[SOLVED] Subaru P1702 Code: Subaru Auto Trans Signal Voltage Issue

The OBD code P1702 in a Subaru indicates a problem with the Transmission Control Module (TCM).

Symptoms include the Engine Light being ON.

This code is usually caused by a faulty TCM, open or shorted TCM harness, or poor electrical connection.

It is a moderate issue that should be addressed promptly.

To fix it, inspect the TCM wiring harness and connectors for any damage or corrosion.

Repair Importance Level	10.0 (Out of 10)
Estimated Repair Time	Approximately 1.0 hour
Repair Difficulty Level	10.0 (Out of 10)

I know how frustrating it is to see that warning light pop up again and again. You don’t need to spend money at the mechanic just to clear it. With this pocket-friendly automatic car scanner, you can do it yourself in seconds and and avoid the time and inconvenience of driving to a mechanic. Just plug it in, connect to your Android or iOS phone, and instantly see live data. Understand the fault code, clear it right away, and decide if it’s something urgent or if you’re good to drive. It even monitors your car and sends notifications to your phone, so you’re always in control. Simple, fast, and stress-free—today’s offer price!

Symptoms of the Subaru p1702 OBD Code

The vehicle may experience shifting issues or harsh engagements with fault code Subaru P1702.

Symptoms: Engine Light ON.
Possible harsh shifting from the transmission.
Vehicle may go into limp mode, limiting speed and acceleration.
Difficulty shifting gears.
Transmission may slip or jerk during gear changes.

Causes of the Subaru p1702 OBD Code

Do you know you can clear most fault codes—but some could mean serious danger? Don’t take chances with your safety or your family’s safety. This budget-friendly car scanner makes it easy to clear fault codes in seconds while showing you exactly what’s wrong. Plug it in, connect to your Android or iOS phone, and instantly check live data. You’ll know if it’s a minor issue you can clear or something serious that needs attention—so you can drive safely and stress-free. (Today’s Deal)

P1702 in a Subaru indicates a malfunction in the transmission range sensor circuit.

P1702 can be caused by a faulty Transmission Control Module (TCM).
A Transmission Control Module (TCM) harness that is open or shorted.
A Transmission Control Module (TCM) circuit with poor electrical connection.

Fixing Subaru Error Code p1702 Step By Step

Address the wiring or connector issues related to Subaru fault code P1702.

To fix Subaru OBDII code P1702, start by reviewing the possible causes mentioned above.
Visually examine the wiring harness and connectors related to the transmission range sensor circuit.
Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
Test the transmission range sensor for proper operation and signal output.
Replace the transmission range sensor if it fails the test.
Clear the fault codes from the vehicle’s computer using a scan tool.
Test drive the vehicle to ensure the code does not return.

Cost Of Fixing Subaru p1702 Fault Code

Diagnosing and repairing Subaru fault code P1702 may involve inspecting transmission components and electrical connections.

The cost to diagnose and fix Subaru OBD code P1702 typically ranges from $75 to $150, based on a 1. 0hour repair time.

Factors like shop rates and complexity can affect the final cost.

Details of the Subaru p1702 OBD Code

Subaru fault code P1702 relates to a malfunction in the transmission range sensor circuit.

Code P1702 for Subaru vehicles indicates a transmission range sensor circuit malfunction.

This code is triggered by the Engine Control Module (ECM) when it detects an issue with the transmission range sensor circuit.

The transmission range sensor, also known as the neutral safety switch, is responsible for indicating the gear position to the ECM.

When this sensor malfunctions or sends incorrect signals, the ECM sets code P1702. This can lead to drivability issues and may cause the transmission to behave erratically.

Mechanic’s Tech Notes

For Subaru fault code P1702, check for issues with the transmission range sensor circuit.

To diagnose and fix OBDII code P1702 in a Subaru, start by checking the Transmission Control Module (TCM) power and ground using a multimeter.

Verify TCM communication over the Controller Area Network (CAN) using a scan tool.

If the TCM does not respond, reprogramming or reflashing may be necessary.

Visually inspect the wiring harness and connectors for any damage, and ensure connector pins are not broken, bent, pushed out, or corroded.

This thorough inspection can help identify and resolve issues related to code P1702.

FAQ

1. What are the common symptoms associated with Subaru OBD code P1702?

Common symptoms for Subaru OBD code P1702 include Engine Light ON. Causes may be a faulty TCM, open/shorted TCM harness, or poor electrical connection. Fix: Inspect and repair wiring/connectors.

2. What is the typical repair process for resolving OBD code P1702 in a Subaru vehicle?

To resolve OBD code P1702 in a Subaru: Symptoms Engine Light ON, Causes Faulty TCM, TCM harness issues, Fix Inspect and repair TCM and related wiring/connectors.

3. Are there any known common causes for OBD code P1702 to appear in Subaru vehicles?

Yes, common causes for OBD code P1702 in Subaru vehicles include a faulty TCM, open/shorted TCM harness, or poor electrical connection. Inspect and repair as needed.

Wrap Up

If your Subaru is displaying OBD code P1702, you may experience harsh shifting, transmission slippage, or difficulty engaging gears.

This code typically indicates a malfunction in the transmission range sensor circuit, possibly due to a faulty sensor, damaged wiring, or poor electrical connections.

To address Subaru OBD code P1702, begin by inspecting the transmission range sensor and its wiring harness for any signs of damage or corrosion.

Test the sensor’s resistance and voltage output to determine if it needs replacement.

Ensure all connectors related to the transmission range sensor are securely attached and free of debris.