OBD Guide

P0218

Transmission Fluid Temperature Sensor A Over Temperature Condition

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

Symptoms

  • Transmission fluid overheating
  • Reduced shift efficiency
  • Check Engine Light Illuminates
  • The transmission may go into emergency mode

Causes

  • Low transmission fluid level
  • Contaminated or old transmission fluid
  • Transmission fluid temperature sensor malfunction
  • Damage to the wiring harness or sensor connector
  • Problems with the transmission cooling system

How to Fix

  1. Check the level and condition of the transmission fluid
  2. Replace fluid if dirty or old
  3. Check the temperature sensor and its circuit for damage
  4. Replace sensor if necessary
  5. Check transmission cooling system

Related codes

Error P0218 by Vehicle Brand