OBD Code P0729

Gear 6 Incorrect Ratio

What’s mean?

OBD2 Code P0729 Definition:
This malfunction is detected when the A/T does not shift into 6GR position as instructed by TCM. This is not only caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction such as control valve sticking, improper solenoid valve operation, etc.

Symptoms

Possible sumptoms of P0729
– Engine Light ON (or Service Engine Soon Warning Light) – Transmission will not shift into 6th gear

Possible Causes

Possible causes of P0729
– Low fluid level – Shift solenoid mechanical fault – Hydraulic circuit fault – Transmission failure

Possible Solutions