Autonomous Emergency Braking System Malfunction
What does C0207 mean?
The C0207 code means the vehicle's onboard diagnostic system has detected: Autonomous Emergency Braking System Malfunction. This is a critical severity code.
Common Symptoms
- AEB system warning on dashboard
- Forward collision warning disabled
- Pre-collision braking not available
- Sensor blocked or system fault message
- Multiple ADAS warning lights on
Probable Causes (Ranked by Likelihood)
- Forward-facing camera or radar sensor obstructed Very High
- Camera or radar sensor out of calibration High
- AEB control module software error Moderate
- Camera or radar unit hardware failure Low
Step-by-Step Diagnostic Procedure
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Clean windshield camera area and front radar sensor
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Scan AEB system for DTCs
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Check for recent windshield replacement affecting camera
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Verify camera and radar sensor calibration
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Check for AEB module software updates
Frequently Asked Questions
What triggers AEB system faults?
The most common trigger is a dirty windshield blocking the camera view or debris on the front radar sensor. Windshield replacement without proper camera recalibration is another frequent cause.
Does windshield replacement affect AEB?
Yes. After windshield replacement, the forward-facing camera must be recalibrated using specialized equipment. Without calibration, the AEB and other ADAS features will not function correctly.
How much does AEB calibration cost?
ADAS camera and radar calibration typically costs $200 to $500. It requires specialized targets and equipment, and is usually performed at a dealer or certified calibration center.