P0843
Transmission Fluid Pressure Sensor/Switch A Circuit High
P0843 is an OBD-II diagnostic trouble code meaning: Transmission Fluid Pressure Sensor/Switch A Circuit High. Common causes: transmission fluid pressure sensor malfunction, open or short circuit in the electrical circuit. Estimated repair cost: $17–56.
Symptoms
- Incorrect gear shifting
- Delays when shifting gears
- Transition to emergency mode of operation of the transmission
- Check Engine light comes on
- Reduced transmission efficiency
Causes
- Transmission fluid pressure sensor malfunction
- Open or short circuit in the electrical circuit
- Poor contact in sensor connectors
- Transmission control module (TCM) malfunction
- Low transmission fluid level
How to Fix
- Check the level and condition of the transmission fluid
- Inspect the electrical circuit of the sensor for damage
- Check sensor connectors for corrosion or poor contact.
- Test the transmission fluid pressure sensor
- If necessary, replace the sensor or repair the circuit
Related codes
Error P0843 by Vehicle Brand
FAQ
What does the P0843 code mean?
P0843 is an OBD-II diagnostic trouble code that indicates: Transmission Fluid Pressure Sensor/Switch A Circuit High
What causes a P0843 error code?
The most common causes of P0843 include: Transmission fluid pressure sensor malfunction; Open or short circuit in the electrical circuit; Poor contact in sensor connectors; Transmission control module (TCM) malfunction.
How do I fix a P0843 diagnostic trouble code?
To fix P0843: Check the level and condition of the transmission fluid. Inspect the electrical circuit of the sensor for damage. Check sensor connectors for corrosion or poor contact.. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0843?
Limited driving only, diagnose soon
How much does it cost to fix P0843?
The estimated repair cost for P0843 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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