Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the sensor that tells the car's computer what position the transfer case is in. The transfer case is a part that helps your car switch between different driving modes, like two-wheel drive and four-wheel drive.
The transfer case control module uses a position sensor to determine the current position of the transfer case. If the sensor provides incorrect or no data, this code is triggered.
The C12AE code indicates an issue with the transfer case control module position sensor. This sensor is responsible for providing data to the control module about the position of the transfer case, which is crucial for the proper functioning of the vehicle's drivetrain. If the sensor fails or provides incorrect data, it can affect the vehicle's ability to switch between drive modes.
• Inability to switch between drive modes
• Warning light on the dashboard
• Unusual noises from the transfer case
• Faulty transfer case position sensor
• Wiring issues or poor connections
• Faulty transfer case control module
Transfer Case: A component in a vehicle's drivetrain that helps distribute power to the front and rear axles.
Position Sensor: A device that detects the position of a component and sends this information to the vehicle's control module.
• Check for any visible damage to the sensor or wiring.
• Use a scan tool to read the transfer case position sensor data.
• Inspect the connections and wiring for any corrosion or damage.
• Replace the faulty transfer case position sensor.
• Repair or replace damaged wiring or connectors.
• Replace the transfer case control module if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$200 - $600
Moderate
• Chevrolet Silverado
• GMC Sierra
• Ford F-150
• Regular maintenance of the transfer case
• Ensure wiring and connectors are free from corrosion
• Avoid harsh driving conditions that may damage the transfer case
Sensor Issue
• Avoid driving in conditions that require switching drive modes until repaired.
• Consult a professional mechanic for a precise diagnosis.
Check with your vehicle manufacturer as some components may be covered under warranty.
This code has been reported in vehicles with high mileage or those frequently used in off-road conditions.
Moderate – It should be addressed soon to avoid potential drivetrain issues.
Ignoring this code may lead to drivetrain damage, which can be costly and affect vehicle safety.
• Vehicle parked on a level surface
• Engine off and cooled down
The transfer case control module and position sensor are usually located near the transfer case, which is mounted on the vehicle's drivetrain.
Q: Can I drive with a C12AE code?
A: It's not recommended to drive with this code active, as it can affect your vehicle's ability to switch drive modes.
Q: How do I reset the C12AE code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.
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