P0751 on 2008-2018 Dodge Grand Caravan: Shift Solenoid 'A' Causes and Fixes

What's Unique About the 2008-2018 Dodge Grand Caravan

The 2008-2018 Dodge Grand Caravan exclusively uses the 62TE 6-speed automatic transmission. On this specific transmission, 'Shift Solenoid A' is not a single, individually replaceable part. Instead, it is integrated into a larger assembly known as the solenoid pack or solenoid block. This solenoid pack is a well-documented, high-failure item across many Dodge, Chrysler, and Ram vehicles that use the 62TE transmission due to issues like premature clutch wear, faulty solenoids, and insufficient cooling design.

Symptoms You May Notice

• Check Engine Light is on
• Vehicle is stuck in one gear (limp mode)
• Harsh or delayed shifting, sometimes with a 'clunk'
• Transmission slipping
• Vehicle stalls when shifting from Reverse to Drive
• Reduced fuel economy
• Transmission overheating

Most Likely Causes

1. Failed Transmission Solenoid Pack 🔴 High Probability → Shop Transmission Assembly The solenoid pack on the 62TE transmission is a known high-failure part due to internal electrical or mechanical faults. The design integrates multiple solenoids, a temperature sensor, and pressure switches, increasing the points of potential failure.
   How to confirm: After confirming fluid level and condition are good, a diagnostic scan tool can be used to command the solenoid on and off. If it doesn't respond, or if its resistance is out of spec when tested with a multimeter (typically 10-30 ohms), it has failed. This test can often be done at the main connector without removing the pan.
   Typical fix: Replace the entire transmission solenoid pack, along with the transmission filter and ATF+4 fluid. The updated Mopar part number is 68376696AA. 🎬 Watch: Quick overview of the 62TE transmission solenoid
   Est. part cost: $180-$400
2. Low or Dirty Transmission Fluid 🟡 Medium Probability → Shop Transmission Assembly Many of these vans do not have a traditional dipstick, making it difficult for owners to check the fluid level regularly. Contaminated or low fluid can cause a loss of hydraulic pressure or clog the small passages in the solenoid pack, causing it to stick.
   How to confirm: Check the transmission fluid level using the correct procedure (often requires a special tool, Miller C-3/9336A) and inspect the fluid's condition. It should be bright red and not smell burnt.
   Typical fix: Perform a transmission fluid and filter change. If the fluid is very dark or contains metal shavings, more significant internal damage may be present.
   Est. part cost: $60-$120
3. Clogged Transmission Filter ⚪ Low Probability → Shop Transmission Assembly A clogged filter restricts fluid flow, which can starve the solenoids of the hydraulic pressure they need to operate correctly, triggering the code.
   How to confirm: This is typically found during a fluid and filter service. The old filter may be visibly clogged with clutch material or other debris.
   Typical fix: Replace the transmission filter and fluid.
   Est. part cost: $20-$40

Rare But Worth Checking

• Wiring or Connector Issues: The wiring harness leading to the transmission can become damaged from heat or vibration, causing an intermittent connection to the solenoid pack. Corrosion or bent pins at the main connector can also cause this fault.
• Faulty Transmission Control Module (TCM): → Shop Transmission Assembly While rare, the TCM itself can fail, sending improper signals to the solenoid. Some 2017-2018 models were part of a recall (U87) for a faulty voltage regulator chip in the Powertrain Control Module (which incorporates TCM functions) that could cause stalling or no-start conditions. This should be considered only after all other possibilities have been exhausted.

Diagnosis Steps

1. Check the transmission fluid level and condition. The fluid should be at the proper level and bright red (ATF+4). Burnt-smelling or dark fluid indicates a more serious problem.
2. Use a professional scan tool to check for other transmission-related codes. Note any codes that accompany P0751.
3. Inspect the transmission wiring harness and connector for any visible damage, corrosion, or loose connections. Pay close attention to the main connector on the transmission case.
4. If the fluid and wiring are okay, the next step is to test the solenoid pack. This involves dropping the transmission pan to access the component.
5. With the pan removed, the solenoid pack can be tested for proper electrical resistance with a multimeter or replaced.
6. If the solenoid pack is replaced, it is mandatory to also replace the transmission filter and refill with fresh, manufacturer-specified ATF+4 fluid.
7. After reassembly, a 'Quick Learn' or 'Variable Line Pressure Counter Reset' may need to be performed with a capable scan tool to ensure the TCM adapts to the new part.

