OBD Guide

P2DF6

Coolant Pump E Control Circuit High

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Engine overheating
  • Unstable operation of the cooling system
  • Check Engine Light Is On
  • Reduced interior heating efficiency
  • Increased fuel consumption

Causes

  • Electric coolant pump malfunction
  • Open or short circuit in control circuit
  • Pump relay problems
  • Engine control unit malfunction
  • Oxidation of contacts in connectors

How to Fix

  1. Check the condition of the electric coolant pump
  2. Diagnose the control circuit for breaks and short circuits
  3. Check pump relays and fuses
  4. Scan the control unit for additional errors
  5. If necessary, replace the electric coolant pump

Related codes

Error P2DF6 by Vehicle Brand