had my ford focus 1.8 tdci 4 month and its my first ford car i have bought and it has up with engine systems failure with a red LED indicator next to the message display unit on the dascome h on the right hand side and gone in to limp mode, had a fault reader on it but didnt pick anything up do to been a faut reader and nothing special. I am facing problem with my Ford Focus 05 number plate from yesterday. Yesterday evening it shows suddenly "Engine System Fault", then "Acceleration Reduced". I drive home like 5 miles without any problem but that message was showing.. Then this morning haven't seen any message. But, in the evening coming back home just now had more problem Name: Daniel. Ford Model: Focus. Ford Year: 2007. UK/Ireland Location: Lancashire. Posted May 12, 2018. I have a focus Ghia 1.6 TDCi with engine system fault showing. Put a mates fault code reader on and it said it was vehicle speed sensor A. Think that means intermittent. Purchased what I thought was the correct sensor. ANtaHmf.