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 is having trouble understanding the position of the gear selector. It's like when you can't tell if a light switch is on or off.
The P0906 code is triggered when the transmission control module (TCM) detects a low voltage signal from the gate select position sensor circuit A.
The gate select position sensor is part of the transmission system that helps the vehicle determine the gear position. A low signal indicates that there may be an electrical issue, such as a short circuit or poor connection, affecting the sensor's ability to communicate with the TCM.
• Check Engine Light is on
• Difficulty in shifting gears
• Transmission may not engage properly
• Faulty gate select position sensor
• Damaged wiring or connectors in the circuit
• Faulty transmission control module (TCM)
Transmission Control Module (TCM): A computer that controls the transmission's operation.
Gate Select Position Sensor: A sensor that detects the position of the gear selector.
• Use an OBD-II scanner to confirm the P0906 code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the gate select position sensor for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty gate select position sensor.
• Replace or reprogram the transmission control module if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Ford Focus
• Honda Accord
• Toyota Camry
• Regularly inspect and maintain transmission components.
• Ensure electrical connections are secure and free from corrosion.
• Follow the vehicle's recommended service schedule.
Sensor Issue
• Do not ignore the Check Engine Light.
• Avoid driving the vehicle if shifting issues are severe.
• Consult a professional mechanic for diagnosis and repair.
Check with your vehicle manufacturer for specific warranty coverage related to transmission components.
The P0906 code has been associated with vehicles using electronic transmission control systems, particularly in models from the early 2000s onwards.
Moderate – Address the issue promptly to avoid potential transmission damage.
Driving with transmission issues can be dangerous. Ensure repairs are made to maintain vehicle safety.
• Vehicle should be in a safe location.
• Ensure the transmission is at operating temperature.
The gate select position sensor is typically located on or near the transmission housing.
Q: Can I drive with a P0906 code?
A: It's not recommended to drive with this code, as it can lead to further transmission issues.
Q: How do I reset the P0906 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is resolved, it should not return.
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