enbgde
P0218 Generic (SAE) Basic entry

Transmission Fluid Over Temperature Condition

Updated 2026-10-02 · Fuel & air metering (injector circuit)

Severity
High
Typical repair cost
60 – 500 EUR
System
Powertrain

What it means

P0218 is defined as "Transmission Fluid Over Temperature Condition". the engine control module stores it when the monitored condition for this component or system is outside the limits programmed by the manufacturer.

This entry is compiled automatically from the standard definition and typical diagnostic practice for this type of fault. A detailed, reviewed article is in preparation.

Advertisement728 × 90

Symptoms

  • Check engine light on
  • Rough or unstable idle
  • Hesitation or poor acceleration
  • Increased fuel consumption
  • Possible limp mode with reduced power

Common causes

  1. Transmission Fluid Over Temperature Condition worn, contaminated or out of calibration
  2. Mechanical problem in the system the sensor measures
  3. Air, vacuum or exhaust leak influencing the reading
  4. Wrong or low-quality replacement part
  5. Wiring resistance causing a small voltage offset

How to diagnose

  1. Compare the live Transmission Fluid Over Temperature Condition reading with a known-good value or a second sensor at idle and at 2500 rpm
  2. Check for air, vacuum or exhaust leaks that could skew the reading
  3. Inspect the component for contamination and clean it if the design allows
  4. Verify the part number is correct for the engine
  5. Replace the Transmission Fluid Over Temperature Condition if the reading remains out of specification

Frequently asked questions

Can I keep driving with P0218?

Not for long. This code can lead to expensive follow-up damage or affects safety systems; have it checked as soon as possible.

Will clearing P0218 fix it?

No. Clearing only erases the stored code; it returns as soon as the monitor runs again unless the cause is repaired.

Symptoms linked to this code

Terms to know

Torque converter and lock-up clutchCVT (continuously variable transmission)Transmission fluid (ATF / gear oil)

Related codes

P0216P0217P0219P0220

Nearby codes in this group