Q: Service Engine Soon light is on in 2003 Chevrolet Discovery

asked by on February 04, 2016

The Service Engine Soon light is on in my Land Rover. I got three codes: P0327, P0134, P0441.

Code P0327 stands for knock sensor bank 1. Some of the common causes for this code are: a problem at connector C627 or C636, a problem with the power train control model (PCM) or a problem with the knock sensor itself. Code P0134 stands for lambda upstream catalyst bank 1. Some of the common cause for this code include: a problem at connector C635 or C644, a problem with the PCM, or a problem with the oxygen sensor. Code P0441 stands for evaporative system/ incorrect purge flow. The most common cause for this code is a faulty EVAP purge valve. These codes could be related or they may be separate issues. A trained mechanic, such as one from YourMechanic, can inspect your vehicle and determine the exact causes of your Service Engine Soon Light.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

brake are making a metal loud noise when I brake.

Hello. The price to replace all 4 rotors, calipers, and brake pads is very close to the price quoted when I used the estimating guide that I use for repairs. The calipers are listed at $246 each, rotors are about...

Car has little vibration. I wonder that is problem cause of power steering wheel fluid or other reason.

Hello. If you have a vibration in the steering, it more than likely has nothing to do with the power steering fluid. The pump would make noise if it needed the fluid also. If it vibrates when hitting the brakes,...

Transmission not shifting sometimes.

If your transmission is not shifting properly it is likely due to internal damage inside the transmission or a little fluid level. I would recommend having a certified Transmission expert inspect your transmission to determine why it will not shift....

Related articles

The Best Used Cars to Buy If You're Towing a Boat
If If you’re towing a boat, the vehicle that you buy is largely going to depend on the size and weight of your boat plus trailer. Most cars, realistically, aren’t cut out for the job. We recommend a pickup truck...
The Best Used Cars to Buy If You Love Camping
Do Do you love camping, getting back to nature and enjoying life in the great outdoors? If you do, then you know that getting there can be half the fun, and it’s even better if you have a great ride....
The Best Used Cars to Buy If You Have a Tiny Parking Space
In In many cities parking spaces come at a premium, so you only want to purchase one small space. This small space will end up dictating what vehicle you purchase, so we’ve rounded up some great candidates. Must-haves Arm yourself...