OBD Guide

P0DEC

Hybrid/EV Battery Pack Coolant Control Valve C Control Circuit High

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

Symptoms

  • Check Engine light comes on
  • Reduced performance of the hybrid system
  • Increased battery temperature
  • Reducing electric range
  • Possible error messages in the cooling system

Causes

  • Open or short circuit in control circuit
  • Cooling solenoid valve malfunction
  • Problems with wiring harness or contacts
  • Malfunction of the hybrid system control module
  • Corrosion or oxidation of electrical connections

How to Fix

  1. Check the integrity of the wiring harness and connections
  2. Test the resistance and operation of the cooling valve
  3. Check control circuit voltage
  4. Replace faulty valve if necessary
  5. Reset the error code and check for its reappearance

Related codes

Error P0DEC by Vehicle Brand