Check Engine Light? O2 Sensor Heater Circuit Malfunction - Code P0141

good video ,, thanks for the info ,,, i have a 2009 mountaineer v8 and my check engine light just came on , when reading the code it show al 4 oxygen sensors are faulty ,, can this be right ?? ,, fuses are good ,, any adviced ? .. thank you .

My 2.4l has two wire O2s . Shows a heater circuit code? Checking the fuse next.

I think on the second testing on the tip of the oxygen sensor is not enough to say circuit is good because we need to test the wire from the tip of the O2 sensor to the pcm port, I’m I wrong?

Isn't it much easier to check the resistance between the heater circuit connector pins before examining other components?

So replacing it does what? 🤷‍♂️
Is it going to run better?
Is it necessary?
Sorry. Probably a dumb question.

test light is cool but would love actual readings. ie volts, ohms, etc

Thank you for the video

how to delect senors

Where does a heated o2 sensor go up or down stream I have 3 o2 sensor and only 1 heated but it doesn't tell me where it goes

Super informative video..need to check my issues now!

Hmm

Great video, thanks for sharing your knowledge

Good imformation.thanks

The sensor has 4 wires, how do you selected the pink to test voltage instead of others

Great video!

I have a 2011 Impala LS and I can't clear the P0036 and P0141 codes. I replaced the sensor, I have power on the supply side heater and the computer grounds as well. I ohmed out all 4 wires to the ECM and found continuity and no resistance. I believe either the heater is bad in the new sensor(Denso) or the ECM is faulty.

how d you find the fuse for that O2 sensor

Check the set of wires under your truck. Believe me i took this advice and when I inspected the wires under my truck where the transmission and the shaft meet. The wiring harness was rubbing so bad that it exposed the wires. Those wires lead to engine. As soon as i got them closed back up problem solved and my truck runs way better than before. Ever since i bought my 2009 suburban this is the best it ever ran. This got rid of this code and the other ones that had to do with faulty cpu code. Believe me an exposed wire can actually make your engine run bad and set off different codes.

How do you diagnose a p0133? I have a Jeep compass. Can't find fuse locations if it even has them. Pretty sure it wouldn't be and exhaust leak because b1s1 is right on top of the manifold. I've replaced the sensor every year now for 3 years. This time it was 2 days and code came back

I have looked at many many videos on my fault code P0037 and this one by far has given me the most in depth information on what may be the problem. Thank U!!!!!

this is what i was really looking for thank you very much

awesome clear explanation thank you

I have a 2003 Dodge Durango with 5.9l engine I told it for a smog test pass everything it didn't pass because hearter of the o2 sensor didn't pass but had engine codes at all can you please tell me why my car did pass smog I took another smog place it pass in one hour

Excellent video. I have a '99 GMC Sierra 2500 that has an intermittent engine light, P0141. I already changed the sensor once myself and it just came back on. It's off at the moment, but if/when it comes on again, now I know how to test it. Funny that twice when I had it in to the mechanic(s) for other things, they couldn't seem to figure it out🙄 Useless...

What if the fuse is blown

Can not having cats throw a code for heater circuit Malfunction?

Best video so for I have seen on utube. Excellent explanation

Please I need confirmation is bank 1 the left catalytic converter or the right ?

Gold! thanks 1A :D

👍

E46 can't start or cranking want will be the problem please

I have e46 1.8i can't start or cranking nothing

I appreciate it

Are you suppose to supply 12v directly to the pcm bypassing the load in the circuit? Could have just backprobed and should have had 12v on both heater wires Key on if the circuit was good,

Excellent video .

Hi great video. The test light pulsing i assume is ecm doing pwm to heat up sensor?

Would cutting off my cats make this code pop up

Extremely helpful video.

Awesome video. Tks

Fuses are energized but no voltage at plug. What do I do now? You don't say what to do if that is the case.

Awesome. Subbed

Put a seafoam in gas tank u be good

If both downstream o2 sensors are removed because of a newly installed turbo kit without cats , would these check engine light codes cause my 18 f150 v8 to go into limp mode at 50% throttle or higher? That's the issue I'm running into

How can I find the o2 sensor fuse on a 2010 Ford F-150 user manual?

Definitely one of the best videos,, well explained, detailed… It really helps to understand which the possible issues are and how to check them… 👍🏼👍🏼

Hi! What is the expected current flowing through an O2 sensors heater?
i measure 0.5A only, which would be some benign 7 Watts of heating power.
I measured 4 Ohms on the sensor which should give me more than 3 amps. Or is it pulsed and thus less?

Plus side of circuit is fine,
the cable to the PMU i still have to test.
If the PMU is the problem, what do do?

excellent video, you guys are the best!

Very nice video, perhaps I would add to measure the average resistance of the sensor itself, just to prove degradation of the element itself, but normally, there would be no continuity.
But how does the control unit of the car knows the element of blast ?

We need more people in the world like you great presentation short and to-the-point