Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer thinks the gears in the transmission are not working right. It's like when you're riding a bike and the chain slips off the gear, making it hard to pedal.
The transmission control module (TCM) detects a mismatch between the actual gear ratio and the expected gear ratio.
The P0730 code indicates that the transmission is not shifting properly due to an incorrect gear ratio. This can be caused by mechanical issues within the transmission, such as worn gears or faulty sensors that provide incorrect data to the TCM.
• Check Engine Light is on
• Transmission slipping
• Poor fuel economy
• Faulty transmission control module (TCM)
• Worn or damaged transmission gears
• Faulty speed sensors
Transmission Control Module (TCM): A computer that controls the transmission functions.
Gear Ratio: The ratio of the rotational speeds of two or more interconnected gears.
• Check for other transmission-related codes.
• Inspect the transmission fluid for level and condition.
• Test the speed sensors for proper operation.
• Replace or repair faulty speed sensors.
• Rebuild or replace the transmission if necessary.
• Reprogram or replace the TCM if faulty.
• OBD-II scanner
• Transmission fluid pressure tester
• Multimeter
$500 - $2500
Difficult
• Honda Accord
• Toyota Camry
• Ford Explorer
• Regular transmission fluid changes
• Avoid aggressive driving
• Routine vehicle maintenance
Transmission Issue
• Avoid driving the vehicle until repaired.
• Consult a professional mechanic for diagnosis.
Transmission repairs may be covered under powertrain warranty.
P0730 has been a common code for vehicles with automatic transmissions, often indicating internal transmission issues.
High – Continuing to drive with this issue can lead to further transmission damage.
Driving with a malfunctioning transmission can be dangerous and may lead to accidents.
• Vehicle in motion
• Transmission shifting through gears
The transmission is located between the engine and the drive shaft, usually at the front of the vehicle.
Q: Can I drive with a P0730 code?
A: It's not recommended to drive with a P0730 code as it can cause further damage to the transmission.
Q: How is the gear ratio determined?
A: The gear ratio is determined by the transmission control module based on input from speed sensors.
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