P0846 on 2009-2019 Dodge Journey: Transmission Pressure Sensor Causes and Fixes

What's Unique About the 2009-2019 Dodge Journey

The Dodge Journey, particularly those equipped with the common 62TE automatic transmission, is known for issues related to the solenoid pack, which houses the pressure sensors. The 62TE was an evolution of the older 4-speed 41TE, and this design adaptation has known weak points, including the solenoid pack and valve body. The pressure sensors are not sold individually by Mopar and are replaced as part of the entire solenoid/pressure switch assembly. The problem is very frequently the sensor assembly itself due to internal contamination or failure, rather than a simple external wiring issue.

Symptoms You May Notice

• Harsh, erratic, or delayed gear shifts.
• Transmission getting stuck in one gear (often referred to as 'limp mode').
• Check Engine Light is illuminated.
• Reduced fuel efficiency.
• Difficulty accelerating or vehicle feels sluggish.
• Transmission warning light may be on.

Most Likely Causes

1. Faulty Transmission Fluid Pressure Sensor / Solenoid Pack 🔴 High Probability → Shop Transmission Assembly The 62TE transmission's pressure sensors are integrated into a switch assembly on the valve body, which is a very common failure point. Debris from normal wear, especially from the torque converter clutch, can contaminate the solenoid pack and cause the delicate pressure switches to fail.
   How to confirm: A professional scan tool can read live data from the transmission sensors. If sensor 'B' (also known as the 2/4 pressure switch) provides an erratic or static reading while others respond correctly, it points to a faulty sensor assembly. Resistance checks at the main connector can also condemn the pack; the pressure switch resistors should measure around 300 ohms.
   Typical fix: Replace the entire transmission solenoid pack (also called the pressure switch assembly), which is located on the valve body inside the transmission pan. 🎬 Watch: Step-by-step 62TE solenoid pack and valve body replacement guide.
   Est. part cost: $150-$300
2. Low or Contaminated Transmission Fluid 🟡 Medium Probability → Shop Transmission Assembly The 62TE transmission can be sensitive to fluid level and condition. Lack of regular maintenance can lead to fluid breakdown or low levels, causing erratic pressure and shifting problems that can trigger this code.
   How to confirm: Check the transmission fluid level and condition using the dipstick. The fluid should be at the correct level, bright red, and not smell burnt. Dark, brown, or burnt-smelling fluid indicates it's overdue for a change and may contain contaminants.
   Typical fix: Perform a transmission fluid and filter change using Mopar ATF+4 or a licensed equivalent. If the fluid is very contaminated, it's a strong indicator that internal components like the solenoid pack may already be damaged.
   Est. part cost: $50-$150
3. Wiring or Connector Issues ⚪ Low Probability While less common than internal failures for this code, the main transmission wiring harness connector can be exposed to weather and road debris, leading to corrosion. In some cases, wires between the TCM and the transmission can break.
   How to confirm: Visually inspect the main wiring harness connector at the transmission for corrosion, bent pins, or loose connections. Test for continuity on the (T47) 2/4 Pressure Signal circuit between the PCM and the transmission connector; resistance should be below 5.0 ohms.
   Typical fix: Clean the corroded connector terminals with an electrical contact cleaner or repair/replace the damaged section of the wiring harness.
   Est. part cost: $10-$100

Rare But Worth Checking

• Faulty Transmission Control Module (TCM) or Powertrain Control Module (PCM): → Shop Transmission Assembly This is very rare and should only be considered after all other possibilities, including the solenoid pack, fluid, and wiring, have been thoroughly ruled out. Sometimes a software update (flash) is available which can address certain transmission behaviors, but it will not fix failed hardware.
• Internal Mechanical Transmission Failure: → Shop Transmission Assembly A blockage in a hydraulic passage, a leak in a clutch pack, or a failing hydraulic pump could cause a pressure rationality code, but this would typically be accompanied by more severe symptoms like slipping, grinding noises, or multiple gear ratio error codes.

