P0729 Infiniti Code - Automatic Transmission 6th Gear Incorrect Ratio
Quick Answer
The P0729 Infiniti code indicates that there is an issue with the automatic transmission's 6th gear incorrect ratio. Common causes include Faulty transmission sensors, Damaged wiring or connectors, Low transmission fluid levels. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0729 Infiniti indicates Automatic Transmission 6th Gear Incorrect Ratio.
- Common causes
- Common causes include Faulty transmission sensors, Damaged wiring or connectors, Low transmission fluid levels.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P0729 Infiniti Description
The P0729 Infiniti code indicates that there is an issue with the automatic transmission's 6th gear incorrect ratio. In simpler terms, this means that the transmission is having trouble shifting into or maintaining the correct gear ratio while in 6th gear. This can lead to a variety of performance issues and can potentially cause long-term damage if not addressed promptly.
Common Causes of P0729 Infiniti
- Faulty transmission sensors
- Damaged wiring or connectors
- Low transmission fluid levels
- Internal transmission damage
- Electronic control module (ECM) issues
Symptoms of P0729 Infiniti
- Rough shifting when attempting to engage 6th gear
- Hesitation or jerking during acceleration in 6th gear
- Decreased fuel efficiency
- Illumination of the Check Engine Light
- Transmission slipping or overheating
How to Fix P0729 Infiniti
- Diagnose the issue using a scan tool to read the fault codes and monitor transmission data.
- Inspect the transmission sensors and wiring for any signs of damage or corrosion.
- Check the transmission fluid level and condition, topping up or replacing as needed.
- Perform a thorough inspection of the transmission components for any signs of internal damage.
- Reset the fault codes and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0729 Infiniti
The cost of repairing the P0729 code can vary depending on the exact cause of the issue and the extent of the repairs needed. On average, the repair costs for this issue can range from $200 to $800, including parts and labor. However, it is essential to keep in mind that diagnostic time and labor rates at auto repair shops can vary significantly based on the location, vehicle make and model, and engine type. It is advisable to obtain quotes from multiple shops and compare rates before proceeding with the repairs.
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