P0742 on Jeep: How to Diagnose & Fix
Torque Converter Clutch Circuit Stuck On
3 Jeep models · 3 documented issues · 1 critical · $150-$6,500 repair
P0742 on Jeep by model: symptoms, diagnosis and fix
The ZF 948TE 9-speed automatic transmission exhibits harsh shifting, delayed engagement, and unexpected shifting into neutral. Early models (2014-2015) experienced the most severe issues. The transmission can unexpectedly shift into neutral while driving, creating a crash risk.
Common Symptoms
- Lunging forward after downshift
- Hanging in 2nd gear before aggressive shift
- Failure to downshift when accelerating
- Erratic upshifts and downshifts
- Transmission suddenly shifts into neutral while driving
How to Fix
Multiple TSB software flashes and relearn procedures available (e.g., TSB 21-019-17 flash for transmission diagnostic and shift enhancements, TSB 21-013-16 948TE Quick Learn procedure); on 2014-2015 models the X80 warranty extension covers transmission replacement for 6 years/100,000 miles, and recall 16V529000 (2014-2015) reprograms the PCM/TCM and replaces the range sensor harness if needed. For severe cases, transmission replacement or reprogramming required. Always ensure latest software updates installed. Regular transmission fluid services every 60,000 miles recommended.
Owner tips & cautions
- WarningAvoid 2014-2015 model years; 2016+ have significant improvements
- TipRegular transmission fluid services every 60,000 miles (not "lifetime")
Sources for this issue (8)
- JeepProblems: Hard, Strange Shifts and Sudden Shutdowns with the ZF 9-Speed Transmissionmedia
- Transmission Repair Cost Guide: ZF 9HP48 Problems & Specsmedia
- Allpar Forums: What is the truth about the ZF 9 speed?forum
- Jeep Cherokee Club: Transmission delayed/rough shifting SOLVED?forum
- Cherish Your Car: Jeep Cherokee Transmission Problems: 9-Speed Failuresmedia
- FCA TSB 21-025-19 - Nine-Speed Automatic Transmission (X80 Warranty Extension), 2014-2015 KL Cherokeetsb
- NHTSA Recall 16V-529 Part 573 Safety Recall Reportrecall
- NHTSA Recall 19V-447 Part 573 Safety Recall Reportrecall
The ZF 8HP 8-speed automatic transmission can exhibit harsh shifts, hesitation, or erratic behavior. Some owners report the transmission hunting between gears or feeling like it's in the wrong gear for the driving conditions.
Common Symptoms
- Harsh or jerky shifts
- Transmission hunting between gears
- Delayed engagement from Park
- Rough downshifts
- Feels sluggish to respond
How to Fix
Update transmission software to latest calibration. Perform fluid change with ZF-approved ATF. Adaptive learning reset may improve shift quality. If issues persist, valve body inspection or replacement may be needed.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Mopar 8 & 9 Speed ATF 68218925ABOEMMopar 68218925AB
Confirm the transmission service information, required quantity and fill-temperature procedure; never substitute ATF+4 or use this as authorization for a flus
- Crown 52854834AB 845RE/850RE transmission pan-and-filter assemblyOEMCrown 52854834AB
Integrated pan/filter replacement for the confirmed 845RE or 850RE branch during a proper service Fitment/availability: Crown catalogs 52854834AB for 2014-2021 WK2 845RE and 2017-2022 850RE applications. Confirm transmission code and VIN…
- Genuine Mopar 68225344AA 8HP70/8HP75 transmission pan-and-filter assemblyOEMMopar 68225344AA
Integrated pan/filter replacement for the confirmed 8HP70/8HP75 branch during a proper service Fitment/availability: The Jeep catalog associates this pan/filter family with specified 3.0L diesel, 5.7L and 6.4L applications. Confirm VIN a…
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
- TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
- TipSearch Jeep Grand Cherokee forums and owner groups for real-world experiences and DIY guides
- TipGet multiple quotes from independent mechanics - dealer prices can be 2-3x higher for the same repair
Sources for this issue (1)
The ZF 9HP48 9-speed automatic transmission suffers from delayed shifts, harsh gear changes, unexpected stalling, and confusion at low speeds. NHTSA recall 16V529000 (FCA S55) covered 329,540 FCA vehicles, including 2015 Renegades, for insufficient crimps in the transmission wire harness that could cause unexpected shift to neutral. The transmission struggles with shift logic at low speeds, causing a jerky driving experience. TSBs in 2016 (e.g., 21-010-16) addressed a stuck-in-4th-gear fault (P072F), coast-down bumps, and lift-foot 4-5 upshifts.
Common Symptoms
- Harsh shifting especially 1-2 and 2-3
- Transmission shifts to neutral unexpectedly
- Jerky low-speed driving
- Delayed gear engagement from park
- Bump or lurch in 4th gear
- Vehicle stalls at low speed
How to Fix
Dealer TCM and PCM software reflash to latest calibration is the first step (free under TSB). If recall applies, dealer will reprogram powertrain and transmission control modules and replace transmission range sensor wiring harness if necessary. For persistent issues, a transmission fluid change with correct ZF fluid (Mopar 68218925AB) and adaptive reset may help. In rare cases, valve body replacement needed ($1,200-2,000).
Owner tips & cautions
- TipDemand the latest TCM calibration from your dealer - multiple software updates have been released to improve shift quality
- TipSome owners report improved shifting after switching to manual/sport mode in stop-and-go traffic
Sources for this issue (5)
- NHTSA Recall 16V-529 Part 573 Safety Recall Reportrecall
- FCA TSB 21-010-16 Rev. A - Flash: Transmission Shift and Drivability Enhancements (2016 Renegade 948TE)tsb
- CarComplaints.com - 2015 Renegade 9-Speed Automatic Transmission Problemsnhtsa
- JeepRenegadeForum.com - 9-Speed Auto Trans Warningforum
- JeepProblems.com - ZF 9-Speed Transmission Issuesnews
P0742 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 P0742 mean on a Jeep?
P0742 stands for "Torque Converter Clutch Circuit Stuck On." P0742 means the torque converter clutch (TCC) circuit is stuck on, meaning the lockup clutch that mechanically links the engine to the transmission stays engaged when it should release. The computer commands the clutch on and off, and when it detects the converter clutch remaining applied, it sets this code. The classic symptom is the engine stalling when coming to a stop, similar to driving a manual without pushing the clutch in, along with possible harsh shifts or poor fuel economy. It points to a hydraulic or solenoid problem inside the transmission rather than the engine. On Jeep it is documented across 3 models: Cherokee, Grand Cherokee, Renegade.
What are the most common causes of P0742?
The most common causes of P0742 are: Stuck or failed torque converter clutch solenoid, Stuck valve in the valve body (TCC apply valve), Contaminated or degraded transmission fluid, Internal transmission hydraulic leak holding the clutch on, Wiring or connector fault to the TCC solenoid, Faulty torque converter, Dirty or clogged transmission filter. The specific cause varies by vehicle.
How much does it cost to fix P0742 on a Jeep?
Published repair estimates on Jeep range from $150 to $6,500 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.