Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a part that measures how fast a certain shaft inside the transmission is spinning. This code means that the sensor is not sending enough signal, kind of like a flashlight with weak batteries.
The P07C9 code indicates that the transmission control module (TCM) has detected a low voltage or weak signal from the Intermediate Shaft Speed Sensor C.
The Intermediate Shaft Speed Sensor C is responsible for monitoring the rotational speed of the intermediate shaft in the transmission. This information is used by the TCM to control shifting and other functions. A 'Circuit Low' code means that the sensor is not sending a strong enough signal, which could be due to wiring issues, a faulty sensor, or other electrical problems.
• Check Engine Light is on
• Erratic or harsh shifting
• Transmission slipping
• Reduced fuel efficiency
• Faulty Intermediate Shaft Speed Sensor C
• Damaged or corroded wiring or connectors
• Faulty TCM
• Electrical short or open circuit
TCM: Transmission Control Module
OBD-II: On-Board Diagnostics II
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.
• Use an OBD-II scanner to confirm the code.
• Visually inspect the wiring and connectors for damage or corrosion.
• Test the sensor with a multimeter to check for proper voltage.
• Check the TCM for any additional codes or faults.
• Replace the Intermediate Shaft Speed Sensor C if faulty.
• Repair or replace damaged wiring or connectors.
• Clear the code and test drive to ensure the issue is resolved.
• Reprogram or replace the TCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Honda Accord
• Toyota Camry
• Ford Fusion
• Regularly inspect and maintain transmission components.
• Ensure electrical connections are clean and secure.
• Follow recommended service intervals for transmission fluid changes.
Sensor Issue
• Avoid driving aggressively until the issue is fixed.
• Have a professional diagnose and repair the problem to prevent further damage.
Check with your vehicle manufacturer; sensor issues may be covered under powertrain warranty.
This code is often associated with transmission sensor issues and has been more common in vehicles with high mileage.
Moderate – While the vehicle may still be drivable, it can lead to more serious transmission problems if not addressed.
Ignoring this issue may lead to unsafe driving conditions due to unpredictable transmission behavior.
• Vehicle at operating temperature
• Transmission in gear
The Intermediate Shaft Speed Sensor C is typically located on the transmission housing, near the intermediate shaft.
Q: Can I drive with a P07C9 code?
A: It's possible, but not recommended as it can lead to more serious transmission problems.
Q: How do I clear a P07C9 code?
A: You can clear the code with an OBD-II scanner, but it may return if the underlying issue is not resolved.
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