P0740 on Jeep: How to Diagnose & Fix
Torque Converter Clutch Circuit Malfunction
3 Jeep models · 3 documented issues · 3 critical · $200-$5,000 repair
P0740 on Jeep by model: symptoms, diagnosis and fix
The Jatco CVT2 continuously variable transmission is the single biggest reliability problem on the Patriot. The CVT overheats frequently, especially in hot weather, stop-and-go traffic, or on hills. When the fluid breaks down from heat, the pulleys wear and the steel belt slips, leading to complete transmission failure. "Transmission Over Temp" and limp mode are extremely common complaints. In 2014, Jeep dropped the CVT in favor of a 6-speed automatic on most trims.
Common Symptoms
- Transmission Over Temp warning
- Vehicle enters limp mode
- Whining or droning noise from transmission
- Shuddering during acceleration
- Loss of power on hills or inclines
- CVT slipping - engine revs but vehicle does not accelerate
How to Fix
Preventive: Change CVT fluid every 30,000 miles using MOPAR CVTF+4 (05191184AA). Replace the external CVT cooler filter (the "soup can" inline filter). Install an auxiliary transmission cooler for sustained relief ($100-200, Hayden 526 or similar). If CVT is slipping or shuddering, replacement is typically the only fix ($2,500-4,500 at a transmission shop). A used CVT from a low-mileage donor ($800-1,500 plus install) is an option.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Mopar 5191184AB CVTF+4 automatic transmission fluid, one quartOEMMopar 5191184AB / 05191184AB
Quantity depends on the exact service operation—do not guess from total c
- Genuine Mopar 5191890AA CVT transmission oil filterOEMMopar 5191890AA
CVT filter replacement as part of a confirmed CVT service plan Fitment/availability: Jeep Patriot with CVT transaxle; confirm VIN/transmission and whether the planned procedure also requires the separate cooler filter, pan seal and one-t…
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Owner tips & cautions
- TipChange CVT fluid every 30,000 miles and replace the inline cooler filter at the same time - this dramatically extends CVT life
- WarningNever tow anything with a CVT-equipped Patriot - the additional heat will destroy the transmission
- TipIf buying a Patriot, try to find a 2014+ model with the 6-speed automatic instead of the CVT
Sources for this issue (3)
First-generation Compass models (2007-2017) equipped with the Jatco CVT2 continuously variable transmission suffer from overheating, slipping, shuddering, and premature failure. The CVT fluid breaks down under heat stress, causing the pulleys to wear and the belt to slip. Overheating is especially common in hot weather, stop-and-go traffic, or when towing. "Transmission Over Temp" warnings are extremely common.
Common Symptoms
- Transmission Over Temp warning light
- Vehicle enters limp mode
- Whining or droning noise from transmission
- Slipping sensation during acceleration
- Jerky or shuddering movement
- Loss of power on hills
How to Fix
Change CVT fluid every 30,000-40,000 miles using only MOPAR CVTF+4 (05191184AA). Replace the CVT external cooler filter (inside the "soup can" filter housing on the cooler line). If CVT is slipping badly, replacement is typically needed ($3,000-5,000 at dealer, $2,000-3,500 independent). Some owners have found success with Valvoline CVT fluid as an alternative.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Mopar CVTF+4 continuously variable transmission fluid, one quartOEMMopar 05191184AB (supersedes 05191184AA)
A factory-procedure fluid service on a first-generation Jeep Compass confirmed to use the Jatco CVT and CVTF+4 Fitment/availability: 05191184AB is the current one-quart Mopar CVTF+4 package and supersedes 05191184AA.
- Mopar/Crown external CVT cooler-line filterOEM5191890AA
Replacement of the external cooler-line filter during the applicable CVT service on a confirmed MK Compass Fitment/availability: 5191890AA is cataloged for 2007-2017 Compass MK with CVT.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- TipReplace the external cooler filter ("soup can") when changing CVT fluid - a clogged filter causes overheating
- WarningNever tow with a CVT-equipped Compass - the added heat will destroy the transmission quickly
Sources for this issue (2)
On the WJ the automatic-transmission fluid cooler is integrated inside the radiator end tank. As the radiator ages the internal cooler barrier fails, allowing engine coolant and ATF to intermix under pressure. The result is a pink/tan 'strawberry milkshake' in both the transmission and cooling system. Coolant (ethylene glycol) in the transmission destroys clutch material and can ruin the 42RE/45RFE if not caught quickly.
Common Symptoms
- Pink/tan milkshake-colored transmission fluid
- Overfilled transmission (rising fluid level)
- Discolored or contaminated engine coolant
- Harsh shifting, slipping, or limp mode
- Coolant loss without external leak
How to Fix
Stop driving once contamination is found. Replace the radiator (OEM Mopar radiator by application, or aftermarket CSF/Spectra/Koyorad for 1999-2004 WJ) and thoroughly flush the cooling system. Flush/replace ATF and the transmission filter multiple times; badly contaminated transmissions need a rebuild. Many owners add an external auxiliary trans cooler and bypass the in-radiator cooler to prevent recurrence.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Spectra Premium radiator with transmission-oil cooler for the 4.0L branchOEMSpectra Premium CU2262
Radiator replacement after an internal cooler breach is confirmed on a compatible 4.0L WJ Fitment/availability: Spectra CU2262 is manufacturer-cataloged for 1999-2004 Grand Cherokee Laredo 4.0L applications and identifies a plated transm…
- Crown Automotive radiator with automatic-transmission cooler for 4.7L WJOEMCrown Automotive 52079883AB
Radiator replacement after an internal cooler breach is confirmed on a compatible 4.7L WJ Fitment/availability: Crown 52079883AB is explicitly listed for 2001-2004 Grand Cherokee WJ 4.7L gasoline. Confirm VIN, cooler fittings and product…
- Crown Automotive 42RE/44RE/46RE transmission sump filterOEMCrown Automotive 52118789
Confirm the transmission is 42RE and obtain the correct pan gasket/seal separately if it is not included.
- Genuine Mopar 45RFE/545RFE transmission sump filter kitOEMMopar 05013470AE / 5013470AE
It does not replace the separate cooler-return spin-on filter; confirm transmission and VIN.
- Genuine Mopar 45RFE/545RFE cooler-return spin-on transmission filterOEMMopar 5179267AD
Confirm the WJ transmission and current supersession; this is not the sump filter.
- Genuine Mopar ATF+4 five-liter service fluidOEMMopar 68218058AC
Correct-specification replacement fluid during a measured, specialist-directed transmission recovery service Fitment/availability: 68218058AC is Mopar ATF+4 in a five-liter container. Determine the actual service quantity and whether flu…
- ZEREX G-05 50/50 HOAT antifreeze/coolantOEMZEREX ZXG05RU1
Confirm the underhood label/owner manual and calculate total quantity; do not mix with incompatible coolant chemistry or add water to this premix.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (2)
P0740 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 P0740 mean on a Jeep?
P0740 stands for "Torque Converter Clutch Circuit Malfunction." This code indicates a malfunction in the torque converter clutch (TCC) circuit of an automatic transmission. The torque converter clutch mechanically locks the engine to the transmission at cruising speed to improve fuel economy and reduce slippage, and it is engaged by a solenoid controlled by the transmission computer. The code sets when the computer detects an electrical problem with the clutch circuit or sees that the clutch is not engaging or holding as expected. Common signs include slipping, shuddering, poor fuel economy, or stalling when coming to a stop. On Jeep it is documented across 3 models: Patriot, Compass, Grand Cherokee.
What are the most common causes of P0740?
The most common causes of P0740 are: Faulty torque converter clutch (TCC) solenoid, Low or contaminated transmission fluid, Wiring or connector fault in the TCC circuit, Worn or failing torque converter, Valve body wear or sticking valves, Internal transmission electrical short, Faulty transmission control module. The specific cause varies by vehicle.
How much does it cost to fix P0740 on a Jeep?
Published repair estimates on Jeep range from $200 to $5,000 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 P0740 on a different make?
View P0740 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.