
  • Pump relay problems
  • Short circuit in control circuit
  • Engine control module malfunction
  • Wiring harness damage

How to Fix

  1. Check the voltage in the coolant pump circuit
  2. Inspect the wiring harness for damage
  3. Check the functionality of the pump relay
  4. Test the coolant pump
  5. If necessary, replace the pump or relay

Related codes

P15D0P15D1P15D3

FAQ

What does the P15D2 code mean?

P15D2 is an OBD-II diagnostic trouble code that indicates: Coolant Pump Cut-Off Overvoltage

What causes a P15D2 error code?

The most common causes of P15D2 include: Coolant pump malfunction; Pump relay problems; Short circuit in control circuit; Engine control module malfunction.

How do I fix a P15D2 diagnostic trouble code?

To fix P15D2: Check the voltage in the coolant pump circuit. Inspect the wiring harness for damage. Check the functionality of the pump relay. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P15D2?

Limited driving only, diagnose soon

How much does it cost to fix P15D2?

The estimated repair cost for P15D2 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat