P0845
Transmission Fluid Pressure Sensor/Switch B Circuit
P0845 is an OBD-II diagnostic trouble code meaning: Transmission Fluid Pressure Sensor/Switch B Circuit. Common causes: transmission fluid pressure sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Hard or abrupt gear shifts
- Gear slip
- Transmission transition to emergency mode
- Check Engine light comes on
- Reduced transmission efficiency
Causes
- Transmission fluid pressure sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Contaminated or low transmission fluid level
- Transmission control module (TCM) malfunction
How to Fix
- Check the level and condition of the transmission fluid
- Inspect the connector and wiring of the pressure sensor
- Check sensor resistance and reference voltage
- Replace transmission fluid pressure sensor if necessary
- Check the operation of the transmission control unit
Related codes
Error P0845 by Vehicle Brand
FAQ
What does the P0845 code mean?
P0845 is an OBD-II diagnostic trouble code that indicates: Transmission Fluid Pressure Sensor/Switch B Circuit
What causes a P0845 error code?
The most common causes of P0845 include: Transmission fluid pressure sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Contaminated or low transmission fluid level.
How do I fix a P0845 diagnostic trouble code?
To fix P0845: Check the level and condition of the transmission fluid. Inspect the connector and wiring of the pressure sensor. Check sensor resistance and reference voltage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0845?
Yes, but get it checked soon
How much does it cost to fix P0845?
The estimated repair cost for P0845 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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