2011 petrol evoke 105,000 kms. Engine light stays on. Are there 2 sensors on the same error code for the cat converter? Have had 1 O2 sensor changed but light comes on after a few days. same when cleaner has been in petrol or direct into engine through air filter, I reset the system but light comes on in a few days. Been like this for nearly 2 years and engine performs as normal. Any Ideas? Thanks. , Russ