P0709

Transmission Range Sensor A Circuit Intermittent

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Incorrect display of gear selector position on the instrument panel
The car goes into emergency transmission mode
Difficulty shifting gears
Inability to start the engine in some selector positions
Flashing check engine or transmission light

Causes

Damage to the range sensor wiring harness
Oxidation or poor contact in sensor connectors
Malfunction of the gear range sensor itself
Sensor circuit grounding problems
Mechanical damage to the sensor or its drive mechanism

How to Fix

Check the integrity of the sensor wiring harness
Clean and check the contacts in the sensor connectors
Check the resistance and signal of the sensor with a multimeter
If necessary, replace the gear range sensor
Check and, if necessary, restore circuit grounding

Related codes

P0705 P0706 P0708