What Does B2182 Mean?
This code indicates that the Body Control Module (BCM) has detected a short circuit to battery voltage on the passenger front window remote up switch circuit. The BCM monitors switch inputs and expects specific voltage ranges; when it detects constant battery voltage on this input instead of a switching ground or variable voltage signal, it sets this fault. This typically means current is flowing through the switch circuit when it shouldn't be, preventing normal window operation or causing unintended window movement.
Common Causes
35%
Damaged or pinched wiring harness causing exposed wire contact with battery voltage in door jamb or behind door panel
30%
Faulty passenger front window switch assembly with internal short circuit
20%
Water or liquid intrusion into switch assembly or connector causing cross-circuit voltage leak
10%
Damaged or corroded connector terminals at BCM or switch causing voltage feedback
5%
Failed Body Control Module with internal circuit fault on switch input channel
Diagnostic Steps
1
Step 1: Visually inspect passenger front window switch assembly for signs of liquid intrusion, damage, or stuck buttons. Remove switch from door panel and check for moisture, corrosion, or burnt contacts.
2
Step 2: Disconnect the passenger front window switch connector and use a digital multimeter to measure voltage on the BCM side of the harness connector at the up switch signal wire (consult wiring diagram for pin location). Should read 0-5V with switch disconnected, not battery voltage (12V+).
3
Step 3: With switch still disconnected, wiggle and flex the door wiring harness from door jamb through door panel while monitoring voltage. If voltage spikes to battery voltage during movement, harness has internal short to power.
4
Step 4: If harness tests good, measure resistance of the switch itself in both pressed and released positions. Up switch should show open circuit (infinite resistance) when released and continuity to ground when pressed. Constant low resistance or voltage indicates failed switch.
5
Step 5: Inspect all connector terminals for corrosion, bent pins, or spread female terminals that may allow cross-connection. Clean with electrical contact cleaner and dielectric grease.
6
Step 6: After repairs, clear codes and cycle window switch through all positions multiple times. Verify code does not return and window operates normally in both auto and manual modes.
Estimated Repair Cost
$75 - $400
Parts + labor, varies by vehicle and location
This code indicates that the Body Control Module (BCM) has detected a short circuit to battery voltage on the passenger front window remote up switch circuit. The BCM monitors switch inputs and expects specific voltage ranges; when it detects constant battery voltage on this input instead of a switc...
The most common cause of B2182 (Window Passenger Front Remote Up Switch Short to Battery) is: Damaged or pinched wiring harness causing exposed wire contact with battery voltage in door jamb or behind door panel
Typical repair costs for B2182 range from $75 to $400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this only affects passenger window operation convenience feature. Window may not function properly or may operate unexpectedly, but does not impact vehicle safety systems. Repair at convenience to restore full window functionality.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B2182 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 System / Power Window System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
