ODB II Code 174 only | Ford Explorer - Ford Ranger Forums - Serious Explorations

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ODB II Code 174 only

exp97

New Member
Joined
May 20, 2005
Messages
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City, State
Baltimore, MD
Year, Model & Trim Level
97 XLT
On my 1997 Explorer XLT, the only code I am able to read is:
0174 System Too Lean (Bank 2). I've seen many postings that include 0174 but they usually seem to state both 0171 and 0174 System Too Lean for Banks 1 and 2.
With only one bank showing this error is it a safe bet that the issue is with the oxygen sensor related to bank 2?
If this is an incorrect assumption, then I would appreciate hearing what other possible causes would only produce this one code, and in what order it makes sense for a do-it-yourselfer to tackle them based on cost and also ease of task. Thanks for any advice anyone can offer!!
 
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cjones101812

Well-Known Member
Joined
September 12, 2007
Messages
370
Reaction score
1
City, State
Avondale, AZ
Year, Model & Trim Level
06 Explorer EB
bank 2 is driver's side.

with the scanner connected watch the O2 PID. does the voltage change while snapping the throttle??

check for vacuum leaks, exhaust leaks on that side of engine. check fuel injector pulse and flow in that side of engine.
 
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