Engine-Codes - Generic - C1138

C1138 Code - 4-Wheel Active Steer Circuit

- Code Popularity: 18,150 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC C1138?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Anti-Lock Brake System (ABS) Actuator and Control Unit
  • 4WAS System
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How to Fix the DTC C1138?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the C1138 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the C1138 Code Mean?

The ABS actuator and electric unit (control unit) and the 4-Wheel Active Steer (4WAS) control unit exchange signals via the Controlled Area Network (CAN) communication line.

C1138 Code - 4-Wheel Active Steer Circuit

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Code C1138 Information for Specific Makes

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