Power Window RR Motor Circuit Short To Ground
The right rear power window motor has a direct electrical short to ground, like a wire touching the car's metal frame. The vehicle's computer detects abnormally high current flow and triggers this fault code.
The ECU monitors current draw through the right rear window motor circuit via a dedicated relay and sensing circuit. It compares actual current against expected operational thresholds to detect shorts to ground, which cause excessive current spikes.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Motor circuit current draw | 2-5 amps during window operation | Above 8-10 amps indicating short to ground |
| Circuit voltage | 12-14.5 volts | Voltage collapse below 10 volts under load |
Code B1425 is a low-severity fault. Your vehicle is generally safe to drive to a workshop for diagnosis. However, do not ignore it indefinitely — low-severity codes often indicate developing problems that become expensive if neglected. Book a diagnostic appointment within 2–4 weeks. If you notice any additional symptoms (rough running, power loss, unusual smells), treat it as higher priority.
Once the fault is repaired, B1425 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.