2019 f150 check engine light

2019 f150 check engine light DEFAULT
I have a 2006 ford f150 4x4 with an automatic transmission. On my way to town tonight, it ran fine for the first 8 miles or so, then, as soon as I got to the first stop light, I noticed some serious vibration while idling. I went through the light and pulled into a parking lot where I could assess the situation better. It was idling at approx 500rpm, and seeming to be running on several of the 8 cylinders. My "check engine" light began flashing as well. I revved up the engine to see if it would clear up, and it seemed to, so I continued driving, as I only had another mile or two to go. Power was 80% gone, struggling to accelerate, with a crazy vibration throughout the pickup. I also noticed a smell in the cab that smelled like a cars' exhaust in the cold morning ( like it's burning rich or something ), or something sweet like. Before I made it to my destination, I stopped again to try and give it a break, crutching my way. I let is sit for 5 minutes, then attempted to start it. It took a lot of cranks to fire up (10 seconds ), but it did. I got to my destination and shut it off. Its dark, and Im not a mechanic, so any suggestions? I'm what you'd call "concerned". Thank You!



Tuesday, December 15th, 2020 AT 3:26 PM (Merged)

Sours: https://www.2carpros.com/questions/2019-f-150-xlt

A flashing check engine light is your Ford F150’s way of saying “I have a serious problem, don’t ignore me”. Most of the time, that serious problem is a misfire.  This flashing light should not be ignored.  When your engine is misfiring, it is dumping raw fuel into the exhaust.  This raw fuel can detonate, which causes damage to the catalytic converter and the exhaust system itself. 

There can be other situations that can cause the check engine light to blink as well.  It’s flashing to let you know that if you keep driving the vehicle, you are going to ruin the catalytic converter and/or damage the engine in a meaningful way.

Flashing Check Engine Light Ford F150


Blinking Check Engine Light Diagnosis:  Ford F150

There will always be trouble codes associated with the check engine light blinking.  These trouble codes will be able to tell you where to start hunting down the problem.  Here are the most common issues that end up causing the check engine light to flash.  But, follow the OBDII codes.   A code scanner is cheap.  Use it to find out exactly why your vehicles computer decided to flash this light.


F150 Check Engine Light Flashing Due to Ignition Issues

The ignition system is the most common reason that the check engine light will flash.  The ignition system consists of spark plugs, plug wires, and the ignition coil packs (older vehicles have a distributer that has the same function as coil packs).  These parts work in concert to ignite the fuel in the combustion chamber at just the right time.

  • P0300:  Random Multiple Misfire–  This is one of the most common codes that is thrown when the engine is misfiring.  It means that the engine has a misfire, but the computer can’t detect which cylinder that it’s coming from.  This code is often thrown when there is a fuel issue, or a timing issue, and not just bad ignition components.  That is unless all the cylinders share a common coil (distributor ignition). 
  • P0301-P0312:  Cylinder Specific Misfire-  These trouble codes correspond with a specific cylinder misfiring (cylinder number corresponds with its place in the firing order).  Although it’s a bad sign when the service engine soon light flashes, when one of these codes comes up with it (and nothing else), it’s almost always one spark plug or ignition coil.  There can be other reasons this code is thrown, you can see more by clicking on the P0301 link above.

There are other misfire related codes as well, but those are the most common ones.

Ford F150 Blinking Check Engine Light Diagnosis

Fuel System Issues 

Keeping in mind that any engine needs air, fuel, and spark for ignition, your Ford F150’s fuel system can often cause the engine to misfire.  It can run too lean or rich.  Alternatively, there may not be enough fuel for proper combustion, or the fuel isn’t atomizing properly. 

  • Fuel Mixture:  If the engine is running rich or lean, the engine will misfire and throw the fuel mixture related codes, such as P0171, P0172, etc..
  • Injector Issues:  A bad fuel injector(s) can cause a misfire.  If the fuel can’t atomize properly, the engine will misfire.  Here’s a good article on how to diagnose whether your fuel injectors are bad from procarmechanics.


Other Issues:  Flashing Check Engine Light- Ford F150

While a majority of the time, the flashing check engine light is going to be caused by a misfire related to your F150’s ignition system or fuel system (as stated above), there are other issues that can cause it. 

  1. Your timing chain could have jumped. 
  2. If you have VVT, it may be having issues. 
  3. EGR- The EGR system recycles burnt exhaust gasses back into the combustion chamber.
  4. Crank/Cam Sensor-  When the cam or crank sensors are not being read by the ECM/PCM, it’s impossible to get the ignition timing right.  If you F150 does start at all, it’ll run rough.
  5. It could be a more serious mechanical issue, such as as bent valve, bad lifter, etc….



We recommend that you don’t drive your vehicle if at all possible until you diagnose and fix your F150’s flashing check engine light.  Just pretend that it’s letting you know that it’s going to cost you way more money to fix the problem if you keep driving it.  If there is anything that you would like to add, please feel free to leave a comment below.  Good luck!


Categories Ford F150Sours: https://www.700r4transmissionhq.com/ford-f150-flashing-check-engine-light/
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Ford dashboard warning lights are designed to alert you to any issues or malfunctions with a variety of vehicle parts and systems. For instance, when your Ford check engine light comes on, it can mean a few different things.

Is your gas cap loose or broken?

The first thing you should check when your check engine light comes on is your gas cap. If the seal is broken due to a loose or damaged gas cap, the vapor could be leaking into the fuel-tank system, which causes the check engine light to turn on.

Does your engine need oil?

If your gas cap is working properly, the next thing you should check is your engine oil level. A low oil level may cause your check engine light to turn on because driving with a low oil level can cause engine damage. Refer to your vehicle owner’s manual to find out how to check the engine oil.

You may also like: What’s included with a Ford multi-point vehicle inspection?

service engine soon light

Is it something more serious?

If the gas cap and engine oil level are fine, the check engine light could mean a more serious problem, such as:

  • Damaged spark plugs, wires, or coils
  • Issues with the thermostat
  • Malfunctioning catalytic converter
  • Faulty mass airflow sensor
  • Malfunctioning oxygen sensor
  • Faulty exhaust gas recirculation valve

You should have your vehicle’s computer scanned as soon as possible. A Ford service professional can read the code causing your check engine light to turn on and pinpoint the problem. It’s always best to do this quickly to avoid erasing the code, which makes it much more difficult to figure out the issue.

Is your check engine light blinking?

If your check engine light is flashing rather than staying on, the engine has either misfired or some of its cylinders aren’t working correctly. This can be very dangerous and may even cause damage to the catalytic converter, which is very expensive to fix. In this case, have your vehicle serviced immediately.

Do you have additional questions or concerns about your Ford check engine light? If so, feel free to get in touch with our service professionals at Sherwood Ford. We look forward to assisting you and helping you get your vehicle back to its proper working condition.

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Sours: https://www.sherwoodford.ca/blog/what-does-your-ford-check-engine-light-mean/
Reset Check Engine Oil Soon light on F150 Ford Truck 2018

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