OBD Guide

P2D06

Motor Electronics Coolant Pump B Overspeed/Air in System

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

Symptoms

  • Engine overheating
  • Unstable engine operation
  • Increased fuel consumption
  • Reduced engine power
  • Hot air from the heating system

Causes

  • Cooling pump malfunction
  • Air lock in the cooling system
  • Pump wiring problems
  • Engine control unit malfunction
  • Low coolant level

How to Fix

  1. Check coolant level
  2. Remove air from the cooling system
  3. Check the operation of the cooling pump
  4. Diagnose pump wiring
  5. Check the engine control unit

Related codes

Error P2D06 by Vehicle Brand