Nov 22, 2012 · Well, P0139 has come back yesterday and remained on today. Original O2 sensor replaced Dec.10/2019 - NGK P0139 code came on/went off about 8 weeks ago. P0139 came on …

Oct 11, 2025 · I got a CEL on my 2009 Honda accord manual ex 2 door. About a month ago it came up and it was p0139 for the o2 sensor reading slowly. cleared it then it came back last week and now it …

Dec 17, 2020 · The code P0139 is a slow response on the secondary O2 sensor, a lot of times the heater is not working properly. It is not getting heated up enough to give a good signal.

Jun 11, 2020 · Hello, I have a 2013 Honda Accord EX-L 2.4 L 4 cylinder CVT with 162,000 miles on it. Recently I am getting the Check Engine/Malfunction Indicator Lamp light with the following code: …

Nov 26, 2023 · I got a CEL on my 2009 Honda accord manual ex 2 door. About a month ago it came up and it was p0139 for the o2 sensor reading slowly. cleared it then it came back last week and now it …

Jul 10, 2012 · I get it scanned at autozone and it comes up with code P0139 which says "Oxygen Sensor Circuit Slow Response (Bank1, Sensor2)". I search and see that this is the rear, lower o2 …

Oct 6, 2011 · P0139 - Maybe a bad O2 sensor? "Bank 1 Sensor 2" - is this the downstream sensor (that goes into the cat)? Just replace? P0171 - maybe replacing the O2 sensor will resolve the too lean …

Nov 18, 2013 · At 303k miles I had a check engine light and read code P0139: I cleared the codes, and after 3k more miles, I still had no check engine light. However, since I have >300k on the o2 sensor, I …

Feb 19, 2008 · Have a 2007 Honda Accord SE with 216,000 on it. It has the 2.4. Last week the light came on so I read the codes and got the two in the title. It still had the original front and back o2 …

Feb 24, 2025 · Hi again, I've been having issues with my '97 ETC. I've had a problem with a rough/high idle, weird start up, and sometimes engine power. Most days it runs perfectly fine but for some …