AutoCodes – Generic – P1C10

P1C10 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 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.

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Code Popularity 1,716

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

What does this mean?

What are the Possible Causes of the DTC P1C10?

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?

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 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 code?

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

Need Help with the Code?

Get the P1C10 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1C10 Subaru — Vacuum Pump Functional Error

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 Code

1. What are the common symptoms of OBDII code P1C10 (Vacuum Pump Functional Error)?

The common symptoms of OBDII code P1C10 include poor brake performance, a noisy vacuum pump, and an illuminated brake warning light on the dashboard.

2. What are some possible causes of OBDII code P1C10 (Vacuum Pump Functional Error)?

Some possible causes of OBDII code P1C10 include a faulty vacuum pump, a vacuum leak in the brake booster system, or a malfunctioning brake pressure sensor.

3. How can I diagnose OBDII code P1C10 (Vacuum Pump Functional Error)?

Diagnosing OBDII code P1C10 involves using a diagnostic scan tool to retrieve the code and then inspecting the vacuum pump, brake booster system, and brake pressure sensor for any signs of damage or malfunction.

4. Can I continue driving my vehicle with OBDII code P1C10 (Vacuum Pump Functional Error)?

It is not recommended to continue driving your vehicle with OBDII code P1C10, as it can lead to unsafe braking performance. It is best to address the issue promptly to ensure your vehicle's safety.

5. How can I repair OBDII code P1C10 (Vacuum Pump Functional Error)?

Repairing OBDII code P1C10 may involve replacing the vacuum pump, repairing any vacuum leaks in the brake booster system, or replacing a faulty brake pressure sensor. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

6. Are there any DIY tips for troubleshooting OBDII code P1C10 (Vacuum Pump Functional Error)?

While some basic inspections like checking for visible vacuum leaks or loose connections can be done DIY, diagnosing and repairing OBDII code P1C10 may require specialized tools and expertise. It is advisable to seek professional help for an accurate diagnosis.

7. How much does it typically cost to repair OBDII code P1C10 (Vacuum Pump Functional Error)?

The cost of repairing OBDII code P1C10 can vary depending on the specific cause of the issue, the labor rates in your area, and the cost of parts. It is recommended to get a few quotes from different mechanics to compare prices.

8. Can a vacuum pump failure trigger other OBDII codes in addition to P1C10?

Yes, a vacuum pump failure can potentially trigger other OBDII codes related to the brake system or vacuum system, in addition to OBDII code P1C10. It is important to address all relevant codes to ensure proper vehicle operation.

9. Is OBDII code P1C10 (Vacuum Pump Functional Error) a common issue in certain vehicle makes and models?

OBDII code P1C10 (Vacuum Pump Functional Error) may be more common in vehicles equipped with electric vacuum pumps for brake assist systems. It is advisable to check for any manufacturer recalls or technical service bulletins related to this code for your specific vehicle.

10. How often should I have my vehicle's brake system inspected to prevent OBDII code P1C10 (Vacuum Pump Functional Error)?

Regular maintenance and inspections of your vehicle's brake system, including the vacuum pump and brake booster components, can help prevent issues like OBDII code P1C10. It is recommended to follow the manufacturer's recommended maintenance schedule for brake system checks.