P0847

Transmission Fluid Pressure Sensor/Switch B Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Incorrect gear shifting
Transmission transition to emergency mode
Check Engine Light Illuminates
Reduced transmission efficiency
Possible jerking when changing gears

Causes

Transmission fluid pressure sensor B malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Low transmission fluid level
Transmission control module (TCM) malfunction

How to Fix

Check transmission fluid level
Inspect the sensor wiring harness and connectors for damage.
Check the resistance and signal of the pressure sensor
Replace transmission fluid pressure sensor if necessary
Check the operation of the transmission control unit

Related codes

P0846 P0848 P0849