Engine-CodesDodge – P0879 Dodge

P0879 Dodge Code - Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent

Quick Answer

The P0879 diagnostic trouble code (DTC) for Dodge vehicles indicates an issue with the Transmission Fluid Pressure Sensor/Switch 'D' Circuit being intermittent. Common causes include Faulty Transmission Fluid Pressure Sensor/Switch 'D', Damaged or corroded wiring/connectors in the sensor circuit, Issues with the ECM/TCM receiving and interpreting sensor signals. 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
P0879 Dodge indicates Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent.
Common causes
Common causes include Faulty Transmission Fluid Pressure Sensor/Switch 'D', Damaged or corroded wiring/connectors in the sensor circuit, Issues with the ECM/TCM receiving and interpreting sensor signals.
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 11, 2024
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Code P0879 Dodge Description

The P0879 diagnostic trouble code (DTC) for Dodge vehicles indicates an issue with the Transmission Fluid Pressure Sensor/Switch 'D' Circuit being intermittent. This sensor is responsible for monitoring the fluid pressure within the transmission system and providing this information to the vehicle's engine control module (ECM) or transmission control module (TCM). The ECM/TCM uses this data to ensure smooth shifting of gears and optimal performance of the transmission.

OBDII Code P0879 Dodge - Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent
P0879 Dodge Code - Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent

Common Causes of P0879 Dodge

  1. Faulty Transmission Fluid Pressure Sensor/Switch 'D'
  2. Damaged or corroded wiring/connectors in the sensor circuit
  3. Issues with the ECM/TCM receiving and interpreting sensor signals
  4. Low transmission fluid levels or contaminated fluid affecting sensor readings
  5. Electrical issues, such as a blown fuse or relay in the sensor circuit

Symptoms of P0879 Dodge

  1. Erratic shifting behavior, such as harsh or delayed gear changes
  2. Transmission slipping or jerking during acceleration
  3. Illumination of the check engine light
  4. Reduced fuel efficiency
  5. Transmission warning messages or codes displayed on the vehicle's dashboard

How to Fix P0879 Dodge

  1. Begin by diagnosing the specific cause of the intermittent Transmission Fluid Pressure Sensor/Switch 'D' Circuit issue using a diagnostic scanner to retrieve and analyze the code.
  2. Inspect the sensor, wiring, and connectors for any visible damage or corrosion. Replace the sensor if faulty and repair any damaged wiring or connectors.
  3. Check and top up the transmission fluid level if necessary, ensuring it is at the correct level and in good condition.
  4. Clear the DTC from the vehicle's ECM/TCM memory using the diagnostic scanner and test drive the vehicle to confirm that the issue has been resolved.
  5. If the problem persists, further diagnostic tests may be needed to identify any underlying issues with the ECM/TCM or other components in the transmission system.

Cost to Fix P0879 Dodge

The typical repair costs for addressing a P0879 DTC related to the Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent issue can vary depending on the specific cause of the problem and the components that require replacement. In general, the cost of replacing the sensor itself can range from $100 to $200, while labor costs can add an additional $100 to $200. Overall, the total repair cost for this issue may range from $200 to $400, excluding any additional diagnostic or testing fees.

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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 P0879 Dodge Code

1. What are the common symptoms of OBDII code P0879 in a Dodge vehicle?

Common symptoms include erratic shifting, harsh shifting, transmission slipping, and illuminated Check Engine Light.

2. What can cause the OBDII code P0879 in a Dodge related to the Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent?

Potential causes include a faulty transmission fluid pressure sensor/switch, wiring issues, low transmission fluid levels, or a malfunctioning transmission control module.

3. How can I diagnose the OBDII code P0879 in a Dodge related to the Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent?

Diagnosis typically involves using a scan tool to read the trouble codes, performing a visual inspection of the sensor and wiring, checking transmission fluid levels, and conducting further testing if needed.

4. What are the repair options for fixing OBDII code P0879 in a Dodge related to the Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent?

Repair options may include replacing the transmission fluid pressure sensor/switch, repairing or replacing damaged wiring, topping up transmission fluid, or reprogramming the transmission control module.

5. Can I continue driving my Dodge with OBDII code P0879 related to the Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent?

It is not recommended to continue driving the vehicle with this code present, as it can lead to further transmission damage and potential safety issues. It is best to address the issue promptly.

6. How much does it typically cost to repair OBDII code P0879 in a Dodge related to the Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent?

The cost of repair can vary depending on the exact cause of the issue, but it may range from $200 to $500 for parts and labor.

7. Are there any preventive maintenance tips to avoid encountering OBDII code P0879 in a Dodge related to the Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent?

Regularly checking and maintaining proper transmission fluid levels, addressing any transmission issues promptly, and following the manufacturer's recommended maintenance schedule can help prevent this code from appearing.

8. How urgent is it to address OBDII code P0879 in a Dodge related to the Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent?

It is important to address this code as soon as possible to prevent further damage to the transmission and ensure the safe operation of the vehicle.

9. Can a DIY enthusiast fix OBDII code P0879 in a Dodge related to the Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent?

While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing this code may require specialized tools and knowledge, so it is recommended to consult a professional mechanic.

10. How long does it take to repair OBDII code P0879 in a Dodge related to the Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent?

The repair time can vary depending on the exact cause of the issue and the extent of the repairs needed, but it may take a few hours to a full day to complete the repair.

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