I recently took my 2006 ford expedition in for repair. Had the spark plugs replaced. I got it back, and now the engine light is coming on. The error codes are po420 and po430. The engine light has
Never come on until I got it out of the shop.
?The repair shop was a Ford service
department. What should I do?
take it back to the dealer ask what the hell is going on
John is right on. Those are O2 sensor codes, they probably forgot to hook up a wiring harness connector that they had to remove while accessing the plugs.
Thank you I am taking it back monday I Will let u know how it goes
You have the right answer from Tom, above.
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