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15/03/2021 10:08 am
Topic starter
Hey Scotty, my 98 F150 with a 4.2 V6 has 2 trouble codes, one being p0174, and p1506, what should I look for?
So maybe a vacuum leak then?
2 Answers
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15/03/2021 10:12 am
Hello, I know I am not Scotty, but I can still help you out
p0174- lean condition detected by the Engine Control Module (there is too much air, and not enough fuel, in the air-fuel ratio)
p1506- engine idle is out of factory specification. It is possible that the Idle Air Control may have carbon built up
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15/03/2021 10:25 am
Start here:
https://www.obd-codes.com/p0174
https://repairpal.com/obd-ii-code-p0174
For P1506 see below:
https://m.youtube.com/watch?v=Y7gEuz8Y-gw
Also, good troubleshooting here (applicable to V6 and V8’s):
https://troubleshootmyvehicle.com/ford/4.6L-5.4L/troubleshooting-p0171-and-p0174-page-1