Twice so far, I've gotten a check engine light light up on my dash, both times, it was something along the line of Catalyst Threshold Below Efficiency: Bank 1, both times I was able to clear the code and it has been about 2wks before it came back on.
First, considering, I only have 1 cat, and 2 02 sensors, one in front of the cat and one behind, what is/does 'Bank 1' refer to?
Second, was that enough info to help me determine whether or not my 02 sensor or cat needs replacing? If so, which one? (I want/will do both at some point, though)
First, considering, I only have 1 cat, and 2 02 sensors, one in front of the cat and one behind, what is/does 'Bank 1' refer to?
Second, was that enough info to help me determine whether or not my 02 sensor or cat needs replacing? If so, which one? (I want/will do both at some point, though)
