Headlamp Left Low Beam
Table of contents
B1D00 LINCOLN Possible Causes
- Faulty Headlamp Left Low Beam
- Headlamp Left Low Beam harness is open or shorted
- Headlamp Left Low Beam circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code B1D00 LINCOLN?
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 connector’s pins.
Tech Notes
- B1D00:11 Left Low Beam Circuit Short to Ground
- B1D00:15 Left Low Beam Circuit Short to Battery or Open
Cost of diagnosing the B1D00 LINCOLN code
The cost of diagnosing the B1D00 LINCOLN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B1D00 LINCOLN Description
When the Body Control Module (BCM) receives a message that the headlamp switch is in the HEADLAMPS ON position and the multifunction switch is in the LOW BEAM position (or the autolamps feature has requested the headlamps on), the BCM provides voltage through the headlamp output circuits to the Left (LH) and Right (RH) low beam headlamps. The BCM also provides an overload protection of the low beam output circuits. When an excessive current draw is detected, the BCM disables the affected low beam circuit driver. This Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground from the LH low beam output circuit.