AutoCodes – Generic – C1103

C1103 Code - Front Right Sensor 1

Quick Answer

When the sensor rotor rotates, the magnetic field changes. Common causes include ABS Wheel Sensor not properly installed, ABS Wheel Sensor rotor or encoder damaged, ABS Wheel Sensor rotor loose on axle. 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
C1103 indicates Front Right Sensor 1.
Common causes
Common causes include ABS Wheel Sensor not properly installed, ABS Wheel Sensor rotor or encoder damaged, ABS Wheel Sensor rotor loose on axle.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 24,120
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 14, 2020
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Code C1103 Description

When the sensor rotor rotates, the magnetic field changes. It converts the magnetic field changes to current signals (rectangular wave) and transmits them to the Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit). The ABS Actuator and Electric Unit monitors the ABS Wheel Sensor. The ABS Actuator and Electric Unit sets the OBDII code when the ABS Wheel Sensor is not to factory specifications.
OBDII Code C1103 - Front Right Sensor 1 - AutoCodes.com
C1103 Code - Front Right Sensor 1

What are the Possible Causes of the DTC C1103?

  • ABS Wheel Sensor not properly installed
  • ABS Wheel Sensor rotor or encoder damaged
  • ABS Wheel Sensor rotor loose on axle
  • Faulty ABS Wheel Sensor
  • ABS Wheel Sensor harness is open or shorted
  • ABS Wheel Sensor circuit poor electrical connection
  • Faulty Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit)

How to Fix the DTC C1103?

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 C1103 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 C1103 code?

Need more information on how to fix the C1103 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1103 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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 C1103 Code

1. What are common symptoms of OBDII code C1103 (Front Right Sensor 1)?

- Common symptoms include the ABS warning light being illuminated on the dashboard, potential traction control issues, and difficulty with braking performance.

2. What are the possible causes of OBDII code C1103?

- The code C1103 can be triggered by a faulty front right wheel speed sensor, damaged wiring or connectors related to the sensor, or issues with the sensor's position or alignment.

3. How can I diagnose the front right wheel speed sensor for OBDII code C1103?

- To diagnose the sensor, you can visually inspect the wiring and connectors for any damage, use a multimeter to test the sensor's resistance, and check for any physical damage or misalignment of the sensor.

4. Can a dirty wheel speed sensor cause OBDII code C1103?

- Yes, a dirty or contaminated front right wheel speed sensor can cause code C1103 to trigger due to inaccurate readings. Cleaning the sensor may help resolve the issue.

5. Are there any DIY repair tips for fixing OBDII code C1103?

- DIY repair tips include checking and cleaning the sensor, inspecting and repairing any damaged wiring or connectors, and ensuring the sensor is properly positioned and aligned.

6. Is it safe to drive with OBDII code C1103 active?

- It is not recommended to drive with code C1103 active, as it can affect the proper functioning of the ABS system and traction control, potentially compromising vehicle safety.

7. Can a malfunctioning ABS module trigger OBDII code C1103?

- While less common, a malfunctioning ABS module can potentially cause code C1103 to appear. It is important to diagnose the specific cause accurately to avoid unnecessary repairs.

8. How much does it typically cost to repair OBDII code C1103?

- The cost of repairing code C1103 can vary depending on the underlying cause, but it may involve expenses for parts such as a new wheel speed sensor, labor for diagnosis and repair, and potential connector replacements.

9. Will resetting the OBDII code C1103 clear the issue permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue with the front right sensor persists, the code is likely to reappear. It is essential to address the root cause of the problem for a permanent solution.

10. Can extreme weather conditions affect the front right wheel speed sensor and trigger OBDII code C1103?

- Yes, extreme weather conditions such as heavy snow, ice, or water exposure can impact the front right wheel speed sensor's performance, potentially leading to code C1103 activation. Regular maintenance and protection can help prevent weather-related issues.

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