Intermitant EFI Warning Mk1 2000

[Curdster]

I have an intermitant EFI Warninc coming up on the LCD. There is usualy a clicking which sounds liek its coming from a relay in the fuse box and then the message is displayed. It also seeme to be linked to the fan heater as some times when I put the heater fan on it sounds like it is stuggling to start up, almost coughing before it hits full speed.
Any ideas?

[blueg33]

What error code comes up?

[Konrod]

Not sure if the heater is a red -herring. When I had this it made a beep at the same time as the fualt came up (is thsi your click??) - cause was faulty lambda sensor whihc makes sense given the message. Swapped it and all OK.

J

[Curdster]

The click is in addition to the beep and it does sound like a relay click.There is no code the screen just says EFI Warning only. I think the heater is a red herring but is it too coincidental?

[dlewis]

Ian

Self diagnosis without the software on a laptop is nigh impossible but certainly needlessly expensive.

I had this and it would not even clear.

Clearing all the faults after browsing the reports reset everything and it has not come back.

Could it be after washing it or rain?

The help manual gives all the possible reasons including lambda sensors, air leaks etc.

I have just swapped over the lamda sensors (as I am monitoring adaptive readings)as they are a bit expensive to rule them out.

Dave

[Curdster]

Ok so could it be the battery? Decent run on Sunday. Re started after 10 mins, very slow to crank and now constant EFI Warning on screen and the speedo illuminaton now flashes/flickers.

[dlewis]

Ian

As you are in Surrey you can come and hook it up on my laptop.

The battery voltage is logged as well as any faults causing the warning.

Dave