OBD Guide
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B1244

Light Sensor Circuit Malfunction

B1244 is an OBD-II diagnostic trouble code meaning: Light Sensor Circuit Malfunction. Common causes: faulty light sensor, open or short circuit in wiring harness. Estimated repair cost: $56–167.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Incorrect operation of automatic headlights
  • Headlights do not turn on automatically in the dark
  • Headlights stay on during the day
  • Error message on the dashboard

Causes

  • Faulty light sensor
  • Open or short circuit in wiring harness
  • Oxidized contacts in connectors
  • Problems with the lighting control unit
  • Incorrect sensor calibration

How to Fix

  1. Visual inspection of the sensor and wiring
  2. Checking contacts in connectors
  3. Sensor resistance diagnostics
  4. Checking the voltage in the circuit
  5. Replace the sensor if necessary
  6. Reflashing the control unit (if required)

Related codes

B1245B1243U0121

FAQ

What does the B1244 code mean?

B1244 is an OBD-II diagnostic trouble code that indicates: Light Sensor Circuit Malfunction

What causes a B1244 error code?

The most common causes of B1244 include: Faulty light sensor; Open or short circuit in wiring harness; Oxidized contacts in connectors; Problems with the lighting control unit.

How do I fix a B1244 diagnostic trouble code?

To fix B1244: Visual inspection of the sensor and wiring. Checking contacts in connectors. Sensor resistance diagnostics. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1244?

Limited driving only, diagnose soon

How much does it cost to fix B1244?

The estimated repair cost for B1244 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat