AutoCodes – Generic – B1244

B1244 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 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.

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Code Popularity 21,680

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1244 Description

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). The main body ECU (Multiplex Network Body ECU) turns the headlights and taillights on or off according to the signal.

OBDII Code B1244 - Light Sensor Circuit Malfunction - AutoCodes.com — B1244 Code - Light Sensor Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC B1244?

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?

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 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 B1244 code?

Need more information on how to fix the B1244 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1244 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1244 Acura — Open In The Rear Air Mix Control Motor Circuit
B1244 Honda — Open In The Rear Air Mix Control Motor Circuit
B1244 Lexus — Light Sensor Circuit Malfunction
B1244 Scion — Light Sensor Circuit Malfunction
B1244 Toyota — Light Sensor Circuit Malfunction

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 B1244 Code

1. What are the common symptoms of OBDII code B1244 (Light Sensor Circuit Malfunction)?

- Common symptoms include issues with automatic headlights, erratic behavior of interior lights, or the illumination of the "Check Engine" light.

2. What are the possible causes of OBDII code B1244?

- The code B1244 may be triggered by a faulty light sensor, damaged wiring in the light sensor circuit, or a malfunctioning control module.

3. How can I diagnose the Light Sensor Circuit Malfunction causing OBDII code B1244?

- You can diagnose the issue by checking the condition of the light sensor, inspecting the wiring for any damage, and using a diagnostic tool to read the code and reset it for testing purposes.

4. Can a DIY enthusiast repair OBDII code B1244 at home?

- Depending on your skill level and access to tools, a DIY enthusiast may be able to repair the Light Sensor Circuit Malfunction by replacing the faulty light sensor or repairing damaged wiring.

5. Is it safe to continue driving with OBDII code B1244 triggered?

- It is generally safe to drive with OBDII code B1244 triggered, but it is recommended to address the issue promptly to avoid any potential safety hazards or further damage to the vehicle.

6. Will OBDII code B1244 cause any damage to other components of the vehicle if left unrepaired?

- Leaving OBDII code B1244 unrepaired may not cause immediate damage to other components, but it can lead to issues with the vehicle's lighting system and potentially affect overall driving visibility.

7. How much does it typically cost to repair OBDII code B1244?

- The cost of repairing OBDII code B1244 can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Are there any preventative measures to avoid triggering OBDII code B1244 in the future?

- Regular maintenance checks, keeping the light sensor clean, and promptly addressing any lighting system issues can help prevent the recurrence of OBDII code B1244.

9. Can extreme weather conditions affect the triggering of OBDII code B1244?

- Yes, extreme weather conditions such as heavy rain, snow, or intense sunlight can sometimes impact the performance of the light sensor and potentially trigger OBDII code B1244.

10. How long does it typically take to repair OBDII code B1244?

- The repair time for OBDII code B1244 can vary depending on the complexity of the issue, but it may take anywhere from 1 to 3 hours for a professional technician to diagnose and fix the problem.