- Scanned computer system found 3 codes, po442 evaporative system small leak. PO420- AND PO430 catalytic converters. 02 sensor operation is normal. Tfhe lower down stream cats are not monitoring. Secondary post cat, 02 readings are way to fast switching indicating failed primary casts. Voltage should be switching slow due to compensated cat. operating when cat is not working voltage switching fast to accommodate for rich and lean fuel distribution. Recommend to go to muffler shop for welding replacement or complete assembly pipes.
BRIAN C. gave our service a 5 star review on 12/28/2020