What Does B2246 Mean?
This diagnostic trouble code indicates that the Body Control Module (BCM) has detected an abnormal electrical condition in the passenger sliding door ajar sensor circuit. Specifically, the circuit is showing a short to ground, meaning the signal wire is making unintended contact with the vehicle's chassis or ground pathway. This causes the BCM to continuously receive a ground signal, typically indicating the door is open even when it may be closed.
Common Causes
45%
Damaged or chafed wiring in the door jamb area where the harness flexes during door operation, causing intermittent or constant short to ground
30%
Faulty door ajar switch with internal short to ground or corroded terminals creating unintended ground path
15%
Water intrusion or corrosion in connectors at door switch or BCM causing short circuit to ground
10%
Failed Body Control Module with internal circuit fault or damaged BCM connector pin
Diagnostic Steps
1
Step 1: Perform visual inspection of the passenger sliding door ajar switch and wiring harness in the door jamb area, looking for obvious damage, chafing, pinched wires, or corrosion. Check rubber boot conduit for tears or wear.
2
Step 2: Disconnect the door ajar switch connector and use a digital multimeter to measure resistance from the signal wire terminal (at the harness side) to ground. Reading should be infinite ohms (open circuit); any measurable resistance indicates a short to ground in the wiring.
3
Step 3: If wiring tests good, measure resistance across the door ajar switch itself with door open and closed. Typical switch should show continuity to ground when door is open, open circuit when closed. Replace switch if readings are abnormal or if switch shows constant ground regardless of door position.
4
Step 4: If switch and visible wiring are intact, carefully flex and manipulate the door harness through its full range of motion while monitoring the circuit with multimeter for intermittent shorts. Pay special attention to areas where harness bends entering the door.
5
Step 5: Inspect BCM connector terminals for corrosion, bent pins, or water intrusion. Clean and apply dielectric grease if corrosion is present.
6
Step 6: After repair, clear codes, cycle the door open and closed multiple times, and verify the BCM correctly recognizes door status and that code does not return.
Estimated Repair Cost
$75 - $450
Parts + labor, varies by vehicle and location
This diagnostic trouble code indicates that the Body Control Module (BCM) has detected an abnormal electrical condition in the passenger sliding door ajar sensor circuit. Specifically, the circuit is showing a short to ground, meaning the signal wire is making unintended contact with the vehicle's c...
The most common cause of B2246 (Passenger Sliding Door Ajar Circuit Short to GND) is: Damaged or chafed wiring in the door jamb area where the harness flexes during door operation, causing intermittent or constant short to ground
Typical repair costs for B2246 range from $75 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this is a monitoring circuit fault that does not affect vehicle operation. The primary concern is that interior lights may remain on, warning chimes may sound continuously, and automatic sliding door operation may be disabled, potentially causing battery drain if left unattended.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B2246 to identify the root cause.
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Quick Info
Category
Body
System
Body Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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