0151B code 2017 SE Fusion

[Nicklg]

I see a couple of people posted on this but no one has had an answer. No one seems to know what a Crankcase Pressure Sensor is at any Auto Parts store, some  say it's the MAP sensor? So my question is what is the actual part number that you  replaced and where is it on a 1.5 liter 2017 Fusion SE.

 

Thank you

[bbf2530]

1 hour ago, Nicklg said:

I see a couple of people posted on this but no one has had an answer. No one seems to know what a Crankcase Pressure Sensor is at any Auto Parts store, some  say it's the MAP sensor? So my question is what is the actual part number that you  replaced and where is it on a 1.5 liter 2017 Fusion SE.

 

Thank you

 

Hi Nick. Welcome to the Ford Fusion Forum. If you do not get an answer from another member, you can call or stop by the Parts Department of your local Ford Dealer and they can give you the part number. I usually recommend stopping by, since you will get better service in person than over the phone.

 

Keep in mind that DTC codes do not say "Replace X" or "Replace Y". There are usually several possible causes for a particular fault code, so just replacing parts is not the correct way to address the code. There is usually a sort of "troubleshooting tree" that should be followed.

 

Also, the "Site Feedback and Help" section is for questions and issues with the website itself. Your thread will be moved to the 'Maintenance, Recalls and TSB (Technical Service Bulletins" section.

 

Good luck.

Edited November 17, 2020 by bbf2530

[drolds1]

Let's start with the correct code.  It's P051b. The crankcase pressure sensor is part of the  PCV system.  The reason that you can't find the part number for it is because it isn't sold separately.  You have to purchase the PCV hose which includes the sensor, as shown here.

 

As bbf2530 points out, codes only tell you where the problem is and a diagnosis has to be made using the troubleshooting he mentions.  It may be that the sensor is just doing its job and isn't defective at all.  Of course, it can be the sensor itself but you might replace it and not solve the problem.  These are possible causes:

 

 

Here's a post that dealt with your issue but the owner had a scan tool and digital multi-meter to diagnose the problem.  Unfortunately, the troubleshooting link was deleted. 

 

 

 

Edited November 19, 2020 by drolds1
to correct posted image