Check engine light came on?

KHLOW2008

MECHANIC
41,814 POSTS

Programmming of key does not require any scan tools.

Is your fob the one shown in diagram and is the procedure you have tried the one in chart?

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Wednesday, January 6th, 2021 AT 2:12 PM (Merged)

JOSEPHLANG

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2 POSTS

No where in my questiom did I ask about fobs im talking about transpoonder key programming

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Wednesday, January 6th, 2021 AT 2:12 PM (Merged)

KHLOW2008

MECHANIC
41,814 POSTS

Sorry, my bad for misinterpreting your question.

New Generation Star (NGS) tester and Ford Service Function (FSF) card must be used if the two programmed key method does not work.

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Wednesday, January 6th, 2021 AT 2:12 PM (Merged)

SCATR001

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1 POST
2000 FORD EXPLORER
6 CYL
2WD
AUTOMATIC
170,000 MILES

My father in-law had a new radiator installed, when he brough it home the check engine light came on. I pluged in my code reader & the codes are p0171 & p0174 ( bank 1 & 2 too lean). I tried to find a vacuum leak but was able to find it. Is there something else I should be looking for?

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Wednesday, January 6th, 2021 AT 2:12 PM (Merged)

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

The lean code usually is exactly what you mentioned, a vacuum issue. I would continue checking that. Also, make sure the O2 sensors are connected and the coolant temp sensors are connected.

Let me know what you find.