P0161 on 2020 HONDA Accord

“I have been running on a clogged converter for a while before installing the pcd’s so could the excessive heat have ruined the sensor? Also I installed the o2 sensors the way I was supposed to with the defoulers already preset.”

“Carbon buildup If this was my car, the first thing to do is check compression on all cylinders and see where you are. Carefully examine the plug and coil carefully for carbon tracking.”

“Codes I was having were P0303 and Both catalytic below efficiency codes(I dont know the exact codes). But we put O2 sensors spacers in both downstream sensors on 31st may. car ran smooth but it had one o2 sensor code P0161.”

“P0161 relates to the O2 sensor's heater circuit, not its feedback circuit. A heater circuit code almost always means either a bad heater circuit inside the sensor or a fault in the heater control circuit.”

“A heater circuit code almost always means either a bad heater circuit inside the sensor or a fault in the heater control circuit. A misfire can quickly ruin a brand-new cat.”

“But we put O2 sensors spacers in both downstream sensors on 31st may. car ran smooth but it had one o2 sensor code P0161. Car ran fine for 2-3 days(about 200km) then it started misfiring on Cylinder 3 again (P0303).”

“P0161 code and secondary p0420 after installing RV6 PCD So I installed the rv6 PCD’s because one of my cats became clogged so I decided might as just buy this and installed em. after installing them the next day I got a p0161 code saying something about the o2 sensor and a secondary p0420 , do I have to replace the oxygen sensor?”

“If you read carefully the primary Catalytic converters are hollowed out, so the sensors after the catalytic converters will most probably post a p0420 and/or a p0430 code.”