What does code p0303 mean in a f-150?

Answer 1

Your # 3 engine cylinder has a misfire

On a Ford F-150 ( V8 engine )

firewall

4 - 8

3 - 7

2 - 6

1 - 5

front of Ford F-150

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if it has a (V6 engine )

firewall

3 - 6

2 - 5

1 - 4

front of Ford F-150