Diagnosis Steps

1. Check the transmission fluid level and condition. Address any low or dirty fluid first. Ensure only Mopar ATF+4 or a licensed equivalent is used.
2. Use a professional scan tool to check for other transmission-related codes.
3. Monitor the live data from all transmission pressure sensors (L/R, 2/4, OD, UD). Observe the voltage reading from the 2/4 sensor (which corresponds to code P0846) during shifts and compare it to the others. The switch should read high (+12V) when open and close to ground (0V) when pressure is applied.
4. Inspect the main transmission wiring harness and connector for any visible damage, corrosion, or loose connections.
5. Perform a resistance check on the solenoid pack connector. Check between pin 10 (power) and the corresponding pin for the 2/4 pressure switch resistor. The reading should be approximately 300 ohms.
6. Test the (T47) 2/4 Pressure Signal circuit for continuity between the PCM and the transmission connector. Resistance should be less than 5.0 ohms. Also check for a short to ground (should be open) and a short to voltage (should be less than 0.5V).
7. If fluid and wiring are good, but the sensor 'B' reading is erratic or resistance tests fail, the next step is to replace the solenoid pack.
8. Drain the transmission fluid and remove the transmission pan.
9. Visually inspect the valve body, solenoid pack, and internal wiring.
10. Replace the transmission pressure switch assembly (solenoid pack).
11. Install a new transmission pan gasket and filter, reinstall the pan, and refill with the manufacturer-specified transmission fluid (Mopar ATF+4).
12. Clear the codes and perform a transmission quick-learn procedure with a capable scan tool (like wiTECH).
13. Perform a test drive to confirm the repair.

Parts You'll Likely Need

• Transmission Pressure Sensor & Governor Solenoid Kit (Solenoid Pack) (OEM #5078709AB, 68376696AA) — This assembly contains the pressure sensors that commonly fail and trigger code P0846 on the 62TE transmission.
  Trusted brands: Mopar, Dorman, ATP, Sonnax (offers upgrade kits)
  OEM price range: $250-$400
  Aftermarket price range: $150-$250
• Automatic Transmission Fluid (ATF+4) (OEM #68218057AB (or equivalent licensed ATF+4)) — The transmission fluid must be drained to perform the repair and should be replaced with new, correct fluid. Using non-licensed fluid can cause shifting problems.
  Trusted brands: Mopar, Valvoline, Castrol
  OEM price range: $10-$15 per quart
  Aftermarket price range: $8-$12 per quart
• Transmission Pan Gasket and Filter Kit — The old gasket should not be reused, and the filter should always be changed when the pan is dropped.
  Trusted brands: Fel-Pro, Mahle, Mopar, Wix
  OEM price range: $30-$50
  Aftermarket price range: $20-$40

Related Codes That Often Appear With This One

• P0841 — This is a similar code for the 'A' (L/R) pressure sensor circuit. When multiple pressure sensor codes appear, it points more strongly to a faulty solenoid pack, a widespread electrical issue, or a fluid pressure problem.
• P0871 — This code relates to the 'D' (OD) pressure sensor circuit. Seeing it with P0846 suggests a problem with the pressure switch assembly or fluid pressure in general.
• P083B — Another pressure switch rationality code ('A' circuit) for the 62TE transmission. Multiple rationality codes are a very strong indicator of a failing pressure switch assembly.
• P0732 — This code means 'Gear 2 Incorrect Ratio'. If the TCM commands a shift but the 2/4 pressure switch doesn't confirm it, the TCM may also flag a gear ratio error. Seeing these together can indicate the transmission is failing to execute shifts properly.

Technical Service Bulletins (TSBs) & Recalls

• TSB 21-013-12: This TSB supersedes 21-008-12 and involves a flash reprogramming of the Powertrain Control Module (PCM) for the 3.6L engine with the 62TE transmission. While it addresses several drivability issues and offers an 'Enhanced Pedal' software option for better throttle response, it is not a direct fix for a failed pressure sensor but may be relevant if drivability complaints accompany the code.

Platform-Specific Known Issues

• Real Owner Experience with Limp Mode: A user on dodgejourneyforum.com reported their 2011 V6 went into limp mode. After a dealer diagnosis, the fix required a wiring repair for two broken wires between the TCM and PCM, costing around $300. This highlights that while the solenoid pack is common, wiring can also be the culprit.
• Multiple Codes Point to Failure: Another user on dodgejourneyforum.com with an 80k-mile Journey experienced sudden limp mode. The dealer found codes P0846 and P0871, diagnosed a failed solenoid pack, and replaced it to resolve the issue.

Mechanic-Grade Diagnostic Values

• Pressure Switch Resistor Resistance — expected: ~300 Ohms. Failure: An open line (OL) or significantly different reading indicates a failed resistor within the solenoid pack.
• Shift Solenoid Resistance (most solenoids) — expected: ~1.6 - 1.8 Ohms (varies with temperature). Failure: An open line (OL) or a reading significantly different from the other similar solenoids points to a failed solenoid coil.
• Line Pressure Solenoid Resistance — expected: ~4.9 Ohms. Failure: A reading significantly different from 4.9 Ohms suggests a fault in the line pressure control solenoid.
• Signal Circuit Wire Continuity — expected: Below 5.0 Ohms. Failure: Resistance above 5.0 Ohms indicates an open or high resistance in the wire between the PCM/TCM and the transmission.
• Signal Circuit Short to Ground — expected: Open Line (OL) / Infinite Resistance. Failure: Resistance below 5.0 Ohms indicates the signal wire is shorted to ground.
• Signal Circuit Short to Voltage — expected: Below 0.5 Volts. Failure: Voltage above 0.5V indicates the signal wire is shorted to a power source.

