The code is thrown do to seveal reasons the 02 sensor could be dirty or it just could be worn out, you could pull it and clean it and try it again or just replace it and be done with it. By any chance, do you have the infamous cracked exhaust manifold? If you find one missing let us know and we we'll add it immediately! Put the key on the ignition, turn the switch to on but do not start and watch the sweep hand do its thing. If you find water in the connector, locate the source of the leak. If it cannot reach that temp it sets that code. So you should chech it on our car models. Answer On the firewall, near the strut tower - depending on year and engine depends if it is on the passenger side or driver's side - you will find a connector that looks like a trapezoid.
It should have a smaller connector ground next to it. In this video I show you how I diagnose and repair a P1133 02 Sensor Insufficient Switching, Bank 1 Sensor 1 on a 2003 Chevy Avalanche. Hard to start o long cranking time to starter is gona be the first symtoms. When mine cracked I had an '05 Envoy before the Avalanche , the first sign was a little exhaust noise when starting cold that went away as the manifold got hot. From these graphs at idle its switching at 0. I just helped a friend with this problem.
Thank you for using FixYa, have a nice day. Still trying to understand lazy, do you mean slow switching frequency ie the amount of times it switches from rich to lean and lean to rich in say 1 second? It proves the cat is working to smooth the combustion byproducts. If your spark plugs look good, problems with your ignition system can also preventing a spark. With a multimeter, +lead, on pin, -lead to ground. The valve is located at the passenger side by the transmission dipstick tube under the intake tube. This concern may not set any diagnostic trouble codes. At idle I lost my nice 50% duty cycle and the frequency is much slower at 0.
The easiest way to find out about any recalls on your vehicle is to contact your dealer. Now don't ask yourself; What should you do with P1133 code? These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage. What you wrote describes issues perfectly. I don't have the specifics on the parameters for getting the passive test to run outside of the engine has to be at operating temp. It seems others have reported the same thing, so maybe some gauges really do read and display the temp instead of a made up, calculated number. Didn't know you had been stalking me.
The cracks were dark against the red brown of the iron. And of course hunting will give you the exact symptom you have. The holes get clogged with carbon and the exhaust gas flow into the sensor chamber is restricted. Yes, it is the 4. I have only replaced the upstream sensor. I didn't do mine when I did the stat. So, moral of the story is: give it a try, but don't hold your breath.
Just adding more information about diagnosing my P1133, I have attached a picture of my gauge, it always runs at 2 notches below 210. I do use a scope if I want to compare the sensors reading directly to the pcms reading. They will provide valuable info! Is there any more waveforms or data I can extract to aid in the diagnoses of this issue? Is this at idle then? But you'll still need a manual to be sure the right pin, I can't describe it for sure , and to know what the codes mean. Slow sensor means slow repetition rate from rising edge to rising edge. Would you define a slower switching frequency as a lazy sensor? Engine does not surge in relation to needle movement I, as well as dealership have cleaned the throttle body. While there might not be a recall on these yet, there needs to be! I guess the answer to the question is. Disclaimer: Due to factors beyond the control of the Big Dog50001 Automotive Channel, it cannot guarantee against unauthorized modifications of this information, or improper use of this information.
Is this at idle then? It is truly a must have in your tool collection. Is the correct upstream O2 sensor for a 2004 I6 Chevy trailblazer part number 21054 from rockauto? How fast should these be switching on a trailblazer? Please check below for your specifi P1133 code. It tracks most things well, but some things on this vehicle I'm not too sure about. Does anyone know the bare minmum switch count expected to see before it throws a P1133? Many of us do it every 30K. I would strongly advise that you first buy a Haynes Repair Manual for your vehicle before you start. T his is the O2 sensor located in the exhaust manifold.
If I knew that i could easily calculate the frequency of expected O2 data. I don't understand why the heater circuit picture i posted above doesn't have constant duty cycle. What happened to my o2 sensor? When I picked up stalled on the spot. Water can leak into the connector from clogged sunroof drains, A-pillar leaks, or windshield or cowling leaks. In which case it is easy to do and its easily accesible in the engine bay.
That means everything is good to go. This is a Code 11. Obviously, looking at the scope, some sensors are faster than others. Second thing I have noticed recently is my temp gauge sits 1 to 2 ticks to the left of 210 on my dash. I have a 05 Canyon pulling this code as well as a P1201 code.
Would the experts on here agree? At idle you can see nice 50% duty cycle between rich and lean, also the freq is at. Any help would be greatly appreciated! I do know, it likes to be around 600 deg F, I would think it would shut off at the desired temp. You might have to do it many times to catch it so be patient. These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage. Its brand new, it worked for about 2-3 mintues and now its slow again.