OBD Guide

P011F

Engine Coolant Temperature 2 / Ambient Air Temperature Correlation

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Switching to emergency mode
  • Incorrect temperature readings on the dashboard

Causes

  • Coolant temperature sensor malfunction
  • Ambient temperature sensor malfunction
  • Wiring harness damage
  • Short circuit or open circuit
  • Problems with sensor contacts

How to Fix

  1. Check the readings of both sensors using a diagnostic scanner
  2. Inspect the wiring harness for damage
  3. Check sensor contacts for oxidation and corrosion
  4. Replace the faulty sensor if necessary
  5. Clear error codes and test drive

Related codes

Error P011F by Vehicle Brand