AutoCodes – Jeep – P0846 Jeep

P0846 Jeep Code - 2-4 or 2C Pressure Switch Rationality

Quick Answer

The Powertrain Control Module (PCM) uses three pressure switches to monitor the fluid pressure in the LR, 2/4, and OD clutch circuits. Common causes include 2/4 Pressure Switch harness is open or shorted, 2/4 Pressure Switch circuit poor electrical connection, Faulty 2/4 Pressure Switch. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0846 Jeep indicates 2-4 or 2C Pressure Switch Rationality.
Common causes: Common causes include 2/4 Pressure Switch harness is open or shorted, 2/4 Pressure Switch circuit poor electrical connection, Faulty 2/4 Pressure Switch.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 32,337

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 01, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P0846 Jeep Description

The Powertrain Control Module (PCM) uses three pressure switches to monitor the fluid pressure in the LR, 2/4, and OD clutch circuits. The pressure switches are continuously monitored for the correct states in each gear as shown below. This Diagnostic Trouble Code (DTC) is set if the 2/4 pressure switch is open or closed at the wrong time in a given gear.

OBDII Code P0846 Jeep - 2-4 or 2C Pressure Switch Rationality - AutoCodes.com — P0846 Jeep Code - 2-4 or 2C Pressure Switch Rationality

What does this mean?

What are the Possible Causes of the DTC P0846 Jeep?

2/4 Pressure Switch harness is open or shorted
2/4 Pressure Switch circuit poor electrical connection
Faulty 2/4 Pressure Switch
Internal transmission damage
Faulty Powertrain Control Module (PCM)
Faulty Transmission Control Module (TCM)

How to Fix the DTC P0846 Jeep?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

There is a factory service bulletin for the following Jeep models:
2003-2005 Jeep Wrangler
2003-2005 Jeep Liberty
2003-2005 Jeep Cherokee
Jeep Factory Service Bulletin OBDII Code P0846

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0846 Jeep code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0846 Jeep code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.