P0218 on Chrysler: How to Diagnose & Fix
P0218 — Chrysler-specific definition
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. This happens even though the car has a factory transmission oil cooler (Mopar 4786466AC on the 2002 Prowler).
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 (2)
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?
On Chrysler, P0218: Chrysler service information names P0218 'High Temperature Operation Activated': transmission sump oil temperature reached about 240F (116C) and the controller switched to an overheat shift schedule. This matches the generic transmission over-temperature meaning. Source: Chrysler service manual excerpts, e.g. https://s3.amazonaws.com/jeepwranglerjk2010/7c032f26.html and https://mopar1973man.com/cummins/articles.html/4th-generation/engine/obdii-error-codes/p0218-transmission-high-temperature-operation-activated-r707/ On Chrysler it is documented across 1 model: Prowler.
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.
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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.