P2804

Transmission Range Sensor B Circuit Intermittent

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Incorrect gear shifting
Check Engine Light Illuminates
The car may not start
The gearbox may go into emergency mode
Floating engine speed

Causes

Gear Range Sensor B Malfunction
Open or short circuit in the sensor circuit
Oxidation or damage to contacts in connectors
Low or contaminated transmission fluid
Problems with the transmission control unit

How to Fix

Check the level and condition of the transmission fluid
Visually inspect the sensor wiring and connectors
Check the resistance and voltage at the sensor
Replace range sensor B if necessary
Reset the error and check the operation of the automatic transmission

Related codes

P2800 P2805 P2806