I have a scanner, the three codes are p0125, p0420 and p1130. The rear sensor o2 is new, is an OEM denso. The front o2 sensor is 2 years old, is a bosch. The cat is about 2 years old and is after market.
I have recently cleaned the MAF and air filter and changed spark plugs. No other codes ever show except infrequently a lean mixture code.
After being cleared, check engine light stays off 2-4 days and then comes back on.
Any help would be appreciated.
have the same problem?
Monday, November 2nd, 2015 AT 9:44 AM