The B1244 code signifies a problem in the automatic light control sensor circuit, which is responsible for detecting ambient light and controlling the headlights and taillights.
This code indicates potential issues with the sensor, wiring harness, electrical connections, or main body ECU.
Common symptoms include the illumination of the engine or service engine soon lights.
To address the issue, it is advisable to visually inspect the wiring and seek assistance from a professional for accurate repairs.
B1244 Code: Light Sensor Circuit Malfunction
What does it mean
The B1244 code indicates a malfunction in the automatic light control sensor circuit. This sensor detects ambient light and sends a signal to the main body ECU to control the headlights and taillights.
A faulty sensor can affect visibility and safety. Regular maintenance and inspection of the light sensor circuit are crucial for optimal functioning and road safety.
What are the symptoms
The B1244 code can cause certain symptoms in your vehicle. These symptoms may include the Engine Light (or Service Engine Soon Warning Light) turning on and changes in how your vehicle performs. Here are some possible signs to watch out for:
- Rough idling: Your engine may not run smoothly and may have an inconsistent idle speed.
- Poor acceleration: Your vehicle may have difficulty speeding up or may feel weak.
- Erratic shifting: If the code affects your transmission, you may notice rough or delayed gear changes.
- Electrical issues: The faulty automatic light control sensor can potentially damage other electrical parts, resulting in problems like headlights flickering or taillights not working properly.
What are the causes
Possible causes of the B1244 code include a faulty automatic light control sensor. Here are some potential causes:
- Faulty Automatic Light Control Sensor: The sensor may not be working properly and might not accurately detect ambient light.
- Damaged Wiring Harness: The wiring harness that connects the sensor could be open or shorted, possibly due to damage.
- Poor Electrical Connection: There might be a weak electrical connection between the sensor and the main body ECU, leading to a malfunction.
- Faulty Main Body ECU: The main body ECU, responsible for controlling the headlights and taillights based on the sensor’s signal, could be defective.
What Tools are Needed to diagnose
To diagnose the B1244 code accurately, specialized diagnostic tools are needed. Here are the tools required for diagnosing the issue:
- Scan Tool: A scan tool is necessary to retrieve the B1244 code from the vehicle’s onboard computer. It allows technicians to access diagnostic trouble codes (DTCs) and view live data to pinpoint the exact cause of the problem.
- Multimeter: A multimeter is used to test the voltage, resistance, and continuity of the Automatic Light Control Sensor circuit. This helps determine if the sensor is functioning properly or if there are any electrical issues.
- Wiring Diagram: A wiring diagram is crucial for identifying the specific wires and connectors associated with the Automatic Light Control Sensor and the Main Body ECU. It aids in troubleshooting and locating any open circuits or shorts.
- Oscilloscope: An oscilloscope may be needed to test the output signal of the Automatic Light Control Sensor. This tool helps visualize the electrical waveform and identify any abnormalities.
How to fix Step by Step
Step 1: Start by visually inspecting the wiring harness and connectors for any signs of damage. Look for broken, bent, pushed out, or corroded connector pins.
Step 2: Ensure that all components are in good condition and properly connected.
Step 3: Use specialized diagnostic tools to test the sensor’s electrical signal and verify its functionality. Follow the manufacturer’s instructions for the specific diagnostic tool.
Step 4: If any issues are detected during the diagnostics, refer to the manufacturer’s repair manual or seek professional diagnosis for accurate assessment and repair.
Step 5: Perform regular maintenance for automatic light control sensors to prevent malfunctions. Follow the manufacturer’s recommended maintenance schedule.
What are the Common Diagnosis Mistakes
When diagnosing the B1244 code, it is important to be aware of common mistakes that can occur during the diagnostic process. Here are some tips for accurate diagnosis and possible underlying issues causing the B1244 code:
- Make sure to visually inspect the related wiring harness and connectors: Take a close look at the wiring harness and connectors to check for any signs of damage, such as frayed wires or loose connections.
- Don’t forget to check for damaged components: Some components, like the automatic light control sensor or the main body ECU, may be faulty and need to be replaced.
- Pay attention to broken, bent, pushed out, or corroded connector pins: Over time, connector pins can become damaged or corroded, leading to poor electrical connections. Thoroughly inspect and clean or replace them if necessary.
- Seek professional diagnosis if needed: If the cause of the B1244 code is not obvious or the repairs require specialized knowledge or tools, it is important to seek the help of a professional technician for accurate diagnosis and repair.
What is the Repair Cost
The repair cost for the B1244 code varies depending on factors such as location, vehicle make/model, and extent of repairs.
On average, expect to pay $75-$150 per hour for labor. Prices may differ based on diagnosis time, labor rates, parts, and technician expertise.
Consult a professional for accurate pricing.
Can I drive safely with this code?
Driving safely with the B1244 code depends on the specific symptoms and extent of the malfunction in the light sensor circuit. If the malfunction affects the headlights and taillights, it can compromise visibility and safety.
It is recommended to have the issue diagnosed and repaired promptly to ensure safe driving conditions. Avoid resetting the code yourself; consult a professional technician.
Wrapping Up: B1244 Code
The B1244 code indicates a malfunction in the automatic light control sensor circuit. This can be caused by issues such as a faulty sensor, open or shorted harness, poor electrical connection, or a malfunctioning main body ECU.
Symptoms can include an illuminated engine light or a service engine soon warning light.
It is important to seek professional diagnosis and consult with a professional for accurate pricing and repairs.