B1380 indicates the vehicle has detected an electrical fault in the circuit for the oil-life reset button or switch. This usually means the signal from the reset button is missing, shorted, or out of range, so the system cannot register a manual reset of the oil change reminder.
The button itself can wear out, stick, or fail internally, preventing it from sending the reset signal. This is the most common cause for a dedicated circuit-failure code.
Chafed, pinched, corroded, or disconnected wires and terminals can create an open, short-to-ground, or short-to-power that the module sees as a circuit failure.
A loose, corroded, or broken ground connection can keep the button input from reaching the correct voltage, causing the circuit to read as failed.
If the reset button is built into the cluster or information center, an internal failure in that assembly can set this code even though the wiring is intact.
On vehicles where the module reads the switch input directly, a rare internal module fault can misread the circuit. This should only be considered after the switch, wiring, and grounds have been ruled out.
No. This is a body/instrument panel input circuit code, not an engine management code. Replacing the PCM/ECM is almost never the correct fix; focus on the reset button, wiring, grounds, and the cluster or information center assembly.
Yes. This code does not affect engine performance or safety. The main risk is that the oil change reminder cannot be reset electronically, so oil life should be tracked manually until the fault is repaired.
No. The code refers to an electrical fault in the reset button circuit, not the condition of the oil. The oil can be fresh and the code will remain until the circuit problem is resolved.
On some vehicles the reminder can be reset through a scan tool or by following a specific key-cycle procedure, but that depends on the vehicle design. If the input circuit is failed, even an alternate procedure may not work until the circuit is repaired.