The check engine light is part of your lorry’s onboard diagnostics (OBD) system. Computers have control and monitor vehicle performance, regulating such variables as engine speed (RPM), fuel mix, and ignition timing, and may even tell the automated transmission when to move.
Check Engine Light Understanding
When the electronic-control system discovers a problem it can not change, the computer system switches on a yellow warning indication and stores a problem code in it’s memory. These diagnostic trouble codes (DTC) assistance identify the possible source of the issue, such as a malfunctioning sensing unit or a misfiring engine and can be read with a scan tool or diagnostic computer system. Vehicle makers originally used the OBD system to assist technicians pinpoint and troubleshoot malfunctions. Exactly what the OBD system tries to find depends on the make, model and year of the car.
The initial systems varied commonly in their abilities and some did little bit more than check whether the various electronic sensors were connected and working. With the advent of the OBD II systems, required under federal laws managing automotive emissions, car manufacturers were required to install a more advanced system that, for all intents and purposes, acts like a built-in emissions keeping an eye on station. The check engine light is reserved only for issues that might have an effect on the vehicle emissions systems.
What does it mean?
If the check engine light brightens, it will either blink or remain constant, depending on the problem. Either way, you need to have the vehicle examined by a Qualified Service Professional as soon as possible.
If the light is stable. The problem is not an emergency, however you need to arrange a consultation as soon as possible.
A blinking light normally shows a severe engine misfire enabling unburned fuel to be discarded into the exhaust system. There it can rapidly raise the temperature level of the catalytic converter to a point where damage is likely, requiring a costly repair. If this happens, you must reduce power and have the car examined as soon as possible.
Today’s automobile computers frequently attempt to compensate when there’s a problem: so you may not discover wear and tear in efficiency, although your fuel mileage is suffering and your lorry may be giving off inappropriate levels of hydrocarbons and/or other pollutants.
If the check engine light comes on:
Look for a severe problem that requires immediate attention.
Check your dashboard determines and lights for indicators of low oil pressure or getting too hot. These conditions indicate you must pull over and turn off the engine as quickly as you can discover a safe location to do so.
Try tightening your gas cap
This often solves the issue. Bear in mind that it might take a number of journeys prior to the light resets. Some lorries have a separate indicator that warns of a loose gas cap prior to the condition sets off the check engine light.
Reduce speed and load
If the check engine light is blinking or you notice any major performance problems, such as a loss of power, minimize your speed and attempt to lower the load on the engine. For example, it would be a good idea to stop hauling a trailer. Have the car inspected as quickly as possible to prevent expensive damage.
Have the code read and the problem fixed
Take the vehicle to a professional. Some automobile parts stores will read and interpret the code for you. However, unless there is a simple option to the issue, you must have the vehicle identified by a certified service technician straight tell what’s incorrect, so you have to test to discover the genuine culprit. This is where the real meaning of codes enters play. The only thing a code actually shows is which system or circuit to test in order to isolate the actual problem.
Each mathematical code has a matching-numbered test procedure. Following that test will direct you to the problem. Each step of each test need to be performed in outright series. skipping actions or performing steps out of series might make the entire test worthless. Tests might likewise give you voltage, resistance, temperature level, or time specifications, which are exact worths. Close doesn’t count.
Don’t confuse the Check Engine light with the upkeep reminder or service interval light. These lights brighten when a regular service is due. They are usually triggered by mileage, quantity of fuel consumed, or some other kind of vehicle-use measurement.
Things to watch for
- The conditions of the battery and charging system are important to the appropriate operation of the electronic control system. Both must be consistently examined by determining cranking and engine running battery voltage
- Ensure the battery ranking satisfies a minimum of the minimum cranking amperage (CA or CCA) requirement for your automobile
- The fan/alternator or serpentine belt on your lorry is an important part of the charging system. Belts ought to be inspected for signs of wear and correct adjustment
- Loose or corroded cable ends may prevent your battery from keeping a complete state of charge
Last updated on September 16th, 2019