Code 0108 map sensor

Tiny
JSSTRINGER
  • MEMBER
  • 2006 LINCOLN TOWN CAR
  • 111,245 MILES
Failed emissions with 0108 code.
Thursday, June 4th, 2020 AT 10:42 AM

6 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
I attached the testing for this code that you need to follow in order to determine what the issue is. Unfortunately you will need a scan tool capable of performing some of the testing. Let me know if you have questions as you work through this.

Unfortunately, I can't just tell you what part to replace. This could the MAP sensor but it could also be wiring or the PCM.

Let me know if you have questions about this but again, the only way to know for sure what part we need is to perform this diag.
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Thursday, June 4th, 2020 AT 3:08 PM
Tiny
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If it is the MAP sensor, where is the MAP sensor located on this vehicle?
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Thursday, June 4th, 2020 AT 4:49 PM
Tiny
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Thank you for the speedy response.
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Thursday, June 4th, 2020 AT 4:51 PM
Tiny
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So I just realized with that question that your vehicle does not have an actual MAP sensor. It uses a MAF or mass air flow sensor to determine how much air is coming into the engine and then it calculates the manifold pressure. Because of that, this code is most likely pointing to one of three things. First a vacuum leak. Next a MAF issue or EGR issue.

I would suggest running through this guide and test for a vacuum leak and go from there.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge
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+1
Friday, June 5th, 2020 AT 9:04 AM
Tiny
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Thank you so much, you are a professional at what you do.
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Friday, June 5th, 2020 AT 11:24 AM
Tiny
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Thank you for the kind words. Please let us know what happens with this or if you need more help. We are here whenever you need us. Thanks
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Friday, June 5th, 2020 AT 8:08 PM

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