Passenger Sliding Door Ajar Circuit Short to Ground
The B2246 code indicates that the vehicle's control module has detected a short to ground in the passenger sliding door ajar circuit. This circuit monitors the door position via a switch or limit sensor that changes electrical state when the door opens or closes. A short to ground means the signal wire is contacting chassis ground, causing the module to permanently interpret the door as open or generate an invalid signal. This code falls under the body and convenience category of OBD-II codes.
1. Commonly Affected Makes
2. Most Common Causes
- Faulty or worn passenger sliding door ajar switch/sensor
- Signal circuit wiring shorted to chassis or ground
- Corroded, oxidized, or bent pins in the sensor connector
- Body control module (BCM) internal failure in the detection circuit
- Harness damage from chafing in the sliding door area
- Aftermarket accessories interfering with the circuit
3. Symptoms You Will Notice
- Door ajar warning light or message on the dash
- Interior lights staying on or not functioning properly
- Power sliding door may not operate correctly
- False door open indication affecting alarm or remote start
4. Step-by-Step Diagnosis
Scan for codes and verify B2246 is present
Visually inspect the sliding door ajar switch and connector for damage or corrosion
Check the signal wire for continuity to ground using a multimeter
Disconnect the switch and see if the short clears; if so, replace the switch
Inspect the wiring harness for chafing or pinched wires near the door hinge area
If wiring and switch are good, test the BCM input/output; replace BCM if faulty
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, it is generally safe to drive, but the door ajar warning may be annoying and interior lights may stay on, draining the battery. The power sliding door may not function properly.
How much does it cost to fix?▼
Repair costs typically range from $100 to $400, depending on the cause. A switch replacement is on the lower end, while BCM replacement can be higher.