B1390 - Ambient Light Control Module
Repair Importance Level:
Repair Difficulty Level:
B1390 Possible Causes
- Faulty Ambient Light Control Module
- Ambient Light Control Module harness is open or shorted
- Ambient Light Control Module circuit poor electrical connection
- Faulty Body Control Module (BCM)
First diagnose B1390 code
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Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.
B1390 Tech Notes
B1390:83 Ambient Light Control Module: Value of Signal Protection Calculation IncorrectB1390:87 Ambient Light Control Module: Missing Message
Cost of diagnosing the B1390 code
Labor: 1.0
The cost of diagnosing the B1390 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.B1390 Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B1390 Meaning
The Body Control Module (BCM) monitors the Ambient Light Control Module. The BCM sets the OBDII code when the Ambient Light Control Module is not to factory specifications.
B1390 More Information
Need more information on how to fix the B1390 code?Get Access to Factory Service Manuals
B1390 Information for specific makes
- B1390 BUICK Device Voltage Reference Input Circuit
- B1390 CADILLAC Device Voltage Reference Input Circuit
- B1390 CHEVROLET Device Voltage Reference Input Circuit
- B1390 FORD Ambient Light Control Module
- B1390 GMC Device Voltage Reference Input Circuit
- B1390 HYUNDAI Passenger Seat Track Position Sensor Short Or Short To Ground
- B1390 KIA Passenger Seat Track Position Sensor Short Or Short To Ground
- B1390 LINCOLN Ambient Light Control Module
- B1390 MERCURY Ambient Light Control Module