Scan Tool Commands That Help

• wiTECH (Chrysler/Dodge Dealer Tool): Transmission Quick Learn — This procedure is required after replacing the solenoid pack or valve body to reset the transmission's adaptive memory cells and ensure proper shift quality.
• wiTECH or equivalent professional scan tool: View Live Data > Transmission > Pressure Switch States — Used to monitor the 2/4 pressure switch (and others) in real-time. The state should change from open/high voltage to closed/low voltage when the 2-4 clutch circuit is pressurized during shifts. An unchanging or irrational state confirms a sensor or circuit fault.
• wiTECH: Flash PCM/TCM — Used to apply software updates as specified in Technical Service Bulletins (TSBs) like 21-012-12 REV A, which can correct harsh shifting logic that may be related to pressure rationality issues.

Wiring & Ground Locations

• T47 Circuit — This is the specific wire for the 2/4 Pressure Signal circuit running between the Powertrain Control Module (PCM) C1 connector and the main transmission solenoid/TRS assembly harness connector.. This wire carries the voltage signal from the pressure switch that triggers P0846. All continuity, short-to-ground, and short-to-voltage tests for this code are performed on this specific circuit.
• Main Battery Ground Stud — Located on the driver's side strut tower. The negative battery cable connects here.. This is the primary grounding point for the entire vehicle. From here, a cable connects to the engine block, and other straps ground the chassis. A poor connection here can cause widespread, unpredictable electrical issues, including faulty sensor readings.
• Engine Block to Chassis Ground — A wire or strap running from the engine block to the vehicle's chassis/frame.. The transmission is grounded through the engine block. If this ground is weak or corroded, the transmission sensors and solenoids may not have a stable ground reference, leading to erratic behavior and codes like P0846.
• Passenger Side Engine Mount Ground — A ground wire connects from a post on the passenger side body, near the ABS module and coolant reservoir, to the engine mount.. Forum users have identified this as a potential source of electrical problems. While not directly tied to the transmission harness, ensuring all engine and chassis grounds are clean and secure is a critical step in diagnosing any electronic fault code.

Real Owner Repair Stories

• YouTube user 'Jugaar' (Dodge/Chrysler with 62TE Transmission) — Pressure switch rationality codes (P083B, P0841, P0846, P0871).
  ❌ Tried (didn't work) Replacing just the solenoid without understanding the root cause.
  ✅ What actually fixed it The user explains that contamination from the torque converter clutch is a primary cause. The fix involves disassembling the solenoid pack, thoroughly cleaning the contacts for the pressure switches, the springs, and the ground plate inside the pack. This restores proper electrical contact, resolving the rationality codes without replacing the entire pack.
• YouTube user 'Factotum Life' (Dodge Grand Caravan with 62TE Transmission (over 242,000 miles)) — Intermittent limp mode with a pending P083B code (another pressure switch rationality code).
  ❌ Tried (didn't work) An initial cleaning of the solenoid pack contacts worked for 21,000 miles before the issue returned.
  ✅ What actually fixed it The owner installed a Sonnax Solenoid Spacer Service Kit (44836-02K), which includes new O-rings for the solenoids, switch cups, and contactor springs. This rebuild of the existing solenoid pack, along with another cleaning and fluid/filter change, provided a more robust and lasting repair, improving shift quality.
• NHTSA ODI #10456949 — An owner reported experiencing P0846 Pressure Switch Rationality alongside multiple gear ratio errors (P0731, P0732, P0734) and P0944 Loss of Pump Prime. Upon inspection, metal was found in the transmission pan, indicating internal mechanical failure.

OEM Part Supersession History

• Multiple older part numbers, including 5078709AA, 68029389AA → 68376696AA — This is the updated, more reliable version of the Mopar solenoid pack for the 62TE transmission.
  Heads up: The newest part number (68376696AA) is the correct direct replacement for all 2009-2019 Dodge Journeys with the 62TE transmission. Using older stock is not recommended as it is more prone to failure.

