AutoCodes – Generic – C1225

C1225 Code - SM Solenoid Circuit

Quick Answer

The SM Solenoid turns on when the signal is received from the Skid Control ECU (Brake Actuator Assembly) and they control the pressure acting on the wheel cylinders to control the braking force. Common causes include Faulty Skid Control ECU (Brake Actuator Assembly). 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: C1225 indicates SM Solenoid Circuit.
Common causes: Common causes include Faulty Skid Control ECU (Brake Actuator Assembly).
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 32,465

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 Jan 18, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1225 Description

The SM Solenoid turns on when the signal is received from the Skid Control ECU (Brake Actuator Assembly) and they control the pressure acting on the wheel cylinders to control the braking force. The Skid Control ECU (Brake Actuator Assembly) monitors the SM Solenoid. The Skid Control ECU (Brake Actuator Assembly) sets the Diagnostic Trouble Code (DTC) when the SM Solenoid is not to factory specifications.

OBDII Code C1225 - SM Solenoid Circuit - AutoCodes.com — C1225 Code - SM Solenoid Circuit

What does this mean?

What are the Possible Causes of the DTC C1225?

Faulty Skid Control ECU (Brake Actuator Assembly)

How to Fix the DTC C1225?

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 C1225 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 C1225 code?

Need more information on how to fix the C1225 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1225 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1225 Buick — Left Front Excessive Wheel Speed Variation
C1225 Cadillac — Left Front Excessive Wheel Speed Variation
C1225 Chevrolet — Left Front Excessive Wheel Speed Variation
C1225 Ford — Brake Fluid Level Sensor Input Circuit Failure
C1225 GMC — Left Front Excessive Wheel Speed Variation
C1225 Lexus — SM Solenoid Circuit
C1225 Lincoln — Brake Fluid Level Sensor Input Circuit Failure
C1225 Mercury — Brake Fluid Level Sensor Input Circuit Failure
C1225 Pontiac — Left Front Excessive Wheel Speed Variation
C1225 Scion — SM Solenoid Circuit
C1225 Toyota — SM Solenoid Circuit

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 C1225 Code

1. What are the common symptoms of OBDII code C1225 (SM Solenoid Circuit)?

- Common symptoms include the ABS warning light being illuminated on the dashboard, loss of ABS functionality, and potential issues with traction control.

2. What can cause OBDII code C1225 to trigger?

- The code C1225 is typically triggered by a malfunction in the SM (Side-Mounted) Solenoid circuit, which could be caused by wiring issues, a faulty solenoid, or a problem with the ABS module.

3. How can I diagnose the OBDII code C1225?

- Diagnosing OBDII code C1225 involves using a scan tool to retrieve the code, inspecting the wiring and connections related to the SM Solenoid, and testing the solenoid itself for proper operation.

4. Can I continue driving with OBDII code C1225 present?

- While it may be possible to continue driving with OBDII code C1225, it is not recommended as it could compromise the functionality of the ABS system, leading to potential safety issues during braking.

5. What are some repair tips for fixing OBDII code C1225?

- Repair tips for OBDII code C1225 include checking and repairing any damaged wiring, replacing the faulty SM Solenoid if necessary, and resetting the ABS system to clear the code.

6. Will OBDII code C1225 cause my vehicle to fail an emissions test?

- OBDII code C1225 is related to the ABS system and is not directly related to emissions, so it should not cause your vehicle to fail an emissions test.

7. How much does it cost to repair OBDII code C1225?

- The cost of repairing OBDII code C1225 can vary depending on the underlying cause of the issue, but it may involve expenses for parts and labor ranging from $100 to $500 or more.

8. Can a DIY enthusiast fix OBDII code C1225 at home?

- Depending on your skill level and access to tools, a DIY enthusiast may be able to fix OBDII code C1225 at home by following repair guides and procedures specific to the SM Solenoid circuit.

9. Is it important to address OBDII code C1225 promptly?

- Yes, it is important to address OBDII code C1225 promptly to ensure the proper functioning of the ABS system and maintain safe braking performance in your vehicle.

10. How long does it typically take to repair OBDII code C1225?

- The time required to repair OBDII code C1225 can vary based on the complexity of the issue and the availability of parts, but it may take anywhere from a few hours to a full day at a repair shop.