Code P0172
Safety Car
Joined: Jan 2007
Posts: 4,332
Likes: 0
From: Kuwait
Mine is P0108 "Manifold Absolute
High Voltage" I already know that's my MAP sensor, I changed it twice
in 9 days.. is that code causing hp/power issues to me or not? am I
loosing power? what should I do to solve the problem once and for all?
I cleared it like 3 times with my Diablo Predator but it still there!
High Voltage" I already know that's my MAP sensor, I changed it twice
in 9 days.. is that code causing hp/power issues to me or not? am I
loosing power? what should I do to solve the problem once and for all?
I cleared it like 3 times with my Diablo Predator but it still there!
Melting Slicks
Joined: Nov 2004
Posts: 3,064
Likes: 6
From: Pinellas Park Florida
Mine is P0108 "Manifold Absolute
High Voltage" I already know that's my MAP sensor, I changed it twice
in 9 days.. is that code causing hp/power issues to me or not? am I
loosing power? what should I do to solve the problem once and for all?
I cleared it like 3 times with my Diablo Predator but it still there!
High Voltage" I already know that's my MAP sensor, I changed it twice
in 9 days.. is that code causing hp/power issues to me or not? am I
loosing power? what should I do to solve the problem once and for all?
I cleared it like 3 times with my Diablo Predator but it still there!
Thread Starter
Race Director
Joined: Jan 2006
Posts: 18,396
Likes: 169
Wouldn't a vac leak result in a lean condition, not rich? For a while I was blowing intake manifold gaskets when under boost, and it was throwing a lean code on cylinder bank one. Discovered a gasket failure fron a manifold issue. Replaced the manifold, and have not had that code since. But, this rich code has me puzzled.
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Melting Slicks
Joined: Nov 2004
Posts: 3,064
Likes: 6
From: Pinellas Park Florida
I struggle with this code for almost a year with my 3.8 1997 Gran Prix-the leak was a very small leak by the fuel regulator. By the way, if the car thinks it is running lean because of a vacuum leak, it responses by increasing the fuel load, hence the error is seen at the O2 Sensor. Good luck!
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
RE. P0172, the '05 Service Manual says;
Fuel contamination, such as water or alcohol, will affect fuel trim.
A malfunctioning MAF sensor can cause a rich condition and set this DTC.
Review the Failure Records with a scan tool. If an intermittent condition is suspected refer to page 8-892.
Fuel contamination, such as water or alcohol, will affect fuel trim.
A malfunctioning MAF sensor can cause a rich condition and set this DTC.
Review the Failure Records with a scan tool. If an intermittent condition is suspected refer to page 8-892.
Last edited by haljensen; Aug 14, 2007 at 06:50 PM.
