AutoCodes – Subaru – P1C17 Subaru

P1C17 Subaru Code - Idle Control System RPM Higher Than Expected

Quick Answer

The Engine Control Module (ECM) monitors the Idle Control System. Common causes include Faulty Idle Control System, Idle Control System harness is open or shorted, Idle Control System 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: P1C17 Subaru indicates Idle Control System RPM Higher Than Expected.
Common causes: Common causes include Faulty Idle Control System, Idle Control System harness is open or shorted, Idle Control System 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 My Repairs

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

Code Popularity 1,569

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 Mar 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

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

Code P1C17 Subaru Description

The Engine Control Module (ECM) monitors the Idle Control System. The ECM sets the OBDII code when the Idle Control System RPM is not to factory specifications.

OBDII Code P1C17 Subaru - Idle Control System RPM Higher Than Expected - AutoCodes.com — P1C17 Subaru Code - Idle Control System RPM Higher Than Expected

What does this mean?

What are the Possible Causes of the DTC P1C17 Subaru?

Faulty Idle Control System
Idle Control System harness is open or shorted
Idle Control System circuit poor electrical connection

How to Fix the DTC P1C17 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 P1C17 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 P1C17 Subaru code?

Need more information on how to fix the P1C17 Subaru code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1C17 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 P1C17 Subaru Code

1. What are the common symptoms of OBDII code P1C17 in a Subaru?

- Common symptoms include higher-than-usual idle RPM, rough idling, stalling at idle, and potential decrease in fuel efficiency.

2. What typically causes the OBDII code P1C17 in a Subaru?

- The code is often triggered by a malfunction in the idle control system, such as a faulty idle air control valve, vacuum leak, or throttle body issue.

3. How can I diagnose the OBDII code P1C17 in my Subaru?

- Diagnosing the code typically involves checking for vacuum leaks, inspecting the idle air control valve, and testing the throttle body for proper operation.

4. Can a dirty or faulty throttle body cause the OBDII code P1C17 in a Subaru?

- Yes, a dirty or malfunctioning throttle body can disrupt the proper airflow and lead to higher-than-expected idle RPM, triggering the code.

5. What are some repair tips for fixing the OBDII code P1C17 in a Subaru?

- Repair tips may include cleaning or replacing the idle air control valve, fixing any vacuum leaks, cleaning the throttle body, and resetting the ECM.

6. Is it safe to continue driving my Subaru with the OBDII code P1C17?

- It is not recommended to drive with this code present, as it can lead to poor engine performance and potential stalling issues, which may compromise safety.

7. Can a DIY enthusiast fix the OBDII code P1C17 issue in a Subaru?

- Depending on the root cause, some DIY enthusiasts may be able to address the issue by following repair guides and using basic tools, but professional diagnosis is recommended.

8. How much does it typically cost to repair the OBDII code P1C17 in a Subaru at a mechanic?

- The cost can vary depending on the extent of the issue and the specific repairs needed, but it may range from $100 to $500 or more, including parts and labor.

9. Will resetting the ECU clear the OBDII code P1C17 in a Subaru?

- Resetting the ECU may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to reappear after driving the vehicle for some time.

10. Are there any recalls or technical service bulletins related to the OBDII code P1C17 in Subaru vehicles?

- It's recommended to check with Subaru dealerships or online resources for any recalls or technical service bulletins specific to the Idle Control System RPM Higher Than Expected issue (P1C17) in Subaru vehicles.