Since 1997 the check engine light has been on.

I've replaced oxygen sensors, catalytic converter, etc.

The latest problem was the Mass Air flow sensor. I have found out that
the Land Rover OEM part is $1600, but the same thing is available plenty of places online for a little over $100. Is there a difference?

It still stays on, and the only way to get it to go off is to disconnect it.
What would cause this--it's been this way since it was new. What would fix it? It has 100,000+ miles on it.

L J Shaw.

 

1. What are the codes stored by the computer to turn on the engine light?

2. I bought a spare MAF from junkyard for $30. You can clean them, but you need to do it with the unit cold. There is a small wire inside that is heated to over 350F, you can't spray that with cold aerosol MAF cleaner (use stuff made for MAFs).

3. Without codes, any ideas would be a SWAG (scientific wild *ss guess).

4. Most auto parts stores will read codes for free. Write down the number, not the words, and post back. There is also a link to the GEMs ECU manual in my signature, which has the codes and what generates them listed.