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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.).
Does a check-engine light really mean something is wrong with your engine? An OBD2 scanner can tell you. What you should do if your idiot light comes on.
A group of tell-tales showing lights for "brake fluid", "stop lamp" and "check engine" Graphical tell-tales. A tell-tale, sometimes called an idiot light [1] or warning light, is an indicator of malfunction or operation of a system, indicated by a binary (on/off) illuminated light, symbol or text legend.
Each manufacturer used their own Diagnostic Link Connector (DLC), DLC location, DTC definitions, and procedure to read the DTC's from the vehicle. DTC's from OBD-I cars are often read through the blinking patterns of the 'Check Engine Light' (CEL) or 'Service Engine Soon' (SES) light.
The CB postcode area, also known as the Cambridge postcode area, [2] is a group of sixteen postcode districts in the east of England, within five post towns.These cover much of south and east Cambridgeshire (including Cambridge and Ely), plus parts of west Suffolk (including Newmarket and Haverhill) and north-west Essex (including Saffron Walden), and a very small part of Norfolk.
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.
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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