![]() These engine fault messages vary slightly by model: Your BMW goes into a self-preservation mode. It limits engine rpm, torque output, and vehicle speed. The BMW engine control unit (DME) takes further action to protect drivetrain components from damage by initiating reduced power or limp modes. When a component operates outside of normal parameters, the digital motor electronics (DME) module detects a fault and turns on a malfunction indicator light (MIL) or “check engine light” on the dashboard. Modern BMW models are equipped with sophisticated on-board diagnostics that constantly monitor critical vehicle systems, including the engine and transmission. What Triggers BMW Engine Malfunction Lights? You’ll also gain troubleshooting tips to diagnose BMW engine problems and learn definitive solutions to resolve power limitations when the check engine light comes on. ![]() The goal of this detailed guide is to help BMW drivers better understand the meaning behind common BMW error messages related to reduced engine power and limp mode. Many BMW owners face these power reducing engine faults at some point in their vehicle’s lifecycle. Having your BMW suddenly lose power and go into reduced power or limp mode can be puzzling, annoying, and make your vehicle unsafe in some situations, like merging onto a highway. What’s causing BMW drivetrain malfunctions leading to a loss of power? Read on to learn the top causes and solutions to restore your BMW’s engine to full power when warning lights dim your driving excitement. But when dashboard warnings flash about reduced engine power or the dreaded “limp mode” activates, that BMW performance and acceleration you love disappears. Your BMW was engineered for exhilarating speed and handling.
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