P0218 Transmission Over Temperature

Description and meaning of DTC p0218

This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model. If you have a P0218 code stored, then you have a transmission fluid temperature sender and likely have a transmission over-temp light in the instrument cluster If your transmission/transaxle fluid temperature is greater than 290 deg. F then P0218 will set and the overtemp light will illuminate. The number one cause of transmission failure is overheated fluid.

p0218 diagnostic trouble code symptoms

Symptoms of a P0218 DTC may include:Vehicle transmission/transaxle won't engageLeaking fluid out of torque converter seal or other locationLow fluid in transmission/transaxle

DTC p0218 - possible causes

Potential causes of a P0218 code include:Overheating due to towing overloaded trailerTransmission cooler or lines restrictedRestriction/debris in transmission coolerLow transmission fluidInoperative cooling fan/fan clutchMissing or damaged front air dam/spoilerBad transmission fluid temperature sensor

How to fix OBD-II diagnostic trouble code p0218

If you're towing a heavy load make sure the vehicle is rated for that load. If the load is too heavy, the transmission cooler may not be able to keep the transmission fluid temperature down. An overheated transmission/transaxle won't last long. Next, make sure that the cooler isn't restricted by any debris and that the lines aren't pinched or leaking. If the transmission cooler is equipped with a cooling fan, make sure it's operating properly. If the transmission fluid smells burnt or is dark in color, perform a transmission fluid flush. If the transmission fluid level is low, top it off and check for leaks. Note: An overheated transmission can expel fluid out of the vent or out of the torque converter seal.

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