Parts You'll Likely Need

• Transmission Solenoid Pack (OEM #68376696AA (supersedes 5169313AA, 5078709AB)) — This is the most common failure point for the P0751 code on the 62TE transmission used in these vans.
  Trusted brands: Mopar, Dorman, Rostra
  OEM price range: $280-$410
  Aftermarket price range: $140-$300
• Automatic Transmission Filter Kit (OEM #5078555AA) — Must be replaced whenever the transmission pan is removed to service the solenoid pack.
  Trusted brands: Mopar, Wix, ATP
  OEM price range: $30-$50
  Aftermarket price range: $15-$30
• Mopar ATF+4 Automatic Transmission Fluid (OEM #68218057AC (Quart)) — This is the required fluid for the 62TE transmission. A fluid change (typically 5-7 quarts) is necessary for this repair.
  Trusted brands: Mopar, Valvoline, Castrol
  OEM price range: $10-$15 per quart
  Aftermarket price range: $7-$10 per quart

Related Codes That Often Appear With This One

• P0700 — This is a generic code that simply means the Transmission Control Module (TCM) has stored a fault. It acts as a 'check engine light' for the transmission and will almost always appear with a specific code like P0751.
• P0868 — This code indicates low transmission line pressure. It can appear with P0751 if the root cause is a severe fluid leak, a clogged filter, or a failing internal pump.
• P1745 — This code indicates that transmission line pressure was too high for an extended period. It can be set along with P0751 and P0868, often pointing to a hydraulic or electronic control issue within the valve body or solenoid pack assembly.

Technical Service Bulletins (TSBs) & Recalls

• While no specific TSB for P0751 on this exact model was found, general Chrysler/Dodge TSBs often recommend a software update for the TCM to address harsh shifting complaints, which can sometimes be related to solenoid performance. It's advisable to check for the latest software version during diagnosis.

Platform-Specific Known Issues

• Many owners report the P0751 code appearing suddenly, often between 80,000 and 150,000 miles, with the vehicle immediately going into limp mode.
🎬 See how a bad solenoid pack causes limp mode
• The lack of a factory-installed dipstick is a frequent complaint, as it prevents easy fluid level checks which could potentially prevent this issue.

Mechanic-Grade Diagnostic Values

• Shift Solenoid Resistance (most solenoids) — expected: 1.6 - 1.8 Ohms. Failure: Reading is open (OL), significantly higher (e.g., 7.2 Ohms), or shorted (near 0 Ohms).
• Line Pressure Solenoid Resistance — expected: 4.8 - 5.1 Ohms. Failure: Reading is significantly outside this range.
• Pressure Switch Resistor Resistance — expected: ~300 Ohms. Failure: Reading is significantly different from 300 Ohms.
• Solenoid Power Supply (Pin 10 at connector) — expected: Battery Voltage (~12.6V) with key on. Failure: Voltage is below 12V, indicating a wiring or relay issue before the solenoid pack.

Scan Tool Commands That Help

• wiTECH or equivalent (e.g., Autel): Quick Learn — Required after replacing the solenoid pack or valve body, or after disconnecting the battery, to reset transmission shift adapts. Failure to perform this can result in harsh or erratic shifting.
• wiTECH or equivalent: Variable Line Pressure (VLP) Counter Reset — Should be performed along with the Quick Learn procedure after major transmission repairs to ensure the TCM correctly calibrates line pressure.
• wiTECH or equivalent: PROXI Configuration Alignment — Necessary if the Powertrain Control Module (PCM/TCM) is replaced or reprogrammed to ensure all vehicle modules are communicating correctly.

Wiring & Ground Locations

• Main Transmission Connector — On the front of the transmission, accessible from the top after removing the airbox assembly.. This is the primary test point for checking solenoid resistance without removing the transmission pan. Pin 10 is the common power feed for most tests.
• Transmission Ground Strap — Bolted to the transmission case, typically near the upper bellhousing bolts and connected to the chassis near the battery tray.. A corroded or loose ground strap can cause a variety of electrical issues, including erratic solenoid operation and incorrect sensor readings, potentially triggering a P0751 code.

Real Owner Repair Stories

• MotorCity Mechanic YouTube Channel (Chrysler/Dodge/VW with 62TE Transmission) — Check engine light on, transmission in limp mode.
  ❌ Tried (didn't work) The video focuses on direct diagnosis rather than failed attempts.
  ✅ What actually fixed it The diagnosis confirmed a failed solenoid within the pack via resistance testing at the main connector. One solenoid read 7.2 Ohms instead of the expected 1.6-1.8 Ohms. Replacing the entire solenoid pack is the required repair.

OEM Part Supersession History

• 5078709AB, 5169313AA → 68376696AA — Updates to improve reliability and address common failure modes of the original design.

Model Year Variations Within This Range

• 2007-2020: While the core 62TE transmission remained largely the same, TCM software calibrations were updated over the years to improve shift quality and address issues. It is always recommended to ensure the vehicle's Powertrain Control Module has the latest software version, which can sometimes resolve shifting complaints without hardware replacement.

Diagnostic Flowchart

Other Known Issues on This Vehicle

Issues unrelated to this code that are worth knowing about as an owner of this generation:

• Cracked Oil Filter Housing / Cooler Assembly (3.6L Pentastar) 🔴 High — Very common, often occurs between 50,000 and 120,000 miles. The plastic housing cracks from heat cycles, causing significant oil and/or coolant leaks into the engine valley. (Ref: TSB 09-003-22 addresses misdiagnosis of these leaks on later models, but no recall was issued for the 2008-2018 range.)
• Faulty Totally Integrated Power Module (TIPM) 🔴 High — Common across many Chrysler/Dodge products of this era. Can cause a wide range of bizarre electrical issues, including no-start conditions, fuel pump failure, erratic lights, and horn activation. (Ref: Several recalls and a class-action lawsuit have addressed TIPM issues, particularly the internal fuel pump relay.)
• Rear Air Conditioning / Heater Line Corrosion 🟠 Medium — Extremely common on vans with rear HVAC. The aluminum lines running under the vehicle corrode from road salt and moisture, causing coolant or refrigerant leaks.
• Rear A/C Evaporator Leak 🟠 Medium — The rear evaporator core, located in the passenger-side rear quarter panel, is a common failure point that leaks refrigerant, causing the A/C system to fail.
• Premature Brake Wear 🟡 Low — Widely reported, especially on 2008 models. Owners complain of needing to replace pads and rotors more frequently than expected, sometimes in as little as 20,000 miles. (Ref: A recall was issued for some early models to address brake issues.)

Used vs. New Parts: Buying Guide for This Vehicle

When a used part is the smart pick: For this specific repair, using a used solenoid pack is strongly discouraged. The solenoid pack is a known high-failure-rate component, and a used part from a junkyard has an unknown history and a high probability of premature failure.

Donor-vehicle mileage cap: roughly under 30000 miles for the part to have meaningful remaining life.

What to inspect on the donor part:

• Verify the part number matches the latest superseded OEM number.
• Inspect the electrical connector for any corrosion, bent pins, or cracks.
• If possible, perform a resistance check on all pins before purchase to verify they are within spec.

OEM-only on this vehicle (don't cheap out):

• Transmission Solenoid Pack - While aftermarket options exist, OEM (Mopar) is highly recommended for longevity and to avoid compatibility issues.

Aftermarket brands forum-validated for this vehicle:

• Rostra
• Dorman (Use with caution, some forum users report mixed results)

Brands owners have reported issues with on this vehicle:

• Unbranded, no-name parts from online marketplaces should be avoided as their quality control is often poor.

Real Owner Stories

Aggregated from forums and TSBs cited above. Mileages and costs reflect what owners reported in those sources.

Related OBD-II Codes

• P0700 — A general transmission control system malfunction code that often accompanies specific solenoid codes like P0751.
• P0750 — A related shift solenoid circuit code frequently seen when the integrated solenoid pack on the 62TE transmission fails.
• P0841 — A pressure switch performance code; the 62TE solenoid pack integrates pressure switches which can fail alongside the solenoids.
• P0944 — Loss of Hydraulic Pump Prime; can occur if fluid levels are low or the filter is clogged, both of which are listed causes for P0751.

Frequently Asked Questions