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P0871 Dodge Code - OD Pressure Switch Rationality Fault

Quick Answer

The P0871 diagnostic trouble code (DTC) for Dodge vehicles refers to an "OD Pressure Switch Rationality Fault." This code typically indicates a problem with the overdrive pressure switch in the transmission system. Common causes include Faulty OD pressure switch, Wiring or electrical issues, Low transmission fluid levels. 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
P0871 Dodge indicates OD Pressure Switch Rationality Fault.
Common causes
Common causes include Faulty OD pressure switch, Wiring or electrical issues, Low transmission fluid levels.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P0871 Dodge Description

The P0871 diagnostic trouble code (DTC) for Dodge vehicles refers to an "OD Pressure Switch Rationality Fault." This code typically indicates a problem with the overdrive pressure switch in the transmission system. The overdrive pressure switch plays a crucial role in controlling the transmission's hydraulic pressure, which in turn affects gear shifting and overall performance.

OBDII Code P0871 Dodge - OD Pressure Switch Rationality Fault
P0871 Dodge Code - OD Pressure Switch Rationality Fault

Common Causes of P0871 Dodge

  1. Faulty OD pressure switch
  2. Wiring or electrical issues
  3. Low transmission fluid levels
  4. Transmission fluid contamination
  5. Mechanical problems within the transmission system

Symptoms of P0871 Dodge

  1. Erratic shifting behavior
  2. Harsh or delayed gear changes
  3. Slipping gears
  4. Reduced fuel efficiency
  5. Illuminated check engine light

How to Fix P0871 Dodge

  1. Diagnose the issue using a diagnostic scanner to confirm the P0871 code and identify the specific cause.
  2. Inspect the OD pressure switch and wiring for any visible damage or wear.
  3. Check transmission fluid levels and quality, topping up or replacing if necessary.
  4. Test the transmission system for any mechanical issues that may be contributing to the problem.
  5. Replace the faulty OD pressure switch or repair any wiring or electrical issues as needed.

Cost to Fix P0871 Dodge

The typical repair costs for addressing a P0871 code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, replacing the OD pressure switch and addressing any related wiring or fluid issues can range from $200 to $500. However, it's important to note that labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. Additional costs for diagnostic testing and any necessary transmission fluid or parts should also be factored into the overall repair estimate. It's advisable to consult with a trusted mechanic or auto repair shop for a more accurate cost assessment based on your vehicle's make and model.

What does this mean?

Tech Notes for P0871 Dodge

There is a factory service bulletin for the following Dodge models:
2004 Dodge Dakota
2004 Dodge Durango
2005 Dodge Durango
2005 Dodge 300
2005 Dodge Magnum
2005 Dodge Dakota
Dodge Factory Service Bulletin OBDII Code P0871

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Need more information on how to fix the P0871 Dodge code? Get Access to Factory Service Manuals

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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.

Frequently Asked Questions about P0871 Dodge Code

1. What is OBDII code P0871 in a Dodge vehicle?

- OBDII code P0871 in a Dodge indicates a transmission OD Pressure Switch Rationality Fault.

2. What are the common symptoms of OBDII code P0871 in a Dodge?

- Common symptoms include harsh shifting, transmission slippage, decreased fuel efficiency, and the transmission going into limp mode.

3. What are the possible causes of OBDII code P0871 in a Dodge?

- The code may be triggered by issues such as a faulty OD pressure switch, low transmission fluid level, damaged wiring or connectors, or a malfunctioning transmission control module.

4. How can I diagnose OBDII code P0871 in my Dodge?

- Diagnosing the code involves using a scan tool to retrieve the fault codes, checking the transmission fluid level and condition, inspecting for any visible damage to wiring or connectors, and testing the OD pressure switch.

5. How can I repair OBDII code P0871 in my Dodge?

- Repair options typically include replacing the faulty OD pressure switch, repairing any damaged wiring or connectors, ensuring the transmission fluid is at the correct level, and resetting the fault codes.

6. Can I continue driving my Dodge with OBDII code P0871?

- It is not recommended to continue driving with this code present, as it can lead to further transmission damage and potentially unsafe driving conditions.

7. How much does it cost to repair OBDII code P0871 in a Dodge?

- The cost of repairs can vary depending on the exact cause of the code and the required parts and labor. It is advisable to get a diagnostic done by a professional to get an accurate estimate.

8. Can I reset OBDII code P0871 in my Dodge without fixing the issue?

- While you can reset the code using a scan tool, it is important to address the underlying problem causing the fault code to prevent further transmission issues.

9. Will OBDII code P0871 cause my Dodge to fail an emissions test?

- Yes, OBDII code P0871 can cause your Dodge to fail an emissions test, as it indicates a problem with the transmission system that can affect emissions.

10. How can I prevent OBDII code P0871 from occurring in my Dodge?

- Regular maintenance, such as checking and changing transmission fluid as recommended, inspecting wiring and connectors for damage, and addressing any transmission issues promptly, can help prevent OBDII code P0871 from occurring.

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