Model Year Variations Within This Range

• 2011-2013: A specific PCM software update was released via TSB 21-012-12 REV A for vehicles built before September 26, 2012. This flash addresses harsh shifting and clunking which could be misdiagnosed as a hardware issue related to P0846.

Diagnostic Flowchart

Other Known Issues on This Vehicle

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

• Premature Brake and Rotor Wear 🔴 High — Very common, especially on 2009-2012 models. Owners report needing new pads and rotors as early as 12,000-30,000 miles. The issue is often attributed to undersized brake components for the vehicle's weight. (Ref: Dodge extended the warranty for brakes on some early models to 3 years/36,000 miles but did not issue a full recall.)
• Uconnect Infotainment System Failures 🟠 Medium — Widespread reports of the system freezing, rebooting, failing to pair with Bluetooth, or becoming completely unresponsive. Problems can be intermittent or require module replacement. (Ref: Software updates are available but do not always resolve the hardware-related issues.)
• Water Leaks into Cabin 🟠 Medium — Commonly reported issue where water leaks into the cabin, often soaking the floorboards behind the driver's seat or near the rear of the vehicle, typically due to failing door or sunroof seals.
• Engine Oil Consumption (2.4L and 3.6L) 🟠 Medium — Both engines can consume oil. The 2.4L can burn oil with some owners reporting adding a quart every few hundred miles. The 3.6L is known for leaking oil filter adapter housings. Some 2015 models with the 2.4L engine were part of a Customer Satisfaction Notification (S18) for excessive oil consumption that could lead to engine failure. (Ref: Customer Satisfaction Notification S18 for specific 2015 models.)
• Engine Overheating 🔴 High — More common on 2009-2016 models around 78,000 miles, often caused by debris blocking a coolant port in the cylinder head, leading to poor coolant flow.

Used vs. New Parts: Buying Guide for This Vehicle

When a used part is the smart pick: A used solenoid pack from a junkyard is a high-risk choice for this repair. The failure is extremely common and often due to internal wear and contamination that is not visible externally. A used part may fail quickly or be faulty from the start. It only makes sense if the budget is extremely tight and the donor vehicle is known to be very low mileage.

Donor-vehicle mileage cap: roughly under 50000 miles for the part to have meaningful remaining life.

What to inspect on the donor part:

• Verify the donor vehicle's mileage is low.
• Inspect the transmission fluid from the donor vehicle if possible. If it is dark, burnt, or full of debris, avoid the part.
• Check the connector pins for any corrosion, damage, or signs of overheating.
• If possible, perform a resistance check on the pins before purchasing, comparing the readings to known specs (~300 ohms for pressure switch resistors, ~1.6-1.8 ohms for most solenoids).

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

• While not strictly 'OEM-only', using a new Mopar solenoid pack (PN 68376696AA) is the highest probability for a long-term fix due to it being the latest revised part.

Aftermarket brands forum-validated for this vehicle:

• Sonnax: Offers rebuild kits (like 44836-02K) and remanufactured solenoid blocks that are well-regarded for addressing the root cause of failure (internal sealing and contact issues).
• Dorman: A common aftermarket replacement, though quality can sometimes be inconsistent compared to OEM or a Sonnax-rebuilt unit.

Brands owners have reported issues with on this vehicle:

• Unbranded, no-name solenoid packs from online marketplaces should be avoided. They often use inferior internal components that lead to premature failure, sometimes within weeks or months.

Real Owner Stories

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

Related OBD-II Codes

• P0871 — Indicates a fault with the Overdrive (OD) pressure switch. This code frequently appears with P0846 because both the OD and 2/4 switches are located in the same solenoid pack assembly, which is a common failure point.
• P0841 — Corresponds to the Low/Reverse (L/R) pressure switch. Like P0846, this code points to a fault within the integrated solenoid pack/pressure switch assembly, making a pack failure a likely root cause for both.
• P0992 — Relates to the Underdrive (UD) pressure switch. Since all pressure switches (UD, OD, L/R, 2/4) are part of the same component on the 62TE transmission, this code often accompanies P0846 when the entire solenoid pack fails.
• P0732 — Gear 2 Incorrect Ratio. This can be a secondary code triggered when the TCM receives erratic signals from the 2/4 pressure switch (P0846), causing shifting problems that the computer interprets as a gear ratio error.
• P0734 — Gear 4 Incorrect Ratio. The 2/4 pressure switch is critical for monitoring the 4th gear hydraulic circuit. A failure in this switch (P0846) can lead to a failed shift into 4th gear, causing the TCM to log this incorrect ratio code.

Frequently Asked Questions