Technical Advice Needed
My SES light came on today. I took the 99 Discovery II to Autozone to have the codes read(free, saved me $$$ !!). It has 70,000 miles and I don't really know the service records. Five codes showed read in this order.
1. Cylinder 3 misfire
2. High voltage O2 sensor
3. Cylinder 5 misfire
4. Cylinder 7 misfire
5. Cylinder 3 misfire
After the codes were cleared I drove it home and the light did not return. My first instinct is to check the spark plugs and wires for wear.
The Autozone employee thought that the O2 sensor high voltage indicator was a faulty O2 sensor. The part ranged from $160-$140(did not buy or order).
Any advice from the more experienced would be greatly appreciated.
Duke
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