P0750 on Chrysler: How to Diagnose & Fix
Shift Solenoid A Malfunction
6 Chrysler models · 6 documented issues · 6 critical · $200-$3,500 repair
P0750 on Chrysler by model: symptoms, diagnosis and fix
The 42LE 4-speed automatic transmission in the 300M is prone to premature failure, including solenoid pack issues, torque converter clutch failure, and internal clutch pack wear. The high torque output of the 3.5L V6 stresses the transmission beyond its design limits. Harsh shifting, slipping, and limp mode are common symptoms. The transmission is shared with the Intrepid, Concorde, and LHS, and the failure patterns are identical across all platforms. The solenoid pack and connector are the most common failure points.
Common Symptoms
- Harsh or delayed shifting
- Transmission slipping under hard acceleration
- Stuck in 2nd gear limp mode
- Shudder during torque converter lockup at highway speed
- Check engine light with transmission codes
How to Fix
Read all transmission codes with a scan tool that shows Chrysler-specific codes (owners commonly report P0700 together with P1776 and limp mode locked in 2nd gear). If the speedometer drops to zero and the car is stuck in 2nd gear, test the input and output speed sensors first, a frequently reported failure. On 2002-2004 cars, owners report that P1776 most often points to the solenoid/pressure switch assembly (solenoid pack), though some also needed the valve body; check fluid level and wiring before replacing parts, and refill with ATF+4 only. One owner reports paying about $700 for the solenoid pack and sensors. Slipping or harsh shifts that persist after these repairs indicate internal clutch or torque converter wear, which needs a rebuild or replacement transmission ($2,500-$3,500).
Sources for this issue (2)
The Concorde's 42LE 4-speed automatic transmission suffers from solenoid pack failures that cause erratic shifting, limp mode, and delayed engagement. The internal solenoid seals deteriorate, causing pressure loss and harsh or missed shifts.
Common Symptoms
- Transmission stuck in second gear (limp mode)
- Harsh or delayed shifts
- Check engine light with transmission codes
- No reverse
- Slipping between gears
- Delayed engagement when shifting to drive
How to Fix
Replace the transmission solenoid pack assembly and filter. A full transmission fluid flush is recommended at the same time. If the transmission has been driven extensively in limp mode, internal hard parts may also be damaged.
Sources for this issue (2)
The LeBaron uses the Chrysler A604 (41TE) 4-speed electronically-controlled automatic transaxle. This was one of the first fully electronic automatics and its solenoid pack is the primary failure point. The solenoids develop internal leaks and electrical failures, causing erratic shifting, no-shift conditions, and limp mode (locked in 2nd gear). The transmission controller can also fail. The A604 was so problematic that Chrysler waived the warranty deductible, provided loaners, and offered buybacks on early units that couldn't be fixed.
Common Symptoms
- Transmission stuck in 2nd gear (limp mode)
- Transmission fault codes stored in the controller (read with a scan tool)
- Harsh or erratic shifting between all gears
- No upshift from 2nd gear
- Transmission bangs into gear from Park
How to Fix
Replace the solenoid pack assembly (located in the valve body) with an updated unit. The solenoid pack is accessible by removing the side pan. A remanufactured solenoid pack from TransGo or Rostra is $150-250. If the transmission is in limp mode, scan for codes first — many limp mode events are caused by a speed sensor or input/output shaft sensor failure rather than the solenoid pack.
What you need to diagnose it
The repair instructions explicitly call for reading stored codes. Use a scanner that can read the named code families before choosing a repair.The recommended scanner supports these code families; confirm your exact year, model and module coverage before buying.
ANCEL AD310 Classic OBD-II Scanner
Read & clear engine (P) codes
$20–$40View
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Reading and clearing the code is DIY work. Module replacement or reprogramming is not — most modules are VIN-programmed, so a new one does nothing until a shop codes it to your car. Check for an open recall or service bulletin before buying anything.
Sources for this issue (2)
The 42LE 4-speed automatic transmission in the LHS shares the same failure patterns as the Intrepid, Concorde, and 300M. Solenoid pack failures, torque converter clutch issues, and internal clutch pack wear lead to harsh shifting, slipping, and limp mode. The LHS's heavy curb weight and 3.5L V6 torque output stress the transmission. The solenoid pack and transmission connector are the most common failure points and can be serviced without removing the transmission.
