Originally Posted by
stussierra
Pardon my ignorance - what does 1+1, 1+2, 1+3 etc mean?
Are these codes relevant to a non-Cosworth DOHC EFI?
1+1 indicates flash, pause, flash
1+2 indicates flash, pause, flash. short pause, flash
1+3 indicates flash, pause, flash. short pause, flash. short pause, flash
etc.
The DOHC codes on the EEC IV are completely different and there are many more of them. The diagnostic socket is by the positive battery terminal. A Gunson Fault Code Reader is ideal for reading these codes and comes with the code list.