Engine-CodesFord – P1702 Ford

P1702 Ford Code - Transmission Range Circuit Failure

Quick Answer

The P1702 Ford diagnostic trouble code indicates a transmission range circuit failure. Common causes include Faulty transmission range sensor, Wiring or connector issues in the transmission range circuit, ECM software or hardware malfunction. 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
P1702 Ford indicates Transmission Range Circuit Failure.
Common causes
Common causes include Faulty transmission range sensor, Wiring or connector issues in the transmission range circuit, ECM software or hardware malfunction.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1702 Ford Description

The P1702 Ford diagnostic trouble code indicates a transmission range circuit failure. This means that the vehicle's engine control module (ECM) is not receiving the correct signals from the transmission range sensor, which is responsible for determining the gear position of the transmission. This can lead to issues with shifting gears, as the ECM may not be able to accurately determine which gear the vehicle is in. If left unaddressed, this can result in poor transmission performance, reduced fuel efficiency, and potential damage to the transmission system.

OBDII Code P1702 Ford - Transmission Range Circuit Failure
P1702 Ford Code - Transmission Range Circuit Failure

Common Causes of P1702 Ford

  1. Faulty transmission range sensor
  2. Wiring or connector issues in the transmission range circuit
  3. ECM software or hardware malfunction
  4. Low transmission fluid levels
  5. Mechanical issues with the transmission itself

Symptoms of P1702 Ford

  1. Difficulty shifting gears
  2. Incorrect gear display on the dashboard
  3. Delayed or harsh shifting
  4. Vehicle stalling when coming to a stop
  5. Illumination of the Check Engine Light

How to Fix P1702 Ford

  1. Diagnose the issue by using a scan tool to retrieve the trouble codes and test the transmission range sensor.
  2. Inspect the wiring and connectors in the transmission range circuit for any damage or corrosion.
  3. Replace the transmission range sensor if it is found to be faulty.
  4. Check and top up transmission fluid levels if necessary.
  5. Clear the trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1702 Ford

The cost of repairing a P1702 Ford code can vary depending on the specific cause of the issue. Generally, the cost of replacing a transmission range sensor can range from $150 to $300, including parts and labor. However, if the issue is related to wiring or connector problems, the cost may increase due to the additional labor involved in diagnosing and resolving these issues. It's recommended to consult with a certified mechanic to get an accurate estimate based on the specific circumstances of your vehicle.

Need more information about the P1702 Ford code?

Need more information on how to fix the P1702 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1702 Ford code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1702 Ford Code

1. What are the common symptoms of OBDII code P1702 (Ford) Transmission Range Circuit Failure?

- Common symptoms include harsh shifting, difficulty shifting gears, transmission slipping, and the transmission staying in one gear.

2. What are the possible causes of OBDII code P1702 (Ford) Transmission Range Circuit Failure?

- Possible causes include a faulty transmission range sensor, damaged wiring or connectors in the transmission range circuit, or a malfunctioning PCM.

3. How can I diagnose OBDII code P1702 (Ford) Transmission Range Circuit Failure?

- Diagnosis typically involves checking the transmission range sensor for proper operation, inspecting the wiring and connectors for damage, and using a scan tool to retrieve trouble codes.

4. Can I drive my vehicle with OBDII code P1702 (Ford) Transmission Range Circuit Failure?

- It is not recommended to drive the vehicle with this code as it can lead to further damage to the transmission or drivability issues.

5. How do I repair OBDII code P1702 (Ford) Transmission Range Circuit Failure?

- Repair typically involves replacing the faulty transmission range sensor, repairing damaged wiring or connectors, or reprogramming the PCM.

6. Can a DIY enthusiast fix OBDII code P1702 (Ford) Transmission Range Circuit Failure?

- DIY enthusiasts with the necessary tools and knowledge can attempt to fix this code, but it is recommended to consult a professional if unsure.

7. Will resetting the trouble codes clear OBDII code P1702 (Ford) Transmission Range Circuit Failure?

- Resetting the trouble codes may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to return.

8. What is the cost to repair OBDII code P1702 (Ford) Transmission Range Circuit Failure?

- The cost of repair can vary depending on the cause of the issue, but it typically ranges from $200 to $500 for parts and labor.

9. Are there any preventative measures to avoid OBDII code P1702 (Ford) Transmission Range Circuit Failure?

- Keeping up with regular maintenance, such as checking and replacing transmission fluid as needed, can help prevent issues leading to this code.

10. How urgent is it to address OBDII code P1702 (Ford) Transmission Range Circuit Failure?

- It is important to address this code promptly to prevent further damage to the transmission and ensure the vehicle's drivability and safety.

Discuss the causes and fixes for P1702 Ford OBDII Code

  • Great info ---thanks for the service.

  • You are welcome.Thank you to visiting our site.

  • I have a 2003 Ranger with the 4 decliner engine and @150,000 miles. I received the error code P1702. When the accelerator is pressed the truck bucks like its missing. More so when the ac is running. Some of the bucking can be eliminated by disengaging the overdrive. Have replaced plugs and wires. Is this something I can fix?

  • The P1702 code is for the Transmission Range Sensor, but a faulty sensor will not cause the symptoms you have. Unfortunately the P1702 code is not very common and there almost no records, could be that the code is not related to the symptoms you have. The only record I found in a national database of repairs for your model and year with similar symptoms, was the Fuel Filter. If you have no other codes I recommend replacing the Fuel Filter first.

  • have a 99 Mustang GT 4.6l Auto Trans got this code P0705 and a P1702 and i put a brand new neutral safety switch lined it up on the marks. my O/D light is flashing still at me when i put it in gear only,
    if its in park it stops flashing. bad wire harness ? short in the wire harness ?