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 where the gear shifter is because it's getting mixed-up signals.
The P1701 code indicates a problem with the transmission control system, specifically with the position information being received over the CAN or serial communication line.
The P1701 code is triggered when the transmission control module (TCM) detects conflicting or erroneous position information from the gear position sensor via the CAN bus or serial line. This could be due to a fault in the sensor, wiring, or communication network.
• Check engine light on
• Transmission may not shift properly
• Erratic or incorrect gear display
• Faulty gear position sensor
• Damaged wiring or connectors
• Faulty transmission control module (TCM)
CAN: Controller Area Network, a vehicle bus standard designed to allow microcontrollers and devices to communicate with each other.
TCM: Transmission Control Module, a device that controls modern electronic automatic transmissions.
• Use a scan tool to verify the code and check for other related codes.
• Inspect the wiring and connectors for damage or corrosion.
• Test the gear position sensor for proper operation.
• Replace faulty gear position sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the transmission control module (TCM) if necessary.
• OBD-II scan tool
• Multimeter
• Wiring diagram
$200 - $600
Moderate
• Ford Focus
• Nissan Altima
• Honda Accord
• Regular maintenance checks on wiring and connectors.
• Ensure transmission fluid is at the correct level.
• Avoid harsh driving conditions that may stress the transmission.
Transmission Control System Issue
• If you notice transmission issues, avoid driving the vehicle until repairs are made.
• Regularly check for any warning lights on the dashboard.
Check with your vehicle manufacturer; transmission issues may be covered under powertrain warranty.
P1701 is less common but can occur in vehicles with aging electronic systems or those that have experienced water damage.
Moderate – Addressing this issue promptly can prevent further transmission damage.
Driving with transmission issues can be unsafe and may lead to further vehicle damage.
• Vehicle stationary with engine running
• Transmission in neutral or park
The gear position sensor is typically located on the transmission housing.
Q: Can I drive with a P1701 code?
A: It's not recommended as it can lead to further transmission damage.
Q: How can I prevent a P1701 code?
A: Regular maintenance and checking for wiring issues can help prevent this code.
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