AutoCodes – Generic – C1156

C1156 Code - Speed Wheel Sensor Communication Circuit

Quick Answer

The steering angle sensor is connected to the Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit) in addition to Control Area Network (CAN) lines. Common causes include Faulty Steering Angle Sensor, Steering Angle Sensor harness is open or shorted, Steering Angle Sensor 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
C1156 indicates Speed Wheel Sensor Communication Circuit.
Common causes
Common causes include Faulty Steering Angle Sensor, Steering Angle Sensor harness is open or shorted, Steering Angle Sensor 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 13,229
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 18, 2020
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Code C1156 Description

The steering angle sensor is connected to the Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit) in addition to Control Area Network (CAN) lines. CAN is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
OBDII Code C1156 - Speed Wheel Sensor Communication Circuit - AutoCodes.com
C1156 Code - Speed Wheel Sensor Communication Circuit

What are the Possible Causes of the DTC C1156?

  • Faulty Steering Angle Sensor
  • Steering Angle Sensor harness is open or shorted
  • Steering Angle Sensor circuit poor electrical connection
  • Faulty ABS Actuator and Electric Unit (Control Unit)
  • CAN communication line

How to Fix the DTC C1156?

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 C1156 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 C1156 code?

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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 C1156 Code

1. What are the common symptoms of OBDII code C1156 (Speed Wheel Sensor Communication Circuit)?

- Common symptoms include ABS warning light illuminated on the dashboard, traction control issues, and erratic speedometer readings.

2. What can cause the OBDII code C1156 to trigger?

- The code C1156 can be triggered by damaged or loose wiring, faulty speed wheel sensors, or issues with the ABS module.

3. How can I diagnose the Speed Wheel Sensor Communication Circuit issue related to code C1156?

- Diagnose by visually inspecting the wiring, checking the speed wheel sensors for damage, and using a scan tool to retrieve live data from the ABS module.

4. Is it safe to continue driving with OBDII code C1156 present?

- It is not recommended to drive with the code C1156 active, as it can affect the vehicle's ABS and traction control systems, compromising safety.

5. How can I repair OBDII code C1156 (Speed Wheel Sensor Communication Circuit)?

- Repair options include repairing or replacing damaged wiring, replacing faulty speed wheel sensors, and addressing any issues with the ABS module.

6. Can bad weather conditions trigger OBDII code C1156?

- Yes, extreme weather conditions like heavy rain or snow can cause water damage to the speed wheel sensors or their wiring, triggering the code C1156.

7. Will resetting the OBDII code C1156 clear the issue permanently?

- Resetting the code may temporarily clear the warning light, but it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

8. Can a DIY enthusiast fix OBDII code C1156 at home?

- Depending on the root cause, DIY enthusiasts with the necessary tools and knowledge about automotive electrical systems may be able to address the issue at home.

9. How much does it typically cost to repair OBDII code C1156 at a mechanic or dealership?

- The cost of repairing OBDII code C1156 can vary widely depending on the specific issue, but it may range from around $100 to $500 or more at a mechanic or dealership.

10. Are there any preventative maintenance tips to avoid triggering OBDII code C1156?

- Regularly inspecting the speed wheel sensors and their wiring for damage, and ensuring they are securely mounted can help prevent issues leading to code C1156.

Discuss the causes and fixes for C1156 OBDII Code

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