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 shifter. It's like when you can't tell if a light switch is on or off.
The Transmission Range Sensor (TRS) helps the car's computer know what gear the transmission is in. If the sensor sends unexpected signals, it triggers this code.
The P2801 code indicates that the Transmission Control Module (TCM) has detected an issue with the range or performance of the Transmission Range Sensor B circuit. This sensor is responsible for providing the TCM with the current gear selection information.
• Check Engine Light is on
• Transmission may not shift properly
• Vehicle may not start or may start in the wrong gear
• Faulty Transmission Range Sensor
• Wiring issues or poor connections in the sensor circuit
• Malfunctioning Transmission Control Module
Transmission Range Sensor: A sensor that detects the current gear selection of the transmission.
Transmission Control Module: An electronic control unit that manages the operation of the transmission.
• Use an OBD-II scanner to verify the code and check for additional codes.
• Inspect the wiring and connectors of the Transmission Range Sensor for damage or corrosion.
• Test the Transmission Range Sensor for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the Transmission Range Sensor if faulty.
• Reprogram or replace the Transmission Control Module if necessary.
• OBD-II Scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford Focus
• Honda Accord
• Toyota Camry
• Regular maintenance checks of the transmission system
• Ensure wiring and connectors are free from corrosion
• Avoid harsh driving conditions that can stress the transmission
Sensor Issue
• Avoid driving the vehicle until the issue is diagnosed and repaired.
• Consult with a professional mechanic for accurate diagnosis.
Check if the vehicle's powertrain warranty covers transmission components.
This code has been reported in vehicles with high mileage or those that frequently operate in harsh conditions.
Moderate – While the vehicle may still be drivable, improper gear selection can lead to further transmission damage.
Driving with a malfunctioning transmission sensor can lead to unexpected vehicle behavior, which may be unsafe.
• Vehicle should be at operating temperature.
• Test should be conducted on a level surface.
The Transmission Range Sensor is typically located on the side of the transmission housing.
Q: Can I drive with a P2801 code?
A: It's not recommended, as it may cause shifting problems and further damage.
Q: How do I reset the P2801 code?
A: After repairs, use an OBD-II scanner to clear the code from the vehicle's computer.
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