OBD Guide
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P15D6

Coolant Pump Temperature Threshold 1 Exceeded

P15D6 is an OBD-II diagnostic trouble code meaning: Coolant Pump Temperature Threshold 1 Exceeded. Common causes: coolant pump malfunction, low coolant level. Estimated repair cost: $33–111.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–111 (est.)

Symptoms

  • Engine overheating
  • Reduced engine power
  • Check Engine Light Is On
  • Unstable engine operation
  • Noises from the coolant pump area

Causes

  • Coolant pump malfunction
  • Low coolant level
  • Coolant contamination
  • Problems with the pump electrical circuit
  • Pump temperature sensor fault

How to Fix

  1. Check the level and condition of the coolant
  2. Diagnose the operation of the coolant pump
  3. Check electrical connections and wiring
  4. Replace the coolant pump if necessary
  5. Reset error code after repair

Related codes

P15D5P15D7P15D8

FAQ

What does the P15D6 code mean?

P15D6 is an OBD-II diagnostic trouble code that indicates: Coolant Pump Temperature Threshold 1 Exceeded

What causes a P15D6 error code?

The most common causes of P15D6 include: Coolant pump malfunction; Low coolant level; Coolant contamination; Problems with the pump electrical circuit.

How do I fix a P15D6 diagnostic trouble code?

To fix P15D6: Check the level and condition of the coolant. Diagnose the operation of the coolant pump. Check electrical connections and wiring. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P15D6?

Do not drive — repair immediately

How much does it cost to fix P15D6?

The estimated repair cost for P15D6 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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