What Does B1567 Mean?
This code indicates the Body Control Module (BCM) has detected an electrical fault in the high-beam headlamp circuit. The BCM monitors current flow and voltage in the high-beam system and has identified an open circuit, short circuit, excessive resistance, or component failure that prevents proper high-beam operation. This is a manufacturer-specific body code that relates to the lighting control system managed by the BCM.
Common Causes
35%
Burned out high-beam bulb or poor bulb socket connection with corrosion
30%
Damaged wiring harness or corroded connector between BCM and high-beam lamp
20%
Faulty high-beam relay or relay socket with poor contact
10%
Failed Body Control Module (BCM) internal high-beam driver circuit
5%
Poor ground connection at headlamp assembly or ground distribution point
Diagnostic Steps
1
Step 1: Perform visual inspection of both high-beam bulbs and sockets for obvious failure, burn marks, or corrosion. Remove bulbs and check for broken filaments and verify proper bulb type is installed.
2
Step 2: Using a digital multimeter, check for battery voltage at the high-beam bulb connector with high-beams activated. If no voltage present, move upstream toward the relay or BCM. If voltage present, check ground circuit continuity (should be less than 0.5 ohms).
3
Step 3: Locate and test the high-beam relay (if equipped). Check for battery voltage at relay power supply terminal and BCM control signal at trigger terminal when high-beams are commanded on. Swap relay with known good relay of same type if available.
4
Step 4: Inspect wiring harness from headlamp assembly to BCM for chafing, pinched wires, or damaged insulation. Pay special attention to areas near the fender, firewall, and where harness passes through grommets.
5
Step 5: Check BCM connector terminals for corrosion, pushed-back pins, or moisture intrusion. Measure resistance of high-beam circuit from BCM connector to bulb socket (should be less than 5 ohms total).
6
Step 6: After repairs, clear codes and cycle high-beams multiple times to verify proper operation. Monitor live data for high-beam circuit status and current draw (typically 8-12 amps for halogen, 3-5 amps for LED systems).
Estimated Repair Cost
$75 - $450
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected an electrical fault in the high-beam headlamp circuit. The BCM monitors current flow and voltage in the high-beam system and has identified an open circuit, short circuit, excessive resistance, or component failure that prevents proper h...
The most common cause of B1567 (Lamp Headlamp High-Beam Circuit Failure) is: Burned out high-beam bulb or poor bulb socket connection with corrosion
Typical repair costs for B1567 range from $75 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive during daylight hours, but reduced nighttime visibility with only low-beams operational creates a safety hazard, especially on dark roads. Repair should be completed promptly before nighttime driving to maintain proper illumination and visibility.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1567 to identify the root cause.
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Quick Info
Category
Body
System
Exterior Lighting System
Difficulty
Type
Manufacturer
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