When your Mitsubishi's check engine light illuminates, it's a critical signal indicating that the onboard diagnostics (OBD-II) have detected an issue--ranging from misfires (P030x errors) and oxygen sensor faults to fuel system or emission control issues (like a P0420 code)--that could affect engine performance and efficiency. This alert prioritizes data collection by communicating specific fault codes that help pinpoint the malfunction area, allowing technicians to efficiently address problems before they escalate. Routine diagnostics using an OBD-II scanner can translate these codes into actionable insights, ensuring timely maintenance and safeguarding the vehicle's operational integrity.
