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Engine-Codes – Generic – P0218

P0218 Code - Transmission Fluid Overtemperature

Quick Answer

The P0218 diagnostic trouble code (DTC) indicates that the transmission fluid temperature has exceeded the maximum allowable limit set by the vehicle's engine control module (ECM). Common causes include Low transmission fluid level, Malfunctioning transmission cooler, Faulty thermostat. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0218 indicates Transmission Fluid Overtemperature.
Common causes
Common causes include Low transmission fluid level, Malfunctioning transmission cooler, Faulty thermostat.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P0218 Description

The P0218 diagnostic trouble code (DTC) indicates that the transmission fluid temperature has exceeded the maximum allowable limit set by the vehicle's engine control module (ECM). This can be a serious issue as the transmission fluid plays a crucial role in the proper functioning of the transmission system in a vehicle. When the transmission fluid overheats, it can lead to a variety of problems that can affect the vehicle's performance and potentially cause long-term damage if not addressed promptly.

OBDII Code P0218 - Transmission Fluid Overtemperature
P0218 Code - Transmission Fluid Overtemperature

Common Causes of P0218

  1. Low transmission fluid level
  2. Malfunctioning transmission cooler
  3. Faulty thermostat
  4. Blocked transmission cooler line
  5. Malfunctioning transmission fluid temperature sensor

Symptoms of P0218

  1. Transmission slipping or jerking
  2. Overheating warning light on the dashboard
  3. Burning smell coming from the transmission
  4. Delayed or rough shifting between gears
  5. Transmission fluid leaks under the vehicle

How to Fix P0218

  1. Check and top off transmission fluid levels
  2. Inspect and replace the transmission cooler if necessary
  3. Test and replace the thermostat if faulty
  4. Flush the transmission system and replace the transmission fluid
  5. Check and replace the transmission fluid temperature sensor if needed

Cost to Fix P0218

The cost of repairing a transmission fluid overtemperature issue can vary depending on the underlying cause and the extent of damage. On average, the cost of parts and labor for this repair can range from $200 to $800. However, it is important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is recommended to obtain quotes from local auto repair shops for a more accurate estimate.

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Code P0218 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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