B1244 Lexus Code - Light Sensor Circuit Malfunction
Quick Answer
The automatic light control sensor detects ambient light, converts it into an electrical signal, and outputs it to the main body ECU (Multiplex Network Body ECU). Common causes include Faulty Automatic Light Control Sensor, Automatic Light Control Sensor harness is open or shorted, Automatic Light Control Sensor 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
- B1244 Lexus indicates Light Sensor Circuit Malfunction.
- Common causes
- Common causes include Faulty Automatic Light Control Sensor, Automatic Light Control Sensor harness is open or shorted, Automatic Light Control Sensor 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 B1244 Lexus Description
What are the Possible Causes of the DTC B1244 Lexus?
- Faulty Automatic Light Control Sensor
- Automatic Light Control Sensor harness is open or shorted
- Automatic Light Control Sensor circuit poor electrical connection
- Faulty Main Body ECU (Multiplex Network Body ECU)
How to Fix the DTC B1244 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 B1244 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 B1244 Lexus Code
1. What are the common symptoms of OBDII code B1244 in a Lexus related to the Light Sensor Circuit Malfunction?
The common symptoms include inaccurate or erratic readings from the light sensor, automatic headlights not functioning properly, and dashboard warning lights related to the lighting system.
2. What are the possible causes of the Light Sensor Circuit Malfunction (B1244) in a Lexus?
Possible causes of this code include a faulty light sensor, damaged wiring or connectors in the light sensor circuit, a malfunctioning control module, or a software issue.
3. How can I diagnose the Light Sensor Circuit Malfunction in my Lexus?
Diagnosing this issue involves using an OBDII scanner to retrieve the specific trouble code (B1244), inspecting the light sensor and its connections for damage, and testing the sensor's functionality using a multimeter.
4. Can I repair the Light Sensor Circuit Malfunction in my Lexus myself?
Depending on the root cause of the issue, DIY repairs may be possible. This could involve replacing the light sensor, repairing damaged wiring or connectors, or reprogramming the control module. However, if you are unsure, it's recommended to seek professional help.
5. Are there any quick fixes or temporary solutions for the B1244 code in a Lexus?
Quick fixes like resetting the vehicle's computer by disconnecting the battery or clearing the trouble code with an OBDII scanner may temporarily resolve the issue. However, these are not permanent solutions and the problem may reoccur.
6. How important is it to address the Light Sensor Circuit Malfunction in a Lexus?
Addressing the B1244 code promptly is important as it can affect the proper functioning of the vehicle's lighting system, including automatic headlights and other safety features. Ignoring the issue may lead to further complications.
7. Is it safe to drive my Lexus with the B1244 trouble code present?
While it may be safe to drive the vehicle with this code, it's not recommended as it can impact the reliability of the lighting system. It's best to address the underlying problem as soon as possible to ensure proper functionality.
8. How much does it typically cost to repair the Light Sensor Circuit Malfunction in a Lexus?
The cost of repairing the B1244 code can vary depending on the root cause of the issue, the extent of the damage, and whether you choose to DIY or seek professional help. Repair costs may range from a few hundred to over a thousand dollars.
9. Can extreme weather conditions affect the Light Sensor Circuit in a Lexus and trigger the B1244 code?
Yes, extreme weather conditions such as intense sunlight or heavy rain can potentially impact the performance of the light sensor and trigger the B1244 trouble code. It's important to keep the sensor clean and protected from such elements.
10. Will the B1244 code clear on its own after a certain period of time?
In some cases, the B1244 trouble code may clear on its own after several drive cycles if the underlying issue is resolved. However, if the problem persists, the code will remain stored in the vehicle's computer until addressed.
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