B124C Toyota Code - Automatic High Beam Camera
Quick Answer
This Diagnostic Trouble Code (DTC) is stored when the Main Body ECU (Multiplex Network Body ECU) detects a malfunction in the Forward Recognition Camera. Common causes include Faulty Forward Recognition Camera, Forward Recognition Camera harness is open or shorted, Forward Recognition Camera circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- B124C Toyota indicates Automatic High Beam Camera.
- Common causes
- Common causes include Faulty Forward Recognition Camera, Forward Recognition Camera harness is open or shorted, Forward Recognition Camera circuit poor electrical connection.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code B124C Toyota Description
What are the Possible Causes of the DTC B124C Toyota?
- Faulty Forward Recognition Camera
- Forward Recognition Camera harness is open or shorted
- Forward Recognition Camera circuit poor electrical connection
- Faulty Main Body ECU (Multiplex Network Body ECU)
How to Fix the DTC B124C Toyota?
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.
Code Tech Notes
If the forward recognition camera has been replaced with a new one, be sure to perform Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B124C Toyota 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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Information for Specific Toyota Models
- B124C 2013 Toyota RAV4 — Automatic High Beam Camera
- B124C 2014 Toyota RAV4 — Automatic High Beam Camera
- B124C 2015 Toyota RAV4 — Automatic High Beam Camera
- B124C 2016 Toyota RAV4 — Automatic High Beam Camera
- B124C 2017 Toyota RAV4 — Automatic High Beam Camera
- B124C 2018 Toyota RAV4 — Automatic High Beam Camera
Frequently Asked Questions about B124C Toyota Code
1. What does the OBDII code B124C indicate on a Toyota?
The code B124C in a Toyota indicates a malfunction related to the Automatic High Beam Camera, which is responsible for controlling the vehicle's high beam headlights automatically.
2. What are the common symptoms of code B124C in Toyota vehicles?
Common symptoms include the automatic high beam system not functioning, the high beam indicator light blinking or remaining off, and a possible fault warning light on the dashboard.
3. What causes the B124C code to appear on a Toyota?
The B124C code can be triggered by a few different issues, including a faulty automatic high beam camera, obstruction or damage to the camera lens, a malfunctioning headlamp control module, or wiring issues related to the camera system.
4. How can I troubleshoot the B124C code on my Toyota?
To troubleshoot, start by visually inspecting the camera lens for obstructions or damage. Check the wiring and connectors for breaks or disconnections. If no physical issues are found, diagnostic scanning tools may be needed to further diagnose the problem or to check for additional fault codes.
5. What repair steps should be taken to resolve the B124C code on a Toyota?
Repair steps might include cleaning or replacing the camera lens if obstructed or damaged, repairing or replacing any faulty wiring or connectors, and potentially replacing the automatic high beam camera or the headlamp control module if found to be defective.
6. Is it safe to drive a Toyota with the B124C code active?
While it may be safe to drive with this code active, you will likely experience reduced functionality of your vehicle's automatic high beam system, which could impact driving safety in low-light conditions. It is advisable to address the issue promptly.
7. How can I prevent the B124C code from occurring in my Toyota?
Preventative measures include keeping the camera lens clean and free from obstructions, ensuring that windshield repairs or replacements are done correctly (as they can affect the camera's view), and regularly checking the headlamp system and associated wiring for signs of wear or damage.
8. Could the B124C code affect other systems in my Toyota?
Although the B124C code primarily affects the automatic high beam system, it could potentially cause issues with other related driver assistance systems if they rely on the same camera or sensor inputs, like some adaptive lighting or lane-keeping systems.
9. Will recalibrating the automatic high beam camera fix the B124C code?
Recalibration might resolve the issue if the error is due to misalignment or incorrect installation of the camera. However, if the camera itself is damaged or there is a deeper electrical issue, recalibration alone will not fix the code.
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