Error Codes P042E & P0405
FORD C-Max II (DXA/CB7, DXA/CEU)
8 
294 
21.10.23 Back to topics
engine system fault on FORD Focus Mk2 2.0 TDCi Diesel
FORD Focus II Hatchback (DA_, HCP, DP)
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@Afters Apr 09, 2021MemberHello everyone, I’d appreciate some advice. My Ford Focus 2.0 TDCi keeps cutting out and the “engine system fault” message has come up and there’s a red light that’s now constantly to the right of the display. I did a scan with an OBD2 code reader but just got the message “no codes stored” I tried to erase it but that didn’t change anything. I tried scanning a couple of times but it isn’t finding any codes. I did a dashing test as well and it didn’t show any codes either. Has anyone had the same problem of not being able to find an engine system fault on a Ford Focus? Any ideas what I can try next?
Reply 09.04.21 
14.04.21 -
@Hadown1995 Apr 14, 2021MemberYou need to take it to a dealer or specialist to have checked with Ford’s own diagnostic software since it’s presumably a problem with the engine rather than a sensor and an ODB2 scanner won’t be able to find everything.
Reply - @Selinglese Apr 14, 2021Member
Given the symptoms it’s quite likely it’s a problem with the fuel system. The most common issues here are a defective pump or debris in the tank clogging the injectors. These don’t show up as error codes so the best thing is to bring it to your Ford dealer and they should sort it out for you, possibly with hand priming.
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