My 2005 ford five hundred has these engine codes po171,po174, p2104,p2111, what do they mean?
Lean bank 1 and bank 2 , and throttle actuator system fault. Check reason for lean codes 1st, vacuum leak(s), air inlet boot and hoses, or low fuel pressure / clogged filter. Repair as needed then clear codes and recheck .
SOURCE: 2005 Ford Five Hundred 3.0L
You have one bad COP Igniton Coil
The coil is not grounding out in the PCM
A signal is coming back to the TPS Sensor
& you loose it's signal
The PCM then doesn't know throttle position %
and sets a 2104 & 2111 & you think that you have
a bad Throttle Body Motor (TACM)
A dealer will charge you $1000.00 & fix nothing
Buy one coil for $35 to $50.00 & install yourself
You may have to walk the new coil around a few times
& drive the car 30 miles each time, until you get the bad coil
Repair shops are not good with Fords & Dealers are useless
You should have other Misfire Codes & lots of them
Give them to me
SOURCE: p2104,,,,,,,,,p2111,,,,,,,,,p2135,what do these codes mean,2006
Follow this link, hope it helps. Good Luck.
http://www.fordf150.net/forums/viewtopic.php?t=49449
SOURCE: 2003 Ford Expedition check engine light on .Codes PO171 & PO174
This is a tough one could be mass air flow sensor ,oxyegen sensors,a fuel filter. a vacum leak, a pcv valve if i missed anything just google po 171 &174 look for fix ya this issue has been addressed many times first check the vacum lines includeing the line on the pcv valve for cracks or splits in the lines .I would do the fuel filter if it hasnt been changed in the last couple of years , if still a problem the MAF sensor if your happy with my advise please leave me with great feedback
SOURCE: 2003 Ford Expedition check engine codes PO171 & PO174
You should be replacing all upstream oxygen sensors,
the ones at the inlet or pipe before the converter,on all
your vehicles at 100,000 miles
Go to Rock Auto.Com & buy two & install yourself
NTK 22060 $26.79 ea
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