Transmission Fluid Pressure Sensor/Switch B Circuit

Where it lives

For P0845, the sensor sits on the circuit this code reports. The description of P0845 reports a fault at the sensor.

Check these first

• A failed transmission fluid pressure sensor B
• An open or short in the sensor B wiring
• Corrosion at the sensor B connector
• Low or dirty transmission fluid
• A poor sensor B ground

What to do next

1. Check the transmission fluid level and condition
2. Read sensor B pressure on a scan tool
3. Test the sensor B wiring for an open or short
4. Check the sensor B ground
5. Replace the sensor if the reading is fixed
6. Clear the code and retest

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