Posted on Jul 13, 2008

Check Engine Light

What do codes PO171 and PO174 mean?

6 more comments
Anonymous Jul 15, 2008

CHECK ENGINE LIGHT IS ON I NEED TO KNOW WHAT THESE CODES MEAN PO171 PO174
Anonymous Jul 24, 2008

I OWN 1998 FORD EXPEDITION. THE SER ENG LIGHT CAME ON FEW MONTHS AGO .THE MOTOR ONLY HAD 75000 MILES AT THAT TIME.THE SHOP TRIED EVERY THING IT JUST DOES NOT WANT TO GO AWAY.
Anonymous Oct 10, 2008

i have my engine light on and off for a year i dont know what to do anymore.
Anonymous May 12, 2009

PO171 AND PO174 CODES ON A 99 EXPLORER PO171 AND PO174 CODES ON A 99 EXPLORER
Anonymous Mar 13, 2014

2000 Silverado 5.3L codes po171, po174. what could be the problem?
Anonymous Mar 17, 2014

CODES= PO171 & PO174 CODES= PO171 & PO174
Anonymous Mar 29, 2014

any info on what those codes are. I'm waiting for approval to transfer ownership
Anonymous Mar 30, 2014

engine light on. po171, po420. Totyta corolla 2003. What is it and how much does it cost. My e-mail address is [email protected]. another code id 420, os censor and 02 can you tell e what all this means?

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Anonymous

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Posted on Sep 11, 2008

Anonymous

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I had the exact same codes on my 2000 Navigator with a 5.4L eng just today. It was a vacuum on the top of the motor. The hose had deteriorated and caused an associated hissing sound and rough idle. Used a little duct tape, ops check good, no return faults.

Anonymous

My steering column is no good

Anonymous

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Posted on Jul 21, 2008

Anonymous

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Joined: Jul 21, 2008

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