Power Window LR Motor Circuit Open
The left rear power window motor circuit has lost electrical connection, like a broken wire preventing power from reaching the motor. The vehicle's computer detected no signal or resistance where it expects to find an active motor circuit.
The body control module monitors current draw and voltage across the LR window motor circuit during operation. It expects measurable current flow when the switch is activated; an open circuit produces zero current and triggers the fault code.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Motor current draw | 2-8 amps during operation | 0 amps or no response |
| Circuit voltage | 12V supply available | No voltage detected at motor |
Code B1415 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, B1415 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.