AutoCodes – Chevrolet – P0218 2017 Chevrolet Silverado

P0218 2017 Chevrolet Silverado Code - Transmission Fluid Overtemperature

Quick Answer

The Transmission Fluid Temperature Sensor is a 2-wire sensor located in the pressure switch manifold. Common causes include Low transmission fluid level, Obstructions to the airflow to the radiator or transmission, Radiator damage. 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 2017 Chevrolet Silverado indicates Transmission Fluid Overtemperature.
Common causes: Common causes include Low transmission fluid level, Obstructions to the airflow to the radiator or transmission, Radiator damage.
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.

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Code Popularity 395

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 09, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0218 2017 Chevrolet Silverado Description

The Transmission Fluid Temperature Sensor is a 2-wire sensor located in the pressure switch manifold. The Transmission Control Module (TCM) supplies the transmission fluid temperature sensor signal circuit and a low reference circuit. The resistance of the transmission fluid temperature sensor decreases as the oil temperature increases. The TCM monitors the voltage drop across the transmission fluid temperature sensor and calculates the temperature of the transmission fluid in the sump. The Diagnostic Trouble Code (DTC) sets when the transmission sump temperature is 122°C (251°F) or greater for 10 s.

OBDII Code P0218 2017 Chevrolet Silverado - Transmission Fluid Overtemperature - AutoCodes.com — P0218 2017 Chevrolet Silverado Code - Transmission Fluid Overtemperature

What does this mean?

What are the Possible Causes of the DTC P0218 2017 Chevrolet Silverado?

Low transmission fluid level
Obstructions to the airflow to the radiator or transmission
Radiator damage
Transmission cooling system concerns

How to Fix the DTC P0218 2017 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0218 2017 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0218 2017 Chevrolet Silverado code?

Need more information on how to fix the P0218 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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.

Frequently Asked Questions about P0218 2017 Chevrolet Silverado Code

1. What does the OBDII code P0218 mean on a 2017 Chevrolet Silverado?

P0218 indicates "Transmission Fluid Overtemperature," meaning the transmission fluid has exceeded its safe operating temperature range.

2. What are common symptoms of the P0218 code in a 2017 Chevrolet Silverado?

Symptoms include transmission overheating warnings, erratic shifting, slipping gears, reduced vehicle performance, and possibly a burning smell from the transmission.

3. What causes the P0218 code to trigger on a Chevy Silverado?

Common causes include low transmission fluid levels, contaminated or old transmission fluid, a malfunctioning transmission cooler, towing excessive loads, or a faulty temperature sensor.

4. Can I drive my 2017 Chevrolet Silverado with a P0218 code?

It's not recommended. Driving with overheated transmission fluid can cause severe damage to the transmission, leading to costly repairs.

5. How do I fix the P0218 code on my Silverado?

Repairs may include checking and refilling transmission fluid, flushing and replacing old fluid, inspecting the transmission cooler, or replacing a faulty temperature sensor.

6. How can I prevent the P0218 code from occurring again?

Regular maintenance such as checking fluid levels, replacing old transmission fluid, avoiding overloading or towing beyond capacity, and ensuring proper cooling system operation can help prevent this issue.

7. How do I check transmission fluid on a 2017 Chevrolet Silverado?

With the engine running and at normal operating temperature, use the dipstick located in the transmission to check the fluid level and condition.

8. Is a faulty transmission cooler a common cause of P0218?

Yes, a clogged, damaged, or malfunctioning transmission cooler can prevent proper cooling, leading to overheated fluid and triggering the P0218 code.

9. What happens if I ignore the P0218 code on my Silverado?

Ignoring the code can lead to severe transmission damage, such as burned clutches or seals, which may require a complete transmission rebuild or replacement.

10. Can an aftermarket transmission cooler help prevent P0218 in my Silverado?

Yes, installing a high-quality aftermarket transmission cooler can improve heat dissipation, especially if frequently towing or driving in hot climates.