Hi, thanks for your question. You will need to have the computer system scanned to see what code is stored in the computer and have it diagnosed. The code may be something from the previous repairs or something new. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.
How to Identify and Fix Common car Problems ?
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The Light Stays On
If you`re experiencing this, don`t panic. You may think that there is still a problem with the car after the repair, but it`s because the light needs time to reset. The car`s internal computer only resets after a set period where it checks all of its sensors once more.
The emissions/exhaust system is the most likely culprit for many check engine lights being illuminated. There could be an exhaust leak or a problem with the catalytic converter. The mass airflow sensor (MAF) is another sensor that is easily tripped or can fail.
But, there are other possible causes of intermittent illumination of the Check Engine Light such as failures in engine sensors, intermittent misfires, and faults with sticky or stuck valves such as in the EGR (exhaust gas recirculation) system or the EVAP system.
There are many reasons you suddenly see a check engine light after getting gas. It could be a loose fuel cap, a gasket gone bad on said fuel cap, or a damaged vacuum hose, among others.
To make sure the check engine light does not reappear, it`s recommended that you drive your car 30 to 100 miles. This enables the vehicle`s “Drive Cycle” to reset, as the various sensors need time to recalibrate.
Loose Gas Cap
This is the first item you should check. The gas cap seals the fuel system ensuring proper pressure is maintained in the gas tank.
Your Car Needs an Oil Change
It can activate because the oil is too dirty or when there`s not enough flowing throughout the engine. To determine if this is the cause of an illuminated check engine light, check the condition of the oil using your dipstick.
Will your check engine light turn off by itself? In most cases, successfully repairing the issue that caused your light to come on will cause the check engine light to turn off automatically—but only after 10 to 20 “cycles”.
Can you drive a car with the engine light on? It`s okay to drive for a few miles, but be sure to schedule an inspection of the engine as soon as possible. If the check engine light comes on while you`re driving, don`t panic! Pay attention and see if the car is driving any differently than normal.
How long can you drive with the check engine light on? Once you see the check engine light, it is safe to drive with the light on for 50 to 100 miles. This is because if the issue is with the sensors, then this will buy some time for it to reset, turning the check engine light off.
A flashing orange light means that there is a problem that could affect how the car drives or handles, such as an engine misfire. You might be able to feel your car shake, or the engine could suddenly sound different. If this light comes on, you should take your car to be inspected immediately.
The check engine light should go off after you drive for several minutes if the light was caused by a loose gas cap. Pay attention to the dashboard after the check engine light experience. If you find that the light keeps coming on, and goes off again once you tighten the gas cap, then your gas cap is too loose.
A dirty air filter can cause your vehicle to throw a Check Engine code. During this instance, the Check Engine Light of your vehicle will turn on. The light turns on because your vehicle is sensing that its engine isn`t receiving enough air.
3) Disconnect the Battery then Reconnect
Ideally, this will clear the data, turning off the light. You can then reconnect the battery and turn the ignition on. After about a minute, the check engine light code should be off.
With the OBDII Scan Tool MS309 from OxGord, you can easily read diagnostic codes, clear trouble cods (DTC`s), and turn off the check engine light (MIL) on US based vehicles from 1996. It will also retrieve the vehicle identification number (VIN) on 2002 and newer vehicles that support Mode 9.
The check engine light illuminates when your vehicle`s computer believes there is a problem that could affect — or is affecting — your car`s emissions control system. When the light comes on, one or more diagnostic trouble codes are stored in the car`s computer. These codes will stay there even if the light goes out.
Press the odometer`s Trip and Reset buttons while turning the ignition key ON. After turning the key ON, release the odometer Reset and Trip buttons to check if the Diagnostic Trouble Code or DTC appears on the odometer display.
Oil filter that has become saturated with dirt not only holds the motor oil but also deteriorates its lubrication properties causing increased friction among the moving parts which is another reason why the engine might heat up during normal drives. It may cause the check engine light to come on.
If you want to perform a full reset, wait at least 15 minutes before reconnecting the battery to ensure all residual power has been drained. A full reset reverts your ECU to its factory settings and likely causes it to forget its learned ideal shift points and air-fuel mixing ratios.
However, failing to clear a code after a repair could leave you second-guessing the issue or doubling your work to recheck the codes. That`s why you should always make clearing codes an essential part of your repair process.