Mitsubishi: B1766

If you own a Mitsubishi vehicle—whether it’s an Outlander, Lancer, Eclipse Cross, or ASX—and your scan tool has just flashed the code, you are likely dealing with a communication breakdown within your vehicle’s safety restraint system.

This article provides a deep dive into what the B1766 code means, what causes it, how to diagnose it step-by-step, and the exact cost to fix it. mitsubishi b1766

This guide is for informational purposes. Airbag systems contain explosives. If you are not 100% confident in your electrical skills, take your Mitsubishi to a certified technician. If you own a Mitsubishi vehicle—whether it’s an

Before replacing expensive parts, check for open recalls. Mitsubishi issued several recalls for OCS sensor failures in Outlander and Lancer models (Recall numbers SR-10-004, SR-15-003). If your VIN is affected, the dealership will fix B1766 for free. Airbag systems contain explosives

The B1766 code is a security-related fault. In modern Mitsubishi models (such as the Pajero, L200, and Outlander), the or the Immobilizer-ECU stores this code when it detects an unauthorized key trying to start the engine.