Common Symptoms
- Harsh or delayed gear shifts
- Transmission slipping
- Stuck in limp mode (2nd gear only)
- Shudder at highway speed during TCC lockup
- Check engine light with P0700 series codes
How to Fix
Start with the cheap checks before agreeing to a rebuild. First, have the shop read the transmission codes with a scan tool. Next, check the fluid level and condition. Chrysler bulletin 21-006-01 covers automatic transmission fluid use (ATF+4), so make sure ATF+4 is what goes in. Then inspect the transmission wiring connector and the solenoid pack. These are the most common failure points, and both can be serviced without removing the transmission. If the complaint is a shudder at highway speed when the torque converter locks up, ask the shop to check Chrysler bulletins 21-05-97 and 18-09-97. Both cover shudder during EMCC (converter lock-up) operation on the 41TE/42LE. If the car is slow to go into gear, bulletin 21-07-98 covers delayed transaxle engagement. These are service bulletins, not recalls. If the codes and the slipping point to worn internal clutches, the transmission needs a rebuild or a replacement unit. On CarComplaints, owners report that the most common LHS transmission problems cost about $1,200 to fix, at around 84,000 miles. Owners of the 1999 model who reported transmission failure averaged about $2,400.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (3)
The 41TE (A604) automatic transmission is prone to solenoid pack failure causing erratic shifting, limp mode, and harsh engagement. The 41TE was one of the first fully electronic automatic transmissions and reliability suffered.
Common Symptoms
- Harsh shifting
- Stuck in 2nd gear (limp mode)
- Delayed engagement
- Slipping between gears
How to Fix
Replace solenoid pack assembly and fluid filter. Use only ATF+4 fluid. The updated solenoid pack from Mopar addresses the original design weaknesses. A full transmission rebuild may be needed if internal damage has occurred.
Sources for this issue (2)
The rear-mounted 42LE (A606) automatic can drop into limp-in (fail-safe) mode when the electronic shift solenoid pack develops internal faults. Symptoms are the transmission locking into a single gear (commonly 2nd, or only 1st and reverse) until the ignition is cycled, often accompanied by a check-engine/transmission light. This is distinct from the fluid-overheating and AutoStick harsh-shift issues: here the solenoid pack itself (or its wiring/connector) is the root cause and typically sets solenoid-performance codes.
Common Symptoms
- Transmission stuck in one gear (limp mode)
- Only 1st and reverse available after warm-up
- Harsh or no upshift with warning light
- Fault clears after ignition off/on
- No torque-converter lockup
How to Fix
Scan for codes and confirm with pressure/solenoid tests before parts replacement. Replace the shift solenoid pack (reman Mopar A606/42LE solenoid pack, PN 4539766) along with a fresh filter and correct ATF; cycling the ignition off/on temporarily clears limp mode as a get-home measure. Verify the transmission connector and internal wiring harness are not the fault before condemning the pack.
What you need to diagnose it
The repair instructions explicitly call for reading stored codes. Use a scanner that can read the named code families before choosing a repair.The recommended scanner supports these code families; confirm your exact year, model and module coverage before buying.
ANCEL AD310 Classic OBD-II Scanner
Read & clear engine (P) codes
$20–$40View
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Reading and clearing the code is DIY work. Module replacement or reprogramming is not — most modules are VIN-programmed, so a new one does nothing until a shop codes it to your car. Check for an open recall or service bulletin before buying anything.
Sources for this issue (2)
P0750 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 P0750 mean on a Chrysler?
P0750 stands for "Shift Solenoid A Malfunction." This code indicates the transmission control system detected a malfunction in shift solenoid 'A', one of the electrically operated valves that direct hydraulic fluid to engage gears. The computer commands these solenoids to control upshifts and downshifts, and it monitors their circuits and the resulting gear changes. When solenoid A doesn't respond electrically as expected — or the resulting shift doesn't happen correctly — this code is set. You may notice harsh, delayed, or missing shifts, or the transmission may enter a fail-safe (limp) mode. On Chrysler it is documented across 6 models: 300M, Concorde, LeBaron, LHS, Cirrus, Prowler.
What are the most common causes of P0750?
The most common causes of P0750 are: Failed or stuck shift solenoid A, Open, shorted, or chafed solenoid wiring, Corroded or loose transmission connector, Low, dirty, or degraded transmission fluid, Clogged solenoid or valve body passages, Internal valve body or hydraulic fault, Faulty transmission control module (TCM). The specific cause varies by vehicle.
How much does it cost to fix P0750 on a Chrysler?
Published repair estimates on Chrysler range from $200 to $3,500 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.