P07B4

Transmission Park Position Sensor/Switch A Circuit High

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Problems starting the engine
Incorrect display of selector position on the instrument panel
The car may not recognize the parking mode
Possible problems with removing the ignition key

Causes

Open or short circuit in the sensor circuit
Malfunction of the parking position sensor itself
Problems with the sensor connector (oxidation, damage)
Malfunction of the automatic transmission control unit
Damage to the wiring harness near the sensor

How to Fix

Check the integrity of the wiring to the sensor
Inspect the sensor connector for damage
Check sensor resistance (compare with factory values)
Replace the parking position sensor if necessary
Check the operation of the automatic transmission control unit

Related codes

P07B5 P07B3 P0705