Engine-CodesChrysler – P1781 Chrysler

P1781 Chrysler Code - Over Drive Pressure Switch Sense Circuit

Quick Answer

The P1781 Chrysler code refers to an issue with the Over Drive Pressure Switch Sense Circuit in the vehicle's transmission system. Common causes include Faulty overdrive pressure switch, Wiring issues in the Over Drive Pressure Switch Sense Circuit, Malfunction in the transmission control module. 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 Chrysler indicates Over Drive Pressure Switch Sense Circuit.
Common causes
Common causes include Faulty overdrive pressure switch, Wiring issues in the Over Drive Pressure Switch Sense Circuit, Malfunction in the transmission control module.
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.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P1781 Chrysler Description

The P1781 Chrysler code refers to an issue with the Over Drive Pressure Switch Sense Circuit in the vehicle's transmission system. This code indicates that there is a malfunction or a fault in the circuit that is responsible for monitoring the pressure in the overdrive system. The overdrive system is a crucial component of the transmission that allows the vehicle to achieve higher speeds while maintaining fuel efficiency by reducing the engine's RPM.

OBDII Code P1781 Chrysler - Over Drive Pressure Switch Sense Circuit
P1781 Chrysler Code - Over Drive Pressure Switch Sense Circuit

Common Causes of P1781 Chrysler

  1. Faulty overdrive pressure switch
  2. Wiring issues in the Over Drive Pressure Switch Sense Circuit
  3. Malfunction in the transmission control module
  4. Low transmission fluid levels
  5. Internal transmission damage

Symptoms of P1781 Chrysler

  1. Difficulty shifting gears
  2. Vehicle not staying in overdrive mode
  3. Poor fuel economy
  4. Reduced acceleration
  5. Illumination of the Check Engine Light

How to Fix P1781 Chrysler

  1. Diagnose the issue by using a scan tool to retrieve the fault code and inspecting the overdrive pressure switch and wiring.
  2. Replace the faulty overdrive pressure switch if necessary.
  3. Repair any damaged wiring in the Over Drive Pressure Switch Sense Circuit.
  4. Check and refill transmission fluid levels.
  5. Reset the fault code and test drive the vehicle to ensure the issue is resolved.

Cost to Fix P1781 Chrysler

The typical repair costs for addressing the P1781 Chrysler code can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It is important to note that the diagnosis time and labor rates at auto repair shops can vary, so it is recommended to check with local shops for a more accurate estimate. The rates can range between $80 and $150 per hour, with dealership rates potentially being higher and independent shops generally charging less.

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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.

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