B2194: Passenger Rear Window Remote Down Short to Battery
The B2194 code indicates that the Body Control Module (BCM) has detected a short circuit to battery positive (B+) in the passenger rear window remote down switch circuit. This circuit enables remote window lowering, typically from the driver's master switch or via convenience features. The short to battery prevents proper switch operation and may cause unintended activation or complete failure of the remote down function.
1. Commonly Affected Makes
2. Most Common Causes
- Wiring for the remote down switch shorted to battery positive
- Passenger rear window switch internally damaged with a short to B+
- Body Control Module (BCM) with a faulty input circuit
- Corroded connector or harness splice, or bent pins causing circuit contact
- Aftermarket electrical modification to the window system
3. Symptoms You Will Notice
- Passenger rear window does not lower remotely
- Passenger rear window lowers unexpectedly or intermittently
- Remote down function inoperative from driver's switch or key fob
4. Step-by-Step Diagnosis
Scan for B2194 and any related codes; clear and retest to confirm active fault
Visually inspect the passenger rear window switch and harness for damage, corrosion, or aftermarket modifications
Using a multimeter, check for battery voltage on the remote down signal wire at the switch connector with the switch unplugged
If voltage is present, isolate the short by disconnecting the BCM and checking continuity to ground on the signal wire
If no voltage, test the switch for internal short by measuring resistance between the signal pin and B+ when the switch is not pressed
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, the vehicle is generally safe to drive. The fault only affects the passenger rear window remote down function, and the window can still be operated manually from its own switch.
How much does it cost to fix?▼
Repair costs typically range from $100 to $300, depending on whether the issue is a simple wiring repair or requires replacing the window switch or BCM.