What Does B1341 Mean?
This code indicates the Body Control Module (BCM) has detected an abnormal short-to-ground condition in the power door unlock circuit. When the BCM commands the door unlock function, it monitors circuit resistance and current flow; this fault occurs when the circuit voltage drops to ground level unexpectedly, indicating damaged wiring or a failed actuator drawing excessive current. This prevents proper door unlock operation and may cause blown fuses or other electrical protection devices to activate.
Common Causes
45%
Damaged or chafed wiring in door harness causing short to ground, especially at door hinge area where wires flex repeatedly
30%
Failed door lock actuator with internal short circuit drawing excessive current to ground
15%
Corroded or water-damaged door lock actuator connector causing short path to ground
10%
Failed Body Control Module internal driver circuit for unlock relay shorted internally
Diagnostic Steps
1
Step 1: Perform visual inspection of all door wiring harnesses, especially at hinge areas and door jambs, looking for pinched, chafed, or damaged insulation. Check for water intrusion in door panels and connectors.
2
Step 2: Disconnect all door lock actuator connectors one at a time while monitoring the fault status. Use a digital multimeter to measure resistance from the unlock circuit wire to ground at the BCM connector with actuators disconnected; should read open circuit (OL). If short remains with all actuators disconnected, wiring harness is faulty.
3
Step 3: With actuators disconnected and short isolated to specific door, measure resistance of suspect door lock actuator unlock terminal to ground; should be greater than 10 ohms. Resistance below 5 ohms indicates failed actuator with internal short.
4
Step 4: If all actuators and wiring test normal, inspect BCM connector for corrosion or bent pins. Check BCM unlock output circuit with multimeter in current mode during unlock command; normal draw is 3-8 amps total for all doors. Excessive current indicates BCM driver failure.
5
Step 5: Repair identified short circuit by replacing damaged wiring section, failed actuator, or corroded connector. Clear codes and cycle door locks 10-15 times to verify repair, monitoring for code return and proper operation of all doors.
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected an abnormal short-to-ground condition in the power door unlock circuit. When the BCM commands the door unlock function, it monitors circuit resistance and current flow; this fault occurs when the circuit voltage drops to ground level une...
The most common cause of B1341 (Power Door Unlock Circuit Short To Ground) is: Damaged or chafed wiring in door harness causing short to ground, especially at door hinge area where wires flex repeatedly
Typical repair costs for B1341 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this affects convenience functions only. The primary concern is potential inability to unlock doors from power controls, though manual lock operation typically remains functional. Repair within reasonable timeframe to maintain security and convenience features.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1341 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Body
System
Body Control and Door Lock System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
