P0218 on Ford: How to Diagnose & Fix
Transmission Over Temperature Condition
1 Ford model · 1 documented issue · $300-$2,500 repair
P0218 on Ford by model: symptoms, diagnosis and fix
The 2020-2022 GT500's Tremec TR-9070 7-speed dual-clutch transmission overheats under sustained track use, throwing 'Transmission Too Hot' and 'Clutch Pack Too Hot' messages and derating the car (forced short-shifting / reduced output) once fluid temps climb, especially above ~90F ambient. Compounding it, the factory DCT cooler hard lines and seals are a known weak point and are widely reported to leak, risking fluid loss.
Common Symptoms
- 'Transmission Too Hot' / 'Clutch Pack Too Hot' dash warnings on track
- Forced short-shifting or reduced power (derate) when hot
- Slower/harsher shifts as fluid temperature rises
- DCT fluid leak at cooler lines/fittings
- Recovery of normal behavior after cooldown
How to Fix
Follow the GT500 manual's track maintenance: change the DCT side filter after the first track event then every 20k miles, and change differential fluid after track sessions. For repeated track use, owners add an upgraded DCT fluid cooler and replace the failure-prone factory cooler hard lines/seals with billet fittings and braided lines. Inspect cooler lines for weeping and keep DCT fluid at spec; allow cooldown laps to avoid derate.
Sources for this issue (3)
P0218 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0218 mean on a Ford?
P0218 stands for "Transmission Over Temperature Condition." This code means the transmission fluid has gotten too hot and exceeded a safe temperature limit. The transmission's temperature sensor reported an overheat condition to the computer, which can be caused by an actual overheating situation or by a faulty sensor reporting a false reading. Excessive heat is one of the most damaging things for an automatic transmission, breaking down the fluid and accelerating wear, so this code should be addressed promptly. The vehicle may enter a reduced-power or limp mode to protect the transmission. On Ford it is documented across 1 model: Mustang.
What are the most common causes of P0218?
The most common causes of P0218 are: Low or old/degraded transmission fluid, Faulty transmission fluid temperature sensor, Clogged or restricted transmission cooler or lines, Heavy load/towing or stop-and-go driving overheating the fluid, Slipping clutches generating excess heat, Faulty cooling fan or radiator (shared cooling) issues, Internal transmission wear or restriction. The specific cause varies by vehicle.
How much does it cost to fix P0218 on a Ford?
Published repair estimates on Ford range from $300 to $2,500 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.