sadler1989 Posted January 10, 2016 Share Posted January 10, 2016 hello Please can someone shed some light Trying to replace head unit on my fiesta, every time I run the car with a aftermarket head unit engine light comes on I can reset it as I brought a cheap device on eBay and with original it stays off Does anyone know how to stop it coming on I know there is some sort of sensor in it Thanks tony Quote Link to comment Share on other sites More sharing options...
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