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P0218

Symptom: Transmission in limp home.

P0218

Transmission Fluid. Temperature has been too high.


Fault symptoms

Transmission in limp home.

Conditions

No fault in fluid temperature sensor.

Fault criteria

Fluid temperature greater than 155°C for more than 10 seconds.

Fluid temperature greater than 140°C for more than 60 seconds at vehicle speed above 180 km/h.

Diagnostic help

If the fault code has been generated, the high temperature may have degraded the fluid. A transmission that overheats and slips often causes the fluid to become discoloured and smell "burnt". The fluid may also look normal but the additives have been used up resulting in poor shifting quality. If the function has been activated once or more, the fluid should be changed.

In hot climates and when driving at high speeds for long periods, the temperature of the fluid will be higher if the fluid level is high. To reduce the risk of overheating in cars driven under such conditions, the fluid should be level with the MIN mark.

Information on the transmission fluid temperature can be read with the diagnostics tool.

- Select "Read Values / Activate "

- Select " Gearbox Fluid Temperature ".

The value can be read in both V (input from sensor) and °C (as calculated by the control module).

Diagnostic procedure

Change the transmission fluid. Refer to Changing the automatic transmission fluid .