AutoCodes – Subaru – P1C10 Subaru

P1C10 Subaru Code - Vacuum Pump Functional Error

Quick Answer

The Engine Control Module (ECM) monitors the Vacuum Pump Relay. Common causes include Faulty Vacuum Pump Relay, Vacuum Pump Relay harness is open or shorted, Vacuum Pump Relay 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: P1C10 Subaru indicates Vacuum Pump Functional Error.
Common causes: Common causes include Faulty Vacuum Pump Relay, Vacuum Pump Relay harness is open or shorted, Vacuum Pump Relay 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 1,512

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 14, 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 P1C10 Subaru Description

The Engine Control Module (ECM) monitors the Vacuum Pump Relay. The ECM sets the OBDII code when the Vacuum Pump Relay is not to factory specifications.

OBDII Code P1C10 Subaru - Vacuum Pump Functional Error - AutoCodes.com — P1C10 Subaru Code - Vacuum Pump Functional Error

What does this mean?

What are the Possible Causes of the DTC P1C10 Subaru?

Faulty Vacuum Pump Relay
Vacuum Pump Relay harness is open or shorted
Vacuum Pump Relay circuit poor electrical connection

How to Fix the DTC P1C10 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 P1C10 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 P1C10 Subaru code?

Need more information on how to fix the P1C10 Subaru code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1C10 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 P1C10 Subaru Code

1. What are the common symptoms of OBDII code P1C10 in a Subaru related to a Vacuum Pump Functional Error?

Symptoms may include poor brake performance, a noisy vacuum pump, or an illuminated check engine light.

2. What could cause the OBDII code P1C10 in a Subaru indicating a Vacuum Pump Functional Error?

Possible causes include a faulty vacuum pump, damaged vacuum lines, or a malfunctioning vacuum pressure sensor.

3. How can I diagnose the Vacuum Pump Functional Error related to OBDII code P1C10 in my Subaru?

Diagnosis typically involves inspecting the vacuum pump, checking vacuum lines for leaks, testing the vacuum pressure sensor, and scanning the system for other related issues.

4. Can I continue driving my Subaru with the OBDII code P1C10 indicating a Vacuum Pump Functional Error?

It is not recommended to drive the vehicle with this error code as it can affect brake performance and overall safety.

5. How can I repair the Vacuum Pump Functional Error causing OBDII code P1C10 in my Subaru?

Repair may involve replacing the vacuum pump, repairing or replacing damaged vacuum lines, or calibrating/replacing the vacuum pressure sensor.

6. Are there any DIY tips for troubleshooting the OBDII code P1C10 related to a Vacuum Pump Functional Error in a Subaru?

DIY tips may include visually inspecting the vacuum pump and lines, checking for loose connections, and ensuring proper vacuum pressure sensor operation.

7. How much does it typically cost to repair the Vacuum Pump Functional Error associated with OBDII code P1C10 in a Subaru?

Costs can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars for parts and labor.

8. Can a Vacuum Pump Functional Error causing OBDII code P1C10 in a Subaru be prevented?

Regular maintenance, such as checking and replacing worn vacuum components, can help prevent this error from occurring.

9. What are the potential risks of ignoring the OBDII code P1C10 related to a Vacuum Pump Functional Error in a Subaru?

Ignoring this code can lead to brake performance issues, safety concerns, and potential damage to other components in the braking system.

10. Is it necessary to reset the OBDII system after repairing the Vacuum Pump Functional Error linked to code P1C10 in a Subaru?

Yes, it is recommended to clear the error code and reset the OBDII system after resolving the underlying issue to ensure proper functioning and accurate diagnostics.