Hi Scotty. I have a 2007 Honda Pilot EL-L with 140,000 miles on it. Today while driving in stop and go traffic for an hour straight with the outside temperature of 110 my car’s temperature gauge went a little past halfway, about 1/3 is normal and my A/C started to blow warm air. Then the check engine light came on and I got the code P0137 which I see means one of my O2 sensors might have a problem. After the traffic cleared I drove for about 45 minutes and the car’s temperature returned to normal and the A/C blew freezing cold air. I reset the code and it hasn’t come back.
Could the outside temperature of 110 and the hour traffic jam caused the O2 sensor to have a problem? Sound I change it or do you think there is another problem?
Thanks
make sure the cooling fans work properly
https://carkiller.com/scottykilmer/qa/temporary-run-to-230-degrees/#post-125285
https://www.youtube.com/watch?v=evpaTW2WJ5Y
Is Bank 1 sensor 2 on the passenger side after the CAT?
after the cat yes, but I wouldn't worry about the O2 sensor unless the code comes back after you fix the overheating issue.
Hey Sprender, Hello from California. Have you changed out the coolant since you bought it? All new coolant come with corrosion inhibitors but with time those can also wear out and you can start to get a thin film of corrosion around the inside of the piston sleeves and and radiator. With even more time the coolant itself can become a conductive liquid with all of the free ions floating around in it. At that point you will start to see all kind of weird electrical problems since many sensors will share a common ground with the engine. I'll agree with mountainman about checking the cooling fans also. Many cars these days will use a big dual overlaping radiator/condenser system. The second a/c fan won't kick on until you activate the a/c and can fail on its own causing an overheating problem
No, never changed the coolant. Guess it’s time to do that.
Coolant should never, ever touch piston sleeves. I think you meant water jackets.
Coolant does not cause electrical problems. This is preposterous.
I did mean water jackets. I have personally had to clean off corrosion on water jackets left over from people using old coolant or tap water in their cooling system. Old coolant can cause electrical problems especially with newer cars since their sensors rely on lower voltages. Scotty says so in a video from 2018 at 2:30
https://www.youtube.com/watch?v=qYX4kRaOvTM
The engine block is always at zero volt potential. Coolant will not change that.
Check ALL the components of the cooling system, radiator, cap, fans, heater core, plumbing, thermostat, temp sensor, etc.
