Check Eng Light reset

[rover01]

Can someone tell me how to turn off the check engine light?
The diag box reads code 68. I tried to clear the code but it wont go away. Spedo works. 1990 RRC

[tiger]

I suppose if you are reading codes, this is pretty basic to you, but...
Disconnect the battery for a few minutes to reset the computer. If the light comes back on, you have a bad sensor.

[CJH]

From Jon Robison's Land Rover page:

http://www.robisonservice.com/servic...er_trouble.asp

Here is how you clear codes once you've read them and addressed the faults:

1. Switch ignition on.
2. Disconnect serial link mating plug, wait 5 seconds, then reconnect.
3. Switch ignition off and wait for main relay (located under the passenger seat in Range Rovers) to drop out.
4. Switch ignition on. The display should now be reset. If there are other faults, the next one will be displayed. Otherwise the display will be black.

If there is more than one fault repeat these steps to clear each fault until the display is blank. If you clear a code without performing a repair it (and the EFI light) may or may not return. Some codes are set by intermittent conditions that do not occur often. Other codes signal serious faults that are detected immediately upon startup.