the engine light stays on.

50

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

92,215

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.

2 out of 2 people think this is helpful.
1,035

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 out of 1 people think this is helpful.
92,215

Hoses on a O2 sensor? Smog test?

2 out of 2 people think this is helpful.
1,035

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 out of 5 people think this is helpful.

Your Answer

Add photo

Related Questions

Discovery

Looking for a Used Discovery in your area?

CarGurus has 149 nationwide Discovery listings and the tools to find you a great deal.

ZIP:

Search Land Rover Discovery Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Land Rover Discovery Experts

#1 Simon Briggs
Simon Briggs
Reputation 380
#2 chassy
chassy
Reputation 350
#3 Matt Mankinen
Matt Mankinen
Reputation 310
View All

Related Models For Sale

Used Land Rover Range Rover
91 Great Deals out of 4,789 listings starting at $5,000
Used Land Rover LR3
18 Great Deals out of 446 listings starting at $4,977
Used Land Rover Defender
82 listings starting at $54,988
Used Toyota 4Runner
380 Great Deals out of 20,972 listings starting at $2,495
Used Toyota Land Cruiser
17 Great Deals out of 1,195 listings starting at $4,095
Used Jeep Grand Cherokee
920 Great Deals out of 66,786 listings starting at $1,500
Used Jeep Wrangler
527 Great Deals out of 18,473 listings starting at $2,500
Used BMW X5
510 Great Deals out of 15,565 listings starting at $2,500