Check engine warning lampCheck engine warning lamp  - Warning lamps - Instruments and controls - Mitsubishi Lancer Owner's Manual - Mitsubishi Lancer

This lamp is a part of an onboard diagnostic system which monitors the emissions,

This lamp is a part of an onboard diagnostic system which monitors the emissions, engine control system or CVT control system/Twin Clutch SST control system.

If a problem is detected in one of these systems, this lamp illuminates or flashes.

Although your vehicle will usually be drivable and not need towing, we recommend you to have the system checked as soon as possible.

This lamp will also illuminate when the ignition switch is turned “ON”, and goes off after the engine has started. If it does not go off after the engine has started, we recommend you to have the vehicle checked.

► Prolonged driving with this lamp on may cause further damage to the emission Caution

► Prolonged driving with this lamp on may cause further damage to the emission control system.

It could also affect fuel economy and drivability.
► If the lamp does not illuminate when the ignition switch is turned to the “ON” position, we recommend you to have the system checked.
► If the lamp illuminates while the engine is running, avoid driving at high speeds and we recommend you to have the system checked.
Accelerator pedal and brake pedal response may be negatively influenced under these conditions.

► The engine electronic control module accommodating the onboard diagnostic system Note

► The engine electronic control module accommodating the onboard diagnostic system has various fault data (especially about the exhaust emission) stored.
This data will be erased if a battery cable is disconnected which will make a rapid diagnosis difficult.

Do not disconnect a battery cable when the check engine warning lamp is ON.

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