P0218 on Chrysler: How to Diagnose & Fix
Transmission Over Temperature Condition
1 Chrysler model · 1 documented issue · $200-$3,000 repair
P0218 on Chrysler by model: symptoms, diagnosis and fix
The Prowler uses a unique rear-mounted Chrysler 42LE 4-speed automatic transaxle with the differential integrated into the unit. The transmission is mounted at the rear axle (like a Corvette) for weight distribution, but the rear mounting location receives less cooling airflow than a front-mounted transmission. Combined with the 3.5L V6's torque, the 42LE overheats during spirited driving, causing shift quality degradation and premature clutch wear. There is no factory auxiliary cooler.
Common Symptoms
- Transmission slipping during spirited driving
- Harsh or delayed shifts after extended driving
- Burning ATF smell from rear of vehicle
- Transmission fluid dark or burnt on dipstick
- Limp mode after aggressive driving (shift to 2nd only)
How to Fix
Install an auxiliary transmission cooler with a thermostat to maintain optimal temperature. Route the cooler lines to the front of the vehicle where airflow is available. Change the ATF+4 fluid every 20,000 miles — the rear-mounted transmission runs significantly hotter than a front-mounted unit. A temperature gauge adapter in the cooler line helps monitor transmission temperature. Avoid stop-and-go driving on hot days.
Sources for this issue (1)
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 Chrysler?
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 Chrysler it is documented across 1 model: Prowler.
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 Chrysler?
Published repair estimates on Chrysler range from $200 to $3,000 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.
Looking for P0218 on a different make?
View P0218 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.