What Does B1832 Mean?
This code indicates the Body Control Module (BCM) has detected a short to battery voltage in the door unlock/disarm switch circuit. The BCM monitors this circuit for proper voltage levels, and when voltage exceeds expected parameters (typically due to a direct connection to battery positive), it sets this fault. This affects the vehicle's security and door lock system functionality.
Common Causes
40%
Damaged or chafed wiring harness in door jamb causing wire insulation to wear through and contact battery voltage
30%
Faulty door unlock switch with internal short circuit connecting switch output to power supply
20%
Water intrusion or corrosion in door lock module or switch connector causing cross-circuit short
10%
Failed Body Control Module with internal circuit fault on door unlock input circuit
Diagnostic Steps
1
Step 1: Perform visual inspection of door jamb wiring harnesses on all doors, looking for pinched, chafed, or damaged wiring where harness flexes between door and body. Check for exposed copper wire or damaged insulation
2
Step 2: Disconnect door unlock switch connector at affected door and measure voltage at BCM side of circuit using multimeter. Should read 0V with switch disconnected; battery voltage present confirms short in wiring harness between switch and BCM
3
Step 3: If no voltage present at BCM side with switch disconnected, test door unlock switch by measuring resistance across switch terminals. Replace switch if resistance indicates internal short to power circuit or abnormal readings
4
Step 4: Inspect all door lock module and switch connectors for water intrusion, corrosion, or pin contact damage. Clean connectors with electrical contact cleaner and apply dielectric grease if corrosion is found
5
Step 5: If all wiring and switches test normal, perform BCM voltage supply tests to verify proper power and ground circuits. Check BCM connector for water damage, corrosion, or backed-out pins
6
Step 6: Clear codes and verify repair by cycling door locks multiple times and monitoring live data for proper switch operation without voltage faults returning
Estimated Repair Cost
$100 - $600
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected a short to battery voltage in the door unlock/disarm switch circuit. The BCM monitors this circuit for proper voltage levels, and when voltage exceeds expected parameters (typically due to a direct connection to battery positive), it set...
The most common cause of B1832 (Door Unlock Disarm Switch Circuit Short To Battery) is: Damaged or chafed wiring harness in door jamb causing wire insulation to wear through and contact battery voltage
Typical repair costs for B1832 range from $100 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive. This fault may prevent proper door unlocking operation, security system disarming, or remote keyless entry function. Repair at earliest convenience to maintain security system functionality.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1832 to identify the root cause.
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Quick Info
Category
Body
System
Body Control / Security System
Difficulty
Type
Manufacturer
Recommended Tools
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