AutoCodes – Subaru – P1122 Subaru

P1122 Subaru Code - Pressure Sources Switching Valve Circuit High Input

Quick Answer

P1122 Subaru indicates Pressure Sources Switching Valve Circuit High Input. Common causes include Faulty Pressure Sources Switching Valve, Pressure Sources Switching Valve harness is open or shorted, Pressure Sources Switching Valve 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: P1122 Subaru indicates Pressure Sources Switching Valve Circuit High Input.
Common causes: Common causes include Faulty Pressure Sources Switching Valve, Pressure Sources Switching Valve harness is open or shorted, Pressure Sources Switching Valve 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.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 5,707

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 25, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1122 Subaru Description

OBDII Code P1122 Subaru - Pressure Sources Switching Valve Circuit High Input - AutoCodes.com — P1122 Subaru Code - Pressure Sources Switching Valve Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P1122 Subaru?

Faulty Pressure Sources Switching Valve
Pressure Sources Switching Valve harness is open or shorted
Pressure Sources Switching Valve circuit poor electrical connection

How to Fix the DTC P1122 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 P1122 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 P1122 Subaru code?

Need more information on how to fix the P1122 Subaru code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1122 Subaru 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 P1122 Subaru Code

1. What are the common symptoms of OBDII code P1122 in a Subaru?

- Common symptoms include rough idling, engine stalling, decreased fuel efficiency, and potential difficulty starting the vehicle.

2. What could cause the Pressure Sources Switching Valve Circuit High Input code (P1122) in a Subaru?

- The code P1122 in a Subaru is often caused by a faulty pressure switching valve, damaged wiring or connectors, or issues with the engine control module (ECM).

3. How can I diagnose the Pressure Sources Switching Valve Circuit High Input code (P1122) in my Subaru?

- Diagnosing P1122 involves using an OBDII scanner to retrieve the code, inspecting the pressure switching valve and related wiring for damage, and testing the valve's functionality.

4. Can a DIYer repair the P1122 code in a Subaru?

- Repairing the P1122 code in a Subaru may be possible for experienced DIYers with proper tools and knowledge. However, due to the complexity of the system, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

5. How much does it typically cost to fix the Pressure Sources Switching Valve Circuit High Input code (P1122) in a Subaru?

- The cost of fixing the P1122 code in a Subaru can vary depending on the root cause of the issue. It may range from $100 to $500 or more, including parts and labor.

6. Is it safe to continue driving with the OBDII code P1122 in my Subaru?

- While it may be possible to drive with the P1122 code present, it is not recommended as it can lead to further damage to the engine or emissions system. It is advisable to address the issue promptly.

7. Can a bad oxygen sensor trigger the P1122 code in a Subaru?

- Yes, a faulty oxygen sensor can sometimes trigger the P1122 code in a Subaru. It is important to properly diagnose the root cause of the code to ensure the correct repair is performed.

8. How long does it typically take to repair the P1122 code in a Subaru?

- The repair time for the P1122 code in a Subaru can vary depending on the exact cause of the issue and the availability of parts. It may take a few hours to a full day for the repair to be completed.

9. Are there any preventive maintenance tips to avoid the P1122 code in a Subaru?

- Regularly servicing and maintaining your Subaru, including checking for signs of wear on the pressure switching valve and related components, can help prevent issues that may trigger the P1122 code.

10. Will resetting the OBDII code P1122 in my Subaru make it go away permanently?

- Resetting the P1122 code in a Subaru may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return. It is crucial to diagnose and fix the root cause of the problem.