Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with a sensor that helps measure how fast part of the transmission is spinning. It's like when a speedometer on a bike isn't working right and you can't tell how fast you're going.
The P2749 code is triggered when the powertrain control module (PCM) detects an issue with the circuit of the intermediate shaft speed sensor C. This sensor is crucial for monitoring the rotational speed of the transmission's intermediate shaft.
The intermediate shaft speed sensor C is responsible for providing the PCM with data about the rotational speed of the transmission's intermediate shaft. This information is used for transmission shifting and performance optimization. A fault in this circuit can lead to improper transmission operation.
• Check Engine Light illuminated
• Erratic or harsh shifting
• Transmission slipping
• Decreased fuel efficiency
• Faulty intermediate shaft speed sensor C
• Wiring issues such as shorts or open circuits
• Poor electrical connections
• Faulty PCM
PCM: Powertrain Control Module, the vehicle's computer that controls engine and transmission functions.
OBD-II: On-Board Diagnostics, a standardized system for self-diagnosing vehicle issues.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the intermediate shaft speed sensor C for proper operation.
• Check the PCM for faults.
• Repair or replace damaged wiring or connectors.
• Replace the intermediate shaft speed sensor C if faulty.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance and inspection of transmission components.
• Ensure proper electrical connections and wiring integrity.
• Use quality replacement parts.
Sensor Issue
• Avoid driving the vehicle aggressively until the issue is resolved.
• Consult with a professional mechanic to ensure proper diagnosis and repair.
Check with your vehicle manufacturer; sensor-related issues may be covered under powertrain warranty.
This code has been more prevalent in vehicles with high mileage or those that have experienced transmission issues.
Moderate – While the vehicle may still be drivable, it is recommended to address this issue to prevent further transmission damage.
Driving with a malfunctioning transmission can be dangerous. Ensure repairs are made promptly.
• Vehicle at operating temperature
• Transmission in various gear states
The intermediate shaft speed sensor C is typically located on the transmission housing, near the intermediate shaft.
Q: Can I drive with a P2749 code?
A: It's possible to drive, but it's not recommended as it can cause further damage to the transmission.
Q: How can I reset the P2749 code?
A: The code can be reset with an OBD-II scanner after the issue is fixed, but it will return if the problem persists.
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