P0730 Chrysler Code - Incorrect Gear Ratio
Quick Answer
This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows: Torque converter slip ratio = A x C/B A: Output shaft revolution signal from speed sensor (revolution sensor) B: Engine speed signal from Engine Control Module (ECM) C: Gear ratio determined as gear position which TCM supposes If the actual gear position is higher than the position supposed by TCM, the slip ratio will be more than normal. Common causes include Low transmission fluid level, Dirty transmission fluid, Shift solenoids. 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
- P0730 Chrysler indicates Incorrect Gear Ratio.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Shift solenoids.
- 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.
Code P0730 Chrysler Description
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from speed sensor (revolution sensor)
B: Engine speed signal from Engine Control Module (ECM)
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is higher than the position supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.
What are the Possible Causes of the DTC P0730 Chrysler?
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit
How to Fix the DTC P0730 Chrysler?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0730 Chrysler code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0730 Chrysler code?
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Need Help with the Code?
Get the P0730 Chrysler code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0730 Chrysler Code
1. What are the common symptoms of OBDII code P0730 in a Chrysler vehicle?
- Common symptoms include erratic shifting, difficulty changing gears, slipping transmission, and decreased fuel efficiency.
2. What are the possible causes of the OBDII code P0730 in a Chrysler car?
- The code P0730 typically indicates an incorrect gear ratio, which can be caused by issues such as a faulty transmission, low transmission fluid, a worn-out clutch, or a malfunctioning solenoid.
3. How can I diagnose the OBDII code P0730 in my Chrysler vehicle?
- Diagnosing the code P0730 usually involves conducting a thorough inspection of the transmission system, checking the transmission fluid level and condition, and using a scan tool to read the error codes stored in the vehicle's computer.
4. What are some repair tips for fixing the OBDII code P0730 in a Chrysler car?
- Repair tips may include checking and topping up the transmission fluid, inspecting the transmission for any visible damage, replacing worn-out components like the clutch or solenoid, and resetting the error codes after making necessary repairs.
5. Can I drive my Chrysler vehicle with the OBDII code P0730 present?
- It is not recommended to drive your vehicle with the code P0730 as it can lead to further damage to the transmission system and potentially cause safety hazards on the road. It's best to address the issue promptly.
6. How much does it typically cost to repair the OBDII code P0730 in a Chrysler vehicle?
- The cost of repairing the code P0730 can vary depending on the underlying cause and the extent of the damage. It is advisable to consult with a professional mechanic to get an accurate estimate for the repairs.
7. Is it possible to reset the OBDII code P0730 in a Chrysler car without fixing the issue?
- While you can clear the error code using a scan tool, it is crucial to address the root cause of the problem to prevent further transmission issues. Simply resetting the code without fixing the underlying issue may lead to recurring problems.
8. How long does it take to repair the OBDII code P0730 in a Chrysler vehicle?
- The repair time for the code P0730 can vary depending on the specific cause of the issue and the complexity of the repairs needed. Some repairs may be completed within a few hours, while others may take longer.
9. Can a DIY enthusiast fix the OBDII code P0730 in a Chrysler car?
- While some minor transmission issues can be addressed by DIY enthusiasts, diagnosing and repairing the code P0730 may require specialized tools and expertise. It is recommended to consult with a professional mechanic for proper diagnosis and repair.
10. How can I prevent the OBDII code P0730 from occurring in my Chrysler vehicle?
- To prevent the code P0730, it is essential to maintain your vehicle properly by regularly checking the transmission fluid level, following the manufacturer's recommended maintenance schedule, and promptly addressing any transmission-related issues that may arise.
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