P0729
Powertrain Codes
P0729 - INFINITI - Automatic Transmission 6th Gear Incorrect Ratio
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light) - Transmission will not shift into 6th gear
Possible Causes
- Low fluid level - Shift solenoid mechanical fault - Hydraulic circuit fault - Transmission failure
Description
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.