This code is almost always the result of the catalytic convector being inefficient- and needs to be replaced. Looking at live engine data is needed to be be certain. Warranty of these is up to I believe 80,000 miles, may even be up to 100,000.

Most common cause for this is the passlock ignition cylinder is faulty. This is were you you out the key in. It may need to be replaced, then then theft system will need to be relearned. … Read more