P0842
Transmission Fluid Pressure Sensor/Switch A Circuit Low
P0842 is an OBD-II diagnostic trouble code meaning: Transmission Fluid Pressure Sensor/Switch A Circuit Low. Common causes: transmission fluid pressure sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Incorrect gear shifting
- Delays when shifting gears
- Jerking when moving
- Check Engine light comes on
- Switching to emergency mode of the gearbox
Causes
- Transmission fluid pressure sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in sensor connectors
- Low transmission fluid level
- Transmission control module (TCM) malfunction
How to Fix
- Check the transmission fluid level and add if necessary
- Visually inspect the sensor circuit for damage
- Check resistance and voltage at pressure sensor
- Replace transmission fluid pressure sensor if necessary
- Check the operation of the transmission control module (TCM)
Related codes
Error P0842 by Vehicle Brand
FAQ
What does the P0842 code mean?
P0842 is an OBD-II diagnostic trouble code that indicates: Transmission Fluid Pressure Sensor/Switch A Circuit Low
What causes a P0842 error code?
The most common causes of P0842 include: Transmission fluid pressure sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in sensor connectors; Low transmission fluid level.
How do I fix a P0842 diagnostic trouble code?
To fix P0842: Check the transmission fluid level and add if necessary. Visually inspect the sensor circuit for damage. Check resistance and voltage at pressure sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0842?
Limited driving only, diagnose soon
How much does it cost to fix P0842?
The estimated repair cost for P0842 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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