AutoCodes – Jeep – P1781 Jeep

P1781 Jeep Code - Over Drive Pressure Switch Sense Circuit

Quick Answer

Over Drive (OD). Common causes include Faulty Pressure Switch, Faulty Over Drive Pressure Switch, Over Drive Pressure Switch harness is open or shorted. 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: P1781 Jeep indicates Over Drive Pressure Switch Sense Circuit.
Common causes: Common causes include Faulty Pressure Switch, Faulty Over Drive Pressure Switch, Over Drive Pressure Switch harness is open or shorted.
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 17,432

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 Sep 18, 2019

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
Comments
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Code P1781 Jeep Description

Over Drive (OD).
The P1781 code is set when one of the pressure switches are open or closed at the wrong time in a given gear.

OBDII Code P1781 Jeep - Over Drive Pressure Switch Sense Circuit - AutoCodes.com — P1781 Jeep Code - Over Drive Pressure Switch Sense Circuit

What does this mean?

What are the Possible Causes of the DTC P1781 Jeep?

Faulty Pressure Switch
Faulty Over Drive Pressure Switch
Over Drive Pressure Switch harness is open or shorted
Over Drive Pressure Switch circuit poor electrical conection

How to Fix the DTC P1781 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

Solenoid Pack Replacement Jeep Grand Cherokee 45RFE P1781 Fix P0700

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1781 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.

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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.