My brother's 2008 Focus 1.8TDCI. Charging fault, low alternator output measured across battery terminals and from the main output terminal on top of alternator. he had to call AA out as battery was flat 20 miles from home. They said alternator bad and my voltmeter tests seem to confirm that. So my brother bought 2nd hand alternator on eBay.
Focus Mk2 engine systems fault no codes. 2006 1.8 TDCI Ford Focus MkII NOT the DPF model New fuel filter just put in Engine systems fault appears and I have hardly any power. . 430 274 93 45 114 496 381 342