P07B8

Transmission Park Position Sensor/Switch B Circuit/Open

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
The gearbox goes into emergency mode
Gear shifting problems
Inability to start the car (in some models)
Incorrect display of selector position on the instrument panel

Causes

Open or short circuit in the sensor circuit
Parking position sensor B malfunction
Oxidation or damage to contacts in the connector
Wiring harness damage
Transmission control module (TCM) problems

How to Fix

Check the integrity of the sensor wiring and connectors
Check sensor resistance according to specification
Clean contacts from oxidation and corrosion
Replace a faulty parking position sensor
Check the operation of the transmission control unit

Related codes

P07B7 P07B9 P0705