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What does malfunction control mean?
A check engine light or malfunction indicator lamp (MIL), is a tell-tale that a computerized engine-management system uses to indicate a malfunction. This warning light can indicate almost anything from a loose gas cap to a serious knock in the engine.
Should MIL status be on or off?
MIL (Malfunction Indicator Lamp) status indicates if the vehicle com- puter is telling the MIL to illuminate when the engine is running. MIL ON indicates that the check Engine Light should be ON. MIL OFF indicates that the Malfunction Indicator Lamp should be OFF.
What can cause an EVAP code?
An EVAP trouble code could be caused by something as simple as a loose or worn gas cap, a leak in a hose, problems with a purge valve or even a rusty fuel filler pipe. When your Check Engine light comes on, bring your vehicle into Auto Select and let us check it out.
What is code P0446?
The evaporative emission control (EVAP) system prevents fuel vapors from escaping into the atmosphere. When P0446 is triggered, the ECM has detected a short in the circuitry to activate the vent control valve, or the EVAP system failed to maintain the proper pressure during the active EVAP leak test.
What does the p0650 code stand for?
The P0650 code is one of the trouble codes related to an issue with the check engine light or its circuit. What Does the P0650 Code Mean? Diagnostic trouble code (DTC) P0650 stands for “Malfunction Indicator Light (MIL) Control Circuit.”
What are the symptoms of a p0650 DTC?
Symptoms of a P0650 DTC may include: Malfunction indicator lamp NOT illuminating when it should (check engine light or service engine soon light) MIL being illuminated all the time
How does the p0650 Chevrolet malfunction indicator lamp control?
P0650 CHEVROLET Meaning A voltage is supplied directly to the malfunction indicator lamp (MIL). The Powertrain Control Module (PCM) controls the lamp by grounding the control circuit via an internal switch called a driver. The primary function of the driver is to supply the ground for the component being controlled.