C1AC1 Lexus Code - Master Module Horizontal Axis Misalignment
Quick Answer
This Diagnostic Trouble Code (DTC) is stored when the angle of the Blind Spot Monitor Sensor Left (LH) deviates more than the allowable range from the horizontal axis. Common causes include Faulty Blind Spot Monitor Sensor Left (LH). 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
- C1AC1 Lexus indicates Master Module Horizontal Axis Misalignment.
- Common causes
- Common causes include Faulty Blind Spot Monitor Sensor Left (LH).
- 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.
Code C1AC1 Lexus Description
What are the Possible Causes of the DTC C1AC1 Lexus?
- Faulty Blind Spot Monitor Sensor Left (LH)
How to Fix the DTC C1AC1 Lexus?
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 C1AC1 Lexus 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.
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Frequently Asked Questions about C1AC1 Lexus Code
1. What does the OBDII code C1AC1 mean on a Lexus?
The code C1AC1 indicates a "Master Module Horizontal Axis Misalignment," meaning the Advanced Driver Assistance System (ADAS) camera or sensor may be misaligned.
2. What are the common symptoms of the C1AC1 code on a Lexus?
Symptoms include warning lights on the dashboard, issues with lane-keeping assist or adaptive cruise control, and potential deactivation of certain ADAS features.
3. What causes the C1AC1 code to appear on a Lexus?
This code is typically caused by improper calibration of the forward-facing camera or sensor, physical impacts, mounting bracket damage, or misalignment during windshield replacement.
4. Can I drive my Lexus with the C1AC1 code active?
Yes, you can drive, but some safety features like lane-keeping assist and adaptive cruise control may not function properly, increasing the risk of accidents.
5. How is the C1AC1 code diagnosed on a Lexus?
A technician will use a scan tool to confirm the code, inspect the sensor's mounting and alignment, and verify that the camera calibration is correct.
6. How do you fix the C1AC1 code on a Lexus?
Fixing this code typically involves recalibrating the ADAS camera or sensor, repairing any damage to mounting brackets, or replacing a misaligned windshield.
7. Does a replaced windshield need recalibration to avoid the C1AC1 code?
Yes, if the windshield is replaced, the ADAS camera or sensor must be recalibrated to ensure correct alignment and functionality.
8. How much does it cost to fix the C1AC1 code on a Lexus?
The cost varies, but camera or sensor recalibration typically costs between $150 and $400. Additional repairs could increase the price.
9. Can the C1AC1 code clear on its own?
No, the code will not clear on its own; proper recalibration or repairs are required to resolve the issue.
10. Is the C1AC1 code related to a damaged ADAS camera?
It can be. Physical damage to the ADAS camera or its mounting hardware may lead to horizontal axis misalignment and trigger the C1AC1 code.
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