AutoCodesLexus – C1AB6 Lexus

C1AB6 Lexus Code - Blind Spot Monitor Master Module

Quick Answer

This Diagnostic Trouble Code (DTC) is stored when the Blind Spot Monitor Sensor Left (LH) detects an internal malfunction. Common causes include Faulty Blind Spot Monitor Sensor Left (LH), Blind Spot Monitor Sensor Left (LH) harness is open or shorted, Blind Spot Monitor Sensor Left (LH) 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
C1AB6 Lexus indicates Blind Spot Monitor Master Module.
Common causes
Common causes include Faulty Blind Spot Monitor Sensor Left (LH), Blind Spot Monitor Sensor Left (LH) harness is open or shorted, Blind Spot Monitor Sensor Left (LH) 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.
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Code Popularity 642
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 13, 2023
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Code C1AB6 Lexus Description

This Diagnostic Trouble Code (DTC) is stored when the Blind Spot Monitor Sensor Left (LH) detects an internal malfunction.
OBDII Code C1AB6 Lexus - Blind Spot Monitor Master Module - AutoCodes.com
C1AB6 Lexus Code - Blind Spot Monitor Master Module

What are the Possible Causes of the DTC C1AB6 Lexus?

  • Faulty Blind Spot Monitor Sensor Left (LH)
  • Blind Spot Monitor Sensor Left (LH) harness is open or shorted
  • Blind Spot Monitor Sensor Left (LH) circuit poor electrical connection

How to Fix the DTC C1AB6 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 C1AB6 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.

Need more information about the C1AB6 Lexus code?

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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 C1AB6 Lexus Code

1. What does the OBDII code C1AB6 mean on a Lexus?

The code C1AB6 indicates an issue with the Blind Spot Monitor (BSM) Master Module, often related to communication, calibration, or sensor performance.

2. What are common symptoms of the C1AB6 code on a Lexus?

Symptoms may include the Blind Spot Monitor system not functioning, warning lights on the dashboard, or error messages on the vehicle’s display.

3. What causes the C1AB6 code to appear in a Lexus?

Common causes include a malfunctioning BSM master module, damaged wiring, faulty sensors, or misaligned radar sensors.

4. Can I still drive my Lexus with the C1AB6 code active?

Yes, the vehicle is usually drivable, but the Blind Spot Monitor system may not work, increasing the risk of an accident during lane changes.

5. How do you diagnose the C1AB6 code on a Lexus?

Diagnosis involves scanning the vehicle with an OBDII tool to confirm the code, inspecting the module and wiring for damage, and checking sensor alignment and calibration.

6. How is the C1AB6 code on a Lexus fixed?

Repairs may include reprogramming or replacing the BSM master module, repairing damaged wiring, or recalibrating the sensors.

7. How much does it cost to repair the C1AB6 code on a Lexus?

Repair costs can range from $150 to $1,000, depending on whether the issue involves simple recalibration, wiring repairs, or module replacement.

8. Can I fix the C1AB6 code on my Lexus myself?

Some issues, like cleaning connectors or inspecting visible wiring, can be done by DIYers, but sensor calibration or module replacement typically requires professional tools.

9. Is the C1AB6 code covered under warranty for a Lexus?

If your vehicle is under warranty, the repair may be covered, especially if it involves a defective module or sensor.

10. How can I prevent the C1AB6 code from appearing on my Lexus?

Regular maintenance, avoiding damage to the sensors, and ensuring proper alignment after accidents or repairs can help prevent this code.

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