AutoCodes – Subaru – P1722 Subaru

P1722 Subaru Code - Automatic Transmission Diagnosis Signal Voltage High

Quick Answer

P1722 Subaru indicates Automatic Transmission Diagnosis Signal Voltage High. 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: P1722 Subaru indicates Automatic Transmission Diagnosis Signal Voltage High.
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.

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Code Popularity 6,325

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1722 Subaru Description

OBDII Code P1722 Subaru - Automatic Transmission Diagnosis Signal Voltage High - AutoCodes.com — P1722 Subaru Code - Automatic Transmission Diagnosis Signal Voltage High

What does this mean?

What are the Possible Causes of the DTC P1722 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 P1722 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 P1722 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.

Need more information about the P1722 Subaru code?

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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 P1722 Subaru Code

1. What are the common symptoms of OBDII code P1722 in a Subaru automatic transmission?

- Common symptoms may include harsh shifting, transmission slipping, decreased fuel efficiency, and the transmission going into limp mode.

2. What does the OBDII code P1722 Subaru indicate about the automatic transmission?

- The code P1722 signifies that there is a high voltage signal detected in the automatic transmission diagnosis circuit.

3. What are the possible causes of OBDII code P1722 in a Subaru?

- Possible causes include a faulty transmission control module (TCM), damaged wiring or connectors in the diagnosis circuit, or a malfunctioning shift solenoid.

4. How can I diagnose the issue causing OBDII code P1722 in my Subaru?

- Diagnosing the issue may involve checking the TCM for faults, inspecting wiring and connectors for damage, and testing the shift solenoid for proper operation.

5. Can driving with OBDII code P1722 in a Subaru cause further damage to the vehicle?

- Continuing to drive with code P1722 present can potentially cause damage to the transmission components and lead to more severe transmission issues over time.

6. How can I repair OBDII code P1722 in my Subaru automatic transmission?

- Repairing code P1722 may involve replacing a faulty TCM, repairing damaged wiring or connectors, or replacing a malfunctioning shift solenoid.

7. Is it safe to clear the OBDII code P1722 in my Subaru without addressing the underlying issue?

- Clearing the code without resolving the root cause may temporarily turn off the check engine light, but the underlying transmission issue will persist and may lead to further problems.

8. Can a DIY enthusiast fix OBDII code P1722 in a Subaru, or is it best left to a professional mechanic?

- While some basic diagnostic steps can be taken by a DIY enthusiast, repairing code P1722 often requires specialized tools and expertise, making it best suited for a professional mechanic.

9. Are there any preventive maintenance steps I can take to avoid encountering OBDII code P1722 in my Subaru?

- Regularly servicing the transmission, checking for any signs of fluid leaks, and addressing any shifting issues promptly can help prevent the occurrence of code P1722.

10. How long does it typically take to repair OBDII code P1722 in a Subaru automatic transmission?

- The repair time can vary depending on the exact cause of the code, but it may take several hours to a full day for a mechanic to diagnose and repair the issue successfully.