the engine light stays on.

60

Asked by Dec 25, 2012 at 01:53 PM about the 2004 Land Rover Discovery HSE

Question type: Maintenance & Repair

Code points to O2 sensor.  Will this fix the issue.  I originally thought it was the quality of the gas being used.

4 Answers

107,925

O2 sensors get "lazy" when they get older and MPG's decrease. They usually are good for 80,000-100,000 miles. Replace it to reset the code and increase fuel efficiency.

3 people found this helpful.
1,235

Your Land Rover won't pass the smog test with a bad 02 sensor. Replacing the sensor should fix the check engine light problem but no guarantees. Have the hoses from the 02 sensor checked for cracks or holes.

1 people found this helpful.
107,925

Hoses on a O2 sensor? Smog test?

3 people found this helpful.
1,235

02 sensors are part of the smog system on every car. When the sensor goes bad or a hose goes bad, the car won't pass smog. Quit often the Check Engine Light will go on. The Check Engine light is a "catch all" for many problems.

5 people found this helpful.

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