What are the common causes of P0709?

An intermittent range sensor. A loose range sensor connector. Chafed range sensor wiring. A failing TCM. Low battery voltage.

Watch the range sensor signal for dropouts. Wiggle test the connector and harness. Inspect the wiring for chafing. Check battery voltage. Replace the range sensor. Clear the code and retest.

P0709

Transmission Range Sensor A Circuit Intermittent

System: Transmission (P code)
Lamp: Check Engine Light
Category: Powertrain - Transmission

What it means

P0709 means Transmission Range Sensor A Circuit Intermittent.

Where it lives

For P0709, the circuit described runs through the sensor. The description of P0709 reports a fault at the sensor.

Check these first

An intermittent range sensor
A loose range sensor connector
Chafed range sensor wiring
A failing TCM
Low battery voltage

What to do next

Watch the range sensor signal for dropouts
Wiggle test the connector and harness
Inspect the wiring for chafing
Check battery voltage
Replace the range sensor
Clear the code and retest

Look up another code

Code or symptom

Enter a full code or a symptom. Press / to search. How to read a code

Type a code above, or start from a symptom or a common code.

Updated

Generic SAE J2012 definition. Last updated 2026-10-10.