Hello, I'm new to the Jag world,just got new tires and some front end work done and was looking forward to a cruise this weekend. Today the check engine light came on so I caught my jag mechanic as he was getting off and he hooked up the equipment and its the O2 sensor ( second bank??), Is this common for older 2001 S-type,4.0 jags, I might of had a bad grade of premium gas(not a big name fueling station?. He is relocating his shop to a bigger place this weekend and will call me on Monday...Will I be shocked for the repair cost??
Thanks for listening..got a little wordy!

 

The oxygen sensor is not an uncommon issue on any make of vehicle. They can be pricey but I have had success with aftermarket sensors being a good option to the typically much more expensive OEM product. Stay away from the super cheap stuff however. If you have a lot of miles on the car and driveability problems or poor fuel economy I would consider doing all the O2 sensors and be done with it. If it is simply the CEL then just replacing the failed sensor is fine.

 

What was the actual code?

 

can't remember the exact code but something about co2 second bank not reading well.

 

It is always important to report the exact OBDII code(s). Much less guesswork required on our part to help you when you can provide the exact code(s). Always ask your tech, and write it down so there is no confusion when you log on here to report it....

 

Hi gjcprintmaster,

Welcome to the Jaguar Forums!

I have changed the title of your thread and your initial post to reflect the proper term, O2 Sensor. If I recall my high-school chemistry correctly, pure oxygen atoms tend to form pairs with other atoms in a process called covalent bonding, where a stable structure is achieved between the two atoms by sharing two pairs of electrons. These dual-atom molecules are commonly represented by the abbreviation O2.

CO2 represents carbon dioxide, and I don't believe your S-Type has a CO2 sensor.

+1 on the previous suggestions to ask your mechanic for the actual Diagnostic Trouble Codes (DTCs) and report them here.

O2 Sensor codes can sometimes be triggered randomly, or reflect problems elsewhere in the system, corrosion on electrical connectors or ground points, or low battery voltage.

I would suggest asking your mechanic for the code that was reported, then have him clear it and then drive the car and see if it reappears. If not, it may have been a random glitch due to low battery voltage, a lazy relay, releasing the ignition switch a little too slowly or quickly when starting, or some other random or infrequently-occuring event.

If your mechanic tests the O2 sensor and determines it is faulty, you can typically find a replacement made by the Original Equipment Manufacturer (OEM) available from third-party vendors at a price much lower than the Jaguar dealership. Your O2 sensors were probably made by Denso, or possibly Bosch. Both companies have parts-finder websites where you can enter your model information and find the correct manufactuer's part number. Google that number to shop for the best price on the part, then compare that price with the good independent Jaguar parts specialists like forum sponsors Coventry West, SNG Barratt and Jagbits, who all offer nice discounts to Jaguar Forums members, as well as Welsh Enterprises, and online Jaguar parts dealers jaguarmerriamparts.com and gaudinjaguarparts.com .

Cheers,

Don

 

Jagbits Jaguar Parts: Search