Quick Tip: Ford® Misfire Monitor Neutral Profile Correction

Often after a repair on a vehicle, you need to do some sort of a reset or relearn to make sure the computer understands that repairs have been made and it can adapt. 

On Fords, there's a test that's done that's called a misfire monitor neutral profile correction. 

So let's walk through how to do that on this focus. 

All right, so that's in the engine system. 

So we'll go into engine and functional tests, and that is a special function. 

And if we go down here, we have the misfire monitor neutral profile correction. 

So it says this procedure resets and learns A misfire monitor neutral profile correction. 

This procedure should be performed following either APCM replacement, internal engine repairs, or crank sensor or trigger replacement. 

So any of those things I do, any sort of internal repairs, I take it apart for any reason. 

I need to do this after the fact, so we need to make sure the engine is on and the engine is running. 

Let's click continue. 

Engine has to be at operating temperature, which it is, gear selector and Parker neutral air conditioning or defrost off. 

This will not allow you to continue until the engine is fully warm, so you need to make sure you meet those requirements. 

And the misfire monitor is not enabled unless a valid misfire profile correction has been learned. 

So it won't even do the misfire monitor for emissions if this isn't done. 

So we'll hit continue and then it's going to say, operate the accelerator pedal, increase RPM above 3500 when, then return to idle speed until the misfire monitor wheel profile down count reaches 0. 

So that's this PID right here. 

So it's it's now at 10, so it needs to get down to a zero. 

So if we can Rev that up once. 

OK, OK, one more time. 

OK. 

All right, there we go. 

And once it reaches 0, it automatically completes, says the test is complete and turn the ignition off. 

So we can just leave it running for now. 

So this is a test that needs to be done on any Ford after any mechanical repairs are made to the engine. 

So just so you're aware, that needs to be done in order to complete that misfire monitor.