P1702 Subaru Code - Automatic Transmission Diagnosis Signal Voltage Low
Quick Answer
P1702 Subaru indicates Automatic Transmission Diagnosis Signal Voltage Low. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) circuit poor electrical connection. 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 Subaru indicates Automatic Transmission Diagnosis Signal Voltage Low.
- Common causes
- Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) circuit poor electrical connection.
- 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 P1702 Subaru Description
What are the Possible Causes of the DTC P1702 Subaru?
- Faulty Transmission Control Module (TCM)
- Transmission Control Module (TCM) harness is open or shorted
- Transmission Control Module (TCM) circuit poor electrical connection
How to Fix the DTC P1702 Subaru?
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 P1702 Subaru 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 P1702 Subaru Code
1. What are the common symptoms of OBDII code P1702 (Subaru) indicating Automatic Transmission Diagnosis Signal Voltage Low?
- Common symptoms include transmission shifting issues, engine stalling, and the transmission going into limp mode.
2. What are the possible causes of OBDII code P1702 (Subaru) related to Automatic Transmission Diagnosis Signal Voltage Low?
- Possible causes may include a faulty transmission control module (TCM), damaged wiring or connectors, low battery voltage, or a defective TCM power supply.
3. How can I diagnose OBDII code P1702 (Subaru) indicating Automatic Transmission Diagnosis Signal Voltage Low?
- Diagnose the code by checking the TCM for any visible damage, testing the voltage at the TCM, inspecting the wiring and connectors for corrosion or damage, and scanning for any additional trouble codes.
4. Are there any DIY repair tips for fixing OBDII code P1702 (Subaru) related to Automatic Transmission Diagnosis Signal Voltage Low?
- DIY repair tips may include checking and repairing any damaged wiring or connectors, ensuring the battery voltage is within the proper range, and resetting the TCM by disconnecting the battery for a few minutes.
5. Can a low battery voltage cause OBDII code P1702 (Subaru) to trigger for Automatic Transmission Diagnosis Signal Voltage Low?
- Yes, low battery voltage can be a common cause of this code as it may affect the TCM's ability to function properly and maintain the correct voltage levels.
6. What role does the transmission control module (TCM) play in triggering OBDII code P1702 (Subaru) for Automatic Transmission Diagnosis Signal Voltage Low?
- The TCM is responsible for monitoring and controlling the transmission's operation, and if it detects a low voltage signal, it can trigger the P1702 code to indicate a potential issue.
7. Is it safe to continue driving with OBDII code P1702 (Subaru) triggered for Automatic Transmission Diagnosis Signal Voltage Low?
- It is not recommended to continue driving with this code triggered, as it can lead to further transmission issues and potential safety hazards. It is best to address the underlying problem promptly.
8. Can resetting the OBDII system clear the P1702 code related to Automatic Transmission Diagnosis Signal Voltage Low in a Subaru?
- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the low voltage signal is not resolved, the code is likely to reappear.
9. How can a professional mechanic help in diagnosing and repairing OBDII code P1702 (Subaru) for Automatic Transmission Diagnosis Signal Voltage Low?
- A professional mechanic can use specialized diagnostic tools to pinpoint the exact cause of the code, perform thorough inspections, and make accurate repairs to ensure the issue is resolved effectively.
10. Are there any recalls or service bulletins related to OBDII code P1702 (Subaru) and Automatic Transmission Diagnosis Signal Voltage Low?
- It is recommended to check with Subaru dealerships or online resources for any recalls or service bulletins specific to this code to see if there are known issues or solutions provided by the manufacturer.
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