Engine-CodesGeneric – P0844

P0844 Code - Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent

Quick Answer

The P0844 diagnostic trouble code (DTC) refers to an issue with the Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent. Common causes include Faulty transmission fluid pressure sensor or switch, Damaged wiring or connectors in the sensor circuit, 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
P0844 indicates Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent.
Common causes
Common causes include Faulty transmission fluid pressure sensor or switch, Damaged wiring or connectors in the sensor circuit, 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.
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P0844 Description

The P0844 diagnostic trouble code (DTC) refers to an issue with the Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent. This code indicates that there is a problem with the transmission fluid pressure sensor or switch, which is responsible for monitoring the fluid pressure within the transmission system. The sensor sends signals to the vehicle's onboard computer to ensure that the transmission operates smoothly and efficiently.

OBDII Code P0844 - Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent
P0844 Code - Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent

Common Causes of P0844

  1. Faulty transmission fluid pressure sensor or switch
  2. Damaged wiring or connectors in the sensor circuit
  3. Low transmission fluid levels
  4. Malfunctioning transmission control module
  5. Internal transmission issues

Symptoms of P0844

  1. Erratic or harsh shifting
  2. Transmission slipping
  3. Delayed engagement when shifting gears
  4. Illuminated check engine light
  5. Transmission overheating

How to Fix P0844

  1. Begin by diagnosing the specific cause of the P0844 code using a scan tool to read the transmission fluid pressure sensor data.
  2. Inspect the wiring and connectors in the sensor circuit for any damage or corrosion, repairing or replacing as needed.
  3. Check the transmission fluid level and condition, topping off or replacing the fluid if necessary.
  4. Test the transmission fluid pressure sensor or switch for proper operation, replacing it if found to be faulty.
  5. Clear the DTC and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0844

The typical repair costs for addressing a P0844 code can vary depending on the specific cause of the issue. In general, replacing a faulty transmission fluid pressure sensor or switch can cost between $150 and $300, including parts and labor. Additional costs may be incurred if wiring repairs or transmission fluid replacement are necessary. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your vehicle make and model.

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Code P0844 Information for Specific Makes

  • P0844 Dodge — Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent
  • P0844 Mercedes-Benz — Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent
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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