Typical codes stored in the ecu when the maf fails are p0171 and p0174. Often referred to as the maf sensor the mass airflow sensor can fail triggering ford check engine light to come on.

Engine Light Is On 2012 2018 Ford Focus What To Do 2012 Ford Focus Se 2 0l 4 Cyl Sedan

To reset the check engine light on a 2012 ford focus you should take the following steps.

2012 ford focus check engine light codes. Rotten egg or sulfur smell. The understand why a check engine light on your ford focus has come on you need to refer to the diagnostic trouble codes which are stored in your car s computer. In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light.

Posted by marcia leonon dec 18 2018. Open the panel covering the input jack and plug in the scanner. For example if the cause of your check engine light coming on was a loose gas cap if it s tightened the light will turn itself off.

P1169 fuel rail sensor in range high failure. Check engine light is on. P1170 eso engine shut off solenoid fault.

I have a check engine light on my ford focus 2012 coupled with error codes p2831 and p2832 as well as p285e and p287b. If your ford maf sensor is defective you will notice engine hesitation during acceleration and a dramatic fuel economy decrease. Lack of power from the engine.

The 2012 ford focus has 6 problems reported for check engine light on. For example if the cause of your check engine light coming on was a loose gas cap if it s tightened the light will turn itself off. Locate the diagnostic input jack.

Answered on april 9 2020. The check engine light on your 2012 ford focus will usually shut itself off if the issue or code that caused it to turn on is fixed. Turn on the car s engine.

You can retrieve the codes by going to stores like autozone who will scan your car for free in the hope that you will buy your replacement parts from. A check engine light can indicate a broad spectrum of problems with your 2012 ford focus. Average repair cost is 120 at 47 200 miles.

Code p0420 indicates that the catalytic converter is not functioning efficiently therefore increasing the output of harmful pollutants by your ford. P1158 lack of downstream heated oxygen sensor switch sensor indicates rich bank 2 read our article on oxygen sensor codes for help with this ford check engine light code. Turn on the scanner if it does not power up automatically.

Observe the scanner s screen for the car s trouble codes. The check engine light on your 2012 ford focus will usually shut itself off if the issue or code that caused it to turn on is fixed. P1168 fuel rail sensor in range low failure.