Engine-CodesDodge – P0847 Dodge

P0847 Dodge Code - Transmission Fluid Pressure Sensor/Switch 'B' Circuit Low

Quick Answer

The P0847 diagnostic trouble code for Dodge vehicles indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'B' Circuit. Common causes include Faulty Transmission Fluid Pressure Sensor/Switch 'B', Damaged wiring or connectors in the sensor circuit, Low transmission fluid levels or contaminated fluid. 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
P0847 Dodge indicates Transmission Fluid Pressure Sensor/Switch 'B' Circuit Low.
Common causes
Common causes include Faulty Transmission Fluid Pressure Sensor/Switch 'B', Damaged wiring or connectors in the sensor circuit, Low transmission fluid levels or contaminated fluid.
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 P0847 Dodge Description

The P0847 diagnostic trouble code for Dodge vehicles indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'B' Circuit. This sensor is responsible for monitoring the hydraulic pressure within the transmission system and sending this information to the vehicle's engine control module. The 'B' circuit refers to a specific part of the sensor's circuitry that is reporting a low voltage or signal, indicating a potential issue with the sensor's operation.

OBDII Code P0847 Dodge - Transmission Fluid Pressure Sensor/Switch 'B' Circuit Low
P0847 Dodge Code - Transmission Fluid Pressure Sensor/Switch 'B' Circuit Low

Common Causes of P0847 Dodge

  1. Faulty Transmission Fluid Pressure Sensor/Switch 'B'.
  2. Damaged wiring or connectors in the sensor circuit.
  3. Low transmission fluid levels or contaminated fluid.
  4. Internal transmission issues affecting pressure readings.
  5. Electronic control module malfunction affecting sensor operation.

Symptoms of P0847 Dodge

  1. Erratic shifting behavior, such as harsh engagements or delayed gear changes.
  2. Transmission slipping or overheating.
  3. Illumination of the Check Engine Light on the dashboard.
  4. Reduced fuel efficiency due to inefficient transmission operation.
  5. Transmission going into limp mode, restricting performance.

How to Fix P0847 Dodge

  1. Diagnosis: Use a scan tool to read the fault codes and perform a thorough inspection of the transmission fluid pressure sensor, wiring, and connectors.
  2. Replace Sensor: If the sensor is found to be faulty, replace it with a new OEM or aftermarket sensor.
  3. Check Wiring: Inspect the wiring harness and connectors for any damage or corrosion, repairing or replacing as necessary.
  4. Verify Fluid Levels: Ensure the transmission fluid levels are correct and the fluid is in good condition. Top up or flush and replace the fluid if needed.
  5. Clear Codes: Clear the fault codes from the engine control module's memory and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P0847 Dodge

The cost of repairing a Transmission Fluid Pressure Sensor/Switch 'B' Circuit Low issue can vary depending on the specific components that need to be replaced or repaired. Typically, the cost of a new sensor can range from $50 to $150, while labor costs can range from $100 to $300 depending on the shop's hourly rates and the complexity of the repair. In total, the repair cost for this issue could range from $150 to $450, excluding any additional diagnostics or parts that may be required. It's important to note that prices can vary based on the vehicle's make and model, as well as the location and type of repair shop. It's recommended to obtain multiple quotes and compare prices before proceeding with the repair.

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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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