AutoCodes – Generic – C0115

C0115 Code - Pump Motor Circuit

Quick Answer

The system relay is energized when the ignition is ON. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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: C0115 indicates Pump Motor Circuit.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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 5,542

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 May 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0115 Description

The system relay is energized when the ignition is ON. The system relay supplies voltage to the solenoid valves and the pump motor. This voltage is referred to as the system voltage. The Electronic Brake Control Module (EBCM) controls each solenoid valve by grounding the solenoid. The EBCM controls the pump motor by grounding the control circuit. The pump serves 2 purposes:
- Transfers brake fluid from the brake calipers to the master cylinder reservoir during pressure decrease events.
- Transfers brake fluid from the master cylinder reservoir to the brake calipers during pressure increase events.

OBDII Code C0115 - Pump Motor Circuit - AutoCodes.com — C0115 Code - Pump Motor Circuit

What does this mean?

What are the Possible Causes of the DTC C0115?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module (EBCM) harness is open or shorted
Electronic Brake Control Module (EBCM) circuit poor electrical connection

How to Fix the DTC C0115?

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 C0115 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 C0115 code?

Need more information on how to fix the C0115 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0115 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0115 Buick — Pump Motor Circuit
C0115 Cadillac — Pump Motor Circuit
C0115 Chevrolet — Pump Motor Circuit
C0115 GMC — Pump Motor Circuit
C0115 Subaru — ABS Wheel Speed Sensor Malfunction

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 C0115 Code

1. What are the common symptoms of OBDII code C0115 (Pump Motor Circuit)?

- Common symptoms include the ABS warning light illuminating on the dashboard, difficulty braking, and potential loss of anti-lock brake system functionality.

2. What are the possible causes of OBDII code C0115?

- The code C0115 can be triggered by issues such as a faulty ABS pump motor, damaged wiring or connectors in the pump motor circuit, or a malfunctioning ABS control module.

3. How can I diagnose the cause of OBDII code C0115?

- Diagnosing the code C0115 typically involves conducting a visual inspection of the ABS pump motor and its circuitry, testing the wiring for continuity, and using a scan tool to retrieve more detailed diagnostic information.

4. What are some repair tips for addressing OBDII code C0115?

- Repair tips may include checking and repairing any damaged wiring or connectors in the pump motor circuit, replacing a faulty ABS pump motor, or reprogramming the ABS control module if necessary.

5. Can I continue driving with OBDII code C0115 present?

- It is not recommended to drive with OBDII code C0115 present, as it can affect the proper functioning of the anti-lock brake system and compromise vehicle safety.

6. How serious is OBDII code C0115 (Pump Motor Circuit)?

- OBDII code C0115 is considered a serious issue as it can impact the performance of the anti-lock brake system, potentially compromising the vehicle's ability to brake safely in certain situations.

7. Can I reset OBDII code C0115 without fixing the underlying issue?

- Resetting the code without addressing the underlying issue may temporarily turn off the warning light, but the problem will likely reoccur until the root cause is identified and repaired.

8. Are there any common mistakes to avoid when dealing with OBDII code C0115?

- Common mistakes to avoid include ignoring the warning light, attempting to drive with impaired ABS functionality, or overlooking the importance of a thorough diagnostic process.

9. How much does it typically cost to repair OBDII code C0115?

- The cost of repairing OBDII code C0115 can vary depending on the specific cause of the issue, but it may involve expenses such as parts replacement, labor costs, and potential diagnostic fees.

10. Is it possible to prevent OBDII code C0115 from occurring?

- While some causes of OBDII code C0115 are unavoidable, regular maintenance and inspections of the anti-lock brake system components can help prevent issues that may trigger the code.