Check engine light on
#1
Check engine light on
My 09 H3T check engine light came on, went to autozone for an OBD check, this code came out.
P0420 OBD-II Trouble Code: Catalyst System Efficiency Below Threshold (Bank 1)
Anybody had similar issues and what was the fix?
Thanks!
P0420 OBD-II Trouble Code: Catalyst System Efficiency Below Threshold (Bank 1)
Anybody had similar issues and what was the fix?
Thanks!
#5
My guess at that mileage, which is not a long shot, is it is time for a new Cat. Like Taint said, could also be the rear O2 sensor, or both Cat and O2?
Any reputable exhaust repair facility can put it on a scanner and run it to full operating temp and watch what happens to double check what it needs.
IMHO and experience, Cats go about 140K miles +/- before they toast.
Any reputable exhaust repair facility can put it on a scanner and run it to full operating temp and watch what happens to double check what it needs.
IMHO and experience, Cats go about 140K miles +/- before they toast.
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