AutoCodes – Subaru – P1512 Subaru

P1512 Subaru Code - Idle Air Control Solenoid Valve Signal 2 Circuit Low Input

Quick Answer

The Idle Air Control Solenoid valve is incorporated in the throttle body and regulates the amount of intake air which bypasses the throttle valve built into the throttle body. Common causes include Faulty Idle Air Control Solenoid Valve, Idle Air Control Solenoid Valve harness is open or shorted, Idle Air Control Solenoid 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: P1512 Subaru indicates Idle Air Control Solenoid Valve Signal 2 Circuit Low Input.
Common causes: Common causes include Faulty Idle Air Control Solenoid Valve, Idle Air Control Solenoid Valve harness is open or shorted, Idle Air Control Solenoid 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.

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Code Popularity 17,021

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 Aug 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1512 Subaru Description

The Idle Air Control Solenoid valve is incorporated in the throttle body and regulates the amount of intake air which bypasses the throttle valve built into the throttle body. It is activated by a signal sent from the Engine Control Module (ECM) to maintain engine idle speed to the target engine speed.

OBDII Code P1512 Subaru - Idle Air Control Solenoid Valve Signal 2 Circuit Low Input - AutoCodes.com — P1512 Subaru Code - Idle Air Control Solenoid Valve Signal 2 Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P1512 Subaru?

Faulty Idle Air Control Solenoid Valve
Idle Air Control Solenoid Valve harness is open or shorted
Idle Air Control Solenoid Valve circuit poor electrical connection

How to Fix the DTC P1512 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 P1512 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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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 P1512 Subaru Code

1. What are common symptoms of OBDII code P1512 in a Subaru related to the Idle Air Control Solenoid Valve Signal 2 Circuit Low Input?

- Common symptoms include rough idle, stalling at low speeds, and difficulty maintaining a steady idle speed.

2. What are the possible causes of OBDII code P1512 in a Subaru?

- The code P1512 in a Subaru is often caused by a faulty idle air control solenoid valve, wiring issues, or a malfunctioning engine control module (ECM).

3. How can I diagnose the cause of OBDII code P1512 in my Subaru?

- To diagnose the issue, you can perform a visual inspection of the wiring and connectors, test the resistance of the solenoid valve, and use a scan tool to monitor the sensor data related to the idle air control system.

4. Can a dirty throttle body cause OBDII code P1512 in a Subaru?

- Yes, a dirty throttle body can disrupt the airflow and affect the idle air control system, potentially triggering the P1512 code in a Subaru.

5. How should I repair OBDII code P1512 in my Subaru?

- Depending on the root cause, you may need to replace the idle air control solenoid valve, repair or replace damaged wiring, or reprogram the ECM to resolve the P1512 code.

6. Is it safe to continue driving with OBDII code P1512 present in my Subaru?

- It is not recommended to continue driving with the P1512 code as it can lead to poor engine performance, stalling, and potential damage to other engine components.

7. Can a DIY enthusiast fix OBDII code P1512 in a Subaru?

- While some repairs related to the P1512 code can be done by a DIY enthusiast, it is recommended to have a professional mechanic diagnose and repair the issue to ensure proper resolution.

8. Will resetting the OBDII code P1512 in my Subaru make it go away permanently?

- Simply resetting the code without addressing the underlying issue will not make it go away permanently. The root cause must be diagnosed and repaired to prevent code recurrence.

9. How long does it typically take to repair OBDII code P1512 in a Subaru?

- The repair time for the P1512 code can vary depending on the cause and complexity of the issue. It may take anywhere from a few hours to a full day to complete the repair.

10. Can the OBDII code P1512 in a Subaru be a recurring problem?

- If the root cause of the P1512 code is not properly addressed, it can become a recurring problem, leading to ongoing issues with the idle air control system.