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  2. Check engine light - Wikipedia

    en.wikipedia.org/wiki/Check_engine_light

    A check engine light or malfunction indicator lamp (MIL), is a tell-tale that a computerized engine-management system used to indicate a malfunction or problem with the vehicle ranging from minor (such as a loose gas cap) to serious (worn spark plugs, engine problems or a faulty oil valve, etc.).

  3. Tell-tale (automotive) - Wikipedia

    en.wikipedia.org/wiki/Tell-tale_(automotive)

    The light normally appears when the vehicle ignition is turned on, but the engine is not running, as it detects no oil pressure due to the oil pump not operating (the oil pump is powered off the crankshaft, so only operates when the engine is running). It normally turns off a few seconds after engine start as the oil pump starts working and ...

  4. Powertrain control module - Wikipedia

    en.wikipedia.org/wiki/Powertrain_control_module

    It is generally a combined controller consisting of the engine control unit (ECU) and the transmission control unit (TCU). On some cars, such as many Chryslers, there are multiple computers: the PCM, the TCU, and the Body Control Module (BCM), for a total of three separate computers. These automotive computers are generally very reliable.

  5. Warning light - Wikipedia

    en.wikipedia.org/wiki/Warning_light

    Warning light may refer to: Aircraft warning lights, a device used on radio masts and towers and other tall structures to prevent collisions; Idiot light, an indicator of malfunction of a system within a motor vehicle, especially if used to replace a gauge Check engine light, to indicate malfunction of a computerized engine management system

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  7. Indicator lamp - Wikipedia

    en.wikipedia.org/wiki/Indicator_lamp

    An indicator lamp (or indicator light) is an illuminated device that is intended to visually convey a single status to the user of a piece of equipment. Indicator lamp may refer to: Check engine light, a tell-tale warning light in automobiles; Tell-tale (automotive), a more generic class of indicators

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