Passenger Window Power Circuit Short to Ground
Code B2196 indicates a short-to-ground fault in the power supply circuit for the passenger window motor. The body control module (BCM) or window lift module has detected an abnormally low voltage or very low resistance to ground in the wiring that powers the passenger window motor. To prevent thermal damage to the motor or control module, the system cuts power to the circuit. This manufacturer-specific code falls under the SAE J2012 body code extension (B2xxx).
1. Commonly Affected Makes
2. Most Common Causes
- Short to ground in the passenger window motor wiring
- Internally shorted passenger window motor
- Moisture or corrosion in the window motor connector
- Physical damage to the door wiring harness (e.g., at the hinge area)
- Faulty body control module (BCM)
3. Symptoms You Will Notice
- Passenger window does not move or moves intermittently
- Window may stop working after a few cycles
- No response from passenger window switch
4. Step-by-Step Diagnosis
Inspect the door wiring harness, especially near the hinge, for breaks or chafing.
Check the passenger window motor connector for corrosion or moisture.
Test for continuity to ground on the motor power wire; if shorted, isolate the fault.
Measure motor resistance; if near zero ohms, replace the motor.
If wiring and motor are good, test BCM output signals; replace BCM if faulty.
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, it is generally safe to drive, but the passenger window will not operate. The electrical fault does not affect vehicle drivability.
How much does it cost to fix?▼
Repair costs typically range from $100 to $400, depending on whether the issue is a simple wiring repair or requires replacing the window motor or BCM.