OBD Guide

P2D2C

Engine Coolant Temperature Measurement System - Multiple Sensor Correlation

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–33 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Reduced engine power
  • Check Engine Light Is On
  • Incorrect temperature readings on the dashboard

Causes

  • Malfunction of one or more coolant temperature sensors
  • Problems in the electrical circuit of the sensors (open circuit, short circuit)
  • Poor contact in sensor connectors
  • Engine control unit malfunction
  • Sensor grounding problems

How to Fix

  1. Check the readings of all coolant temperature sensors using a diagnostic scanner
  2. Inspect the electrical circuits and sensor connectors for damage
  3. Check the resistance of temperature sensors at different temperatures
  4. If necessary, replace faulty sensors
  5. Check and repair damaged wiring

Related codes

Error P2D2C by Vehicle Brand