P0849

Transmission Fluid Pressure Sensor/Switch B Circuit Intermittent

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Incorrect gear shifting
Switching delays
Jerks or jolts when moving
Check Engine Light Illuminates
Activating transmission emergency mode

Causes

Transmission fluid pressure sensor malfunction
Open or short circuit in the sensor circuit
Oxidized or damaged connector pins
Low transmission fluid level
Contaminated transmission fluid

How to Fix

Check the level and condition of the transmission fluid
Visually inspect the sensor wiring harness and connectors
Check the resistance and voltage in the sensor circuit
Replace transmission fluid pressure sensor if necessary
Clean the connector contacts and replace damaged wires

Related codes

P0847 P0848 P0850