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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 uses 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. OBD-II PIDs - Wikipedia

    en.wikipedia.org/wiki/OBD-II_PIDs

    Engine run time for Auxiliary Emissions Control Device(AECD) 82: 130: 41 Engine run time for Auxiliary Emissions Control Device(AECD) 83: 131: 9 NOx sensor 84: 132: 1 Manifold surface temperature 85: 133: 10 NOx reagent system % 86: 134: 5 Particulate matter (PM) sensor 87: 135: 5 Intake manifold absolute pressure 88: 136: 13

  4. Best OBD-II Scanners for 2024, Tested - AOL

    www.aol.com/best-obd-ii-scanners-2023-223000386.html

    To manufacture a check-engine light, we unplugged the mass-airflow sensor on the Corolla, started the car, and verified that the light was on. Then we plugged in each scanner and evaluated the ...

  5. On-board diagnostics - Wikipedia

    en.wikipedia.org/wiki/On-board_diagnostics

    This OBD-II came in two models OBD-IIA and OBD-IIB. OBD-II standardization was prompted by emissions requirements, and though only emission-related codes and data are required to be transmitted through it, most manufacturers have made the OBD-II Data Link Connector the only one in the vehicle through which all systems are diagnosed and ...

  6. 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

  7. List of sensors - Wikipedia

    en.wikipedia.org/wiki/List_of_sensors

    Engine coolant temperature sensor; Hall effect sensor; Wheel speed sensor; Airbag sensors; Automatic transmission speed sensor; Brake fluid pressure sensor; Camshaft position sensor (CMP) Cylinder Head Temperature gauge; Engine crankcase pressure sensor; Exhaust gas temperature sensor; Fuel level sensor; Fuel pressure sensor; Knock sensor ...

  8. Exhaust gas analyzer - Wikipedia

    en.wikipedia.org/wiki/Exhaust_gas_analyzer

    It is a measure of the efficiency of the gasoline engine by measuring the percentage of oxygen in the exhaust. When gasoline engines operate with a stoichiometric mixture of 14.7: 1 the value of lambda (λ) is "1". Mixing ratio = weight of fuel / weight of air - Expressed as mass ratio: 14.7 kg of air per 1 kg. of fuel.

  9. Digifant engine management system - Wikipedia

    en.wikipedia.org/wiki/Digifant_Engine_Management...

    A Digifant II DF-1 Engine Control Unit used in '91 Volkswagen Golf Cabriolet with 2E engine. Digifant is an Engine Management System operated by an Engine Control Unit that actuates outputs, such as fuel injection and ignition systems, using information derived from sensor inputs, such as engine speed, exhaust oxygen and intake air flow. [1]