The P0844 trouble code indicates that there’s an intermittent malfunction in the transmission fluid pressure sensor or switch “A” circuit.
P0844 Transmission Fluid Pressure Sensor/Switch “A” Circuit Intermittent
Code symptoms P0844.
1. Difficulty shifting gears.
2. Transmission slipping or jerking during gear changes.
3. Overheating of the transmission.
4. Illumination of the Check Engine Light (CEL) or Malfunction Indicator Lamp (MIL) on the dashboard.
Causes of the code P0844.
1. Faulty transmission fluid pressure sensor or switch.
2. Loose or corroded wiring or connectors in the sensor circuit.
3. Intermittent short circuits in the sensor circuit.
4. Wiring harness issues, such as chafing or rubbing against other components.
5. Internal transmission problems.
6. Faulty transmission control module (TCM).
Code Solutions P0844.
1. Replace the transmission fluid pressure sensor or switch if it’s found to be faulty.
2. Repair or replace any damaged wiring or connectors in the sensor circuit.
3. Secure and insulate any wiring harness issues to prevent chafing or rubbing.
4. Check and adjust the transmission fluid level if it’s too high.
5. Address any internal transmission issues if detected.
6. Check and, if necessary, replace the transmission control module (TCM) if other issues are ruled out.