P1686 GMC Code - Transmission Control Module Power Up Temperature Sensor Circuit High Voltage
Quick Answer
The Transmission Control Module (TCM) power up the temperature sensor is located inside of the control solenoid (w/body and TCM) valve assembly and has no serviceable parts. Common causes include Reprogram TCM and recheck code, Replace Transmission Control Module (TCM) Sensor/body assembly one piece. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1686 GMC indicates Transmission Control Module Power Up Temperature Sensor Circuit High Voltage.
- Common causes
- Common causes include Reprogram TCM and recheck code, Replace Transmission Control Module (TCM) Sensor/body assembly one piece.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1686 GMC Description
What are the Possible Causes of the DTC P1686 GMC?
- Reprogram TCM and recheck code
- Replace Transmission Control Module (TCM) Sensor/body assembly one piece
How to Fix the DTC P1686 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1686 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1686 GMC Code
1. What are the common symptoms of OBDII code P1686 GMC related to the Transmission Control Module Power Up Temperature Sensor Circuit High Voltage?
- Common symptoms include issues with shifting gears, rough shifting, transmission slipping, and the transmission going into limp mode.
2. What are the possible causes of OBDII code P1686 GMC indicating an issue with the Transmission Control Module Power Up Temperature Sensor Circuit High Voltage?
- Possible causes include a faulty temperature sensor, damaged wiring or connectors in the circuit, a malfunctioning transmission control module, or a problem with the power supply to the sensor.
3. How can I diagnose OBDII code P1686 GMC related to the Transmission Control Module Power Up Temperature Sensor Circuit High Voltage?
- Diagnosis typically involves using a scan tool to read the code, checking the wiring and connectors for damage, testing the temperature sensor, and verifying the power supply to the sensor.
4. Can I still drive my vehicle with OBDII code P1686 GMC indicating a problem with the Transmission Control Module Power Up Temperature Sensor Circuit High Voltage?
- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the transmission and other components. It is best to address the issue promptly.
5. How can I repair OBDII code P1686 GMC related to the Transmission Control Module Power Up Temperature Sensor Circuit High Voltage?
- Repair options may include replacing the temperature sensor, repairing or replacing damaged wiring or connectors, testing and potentially replacing the transmission control module, and ensuring proper power supply to the sensor.
6. Will resetting the OBDII code P1686 GMC resolve the issue with the Transmission Control Module Power Up Temperature Sensor Circuit High Voltage?
- Resetting the code may temporarily clear the warning light, but the underlying issue causing the code will still need to be addressed to prevent further problems with the transmission.
7. Is it possible to prevent OBDII code P1686 GMC from occurring in the future related to the Transmission Control Module Power Up Temperature Sensor Circuit High Voltage?
- Regular maintenance checks, ensuring proper wiring connections, and addressing any temperature sensor or transmission control module issues promptly can help prevent this code from occurring.
8. Can a DIY enthusiast diagnose and repair OBDII code P1686 GMC linked to the Transmission Control Module Power Up Temperature Sensor Circuit High Voltage?
- While some basic diagnostics like checking wiring connections can be done by a DIY enthusiast, diagnosing and repairing complex issues with the temperature sensor or transmission control module may require professional help.
9. How urgent is it to address OBDII code P1686 GMC concerning the Transmission Control Module Power Up Temperature Sensor Circuit High Voltage?
- It is important to address this code promptly to prevent further damage to the transmission and ensure the safe operation of the vehicle.
10. Are there any recalls or technical service bulletins related to OBDII code P1686 GMC and the Transmission Control Module Power Up Temperature Sensor Circuit High Voltage?
- It is advisable to check with GMC or authorized service centers for any recalls or technical service bulletins related to this specific OBDII code to see if there are any known issues or solutions.
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