How To Test Upstream Oxygen Sensor 1 with a Low Cost Scan Tool
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- Опубліковано 22 бер 2023
- How to tell if a bank 1 sensor 1 upstream 02 sensor is bad or good with a scan tool using a Toyota Corolla as an example.
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How To Test an Oxygen Sensor with a Low-Cost Scan Tool
1. Start the engine.
2. Find the 02 sensor volts in live data or data stream.
3. Pump the brakes.
4. The 02 sensor volts should go up, then down, and back to the original state.
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I have just learnt something NEW. You nailed it in a few minutes pal. I'm subscribing right away!!!
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That was super helpful especially because I have the same scan tool. Thanks!
WOW! Thank You So Much!!!
Super clear and helpful video! Is there also a test for the downstream sensor?
Ur a real 1
Is testing the down stream sensor the same method? TY
Is you test on an O2 sensor or air/fuel sensor? I thought O2 sensor voltage was between 0.1 and 0.9 volts for upstream O2 sensor.
If the actual sensor reading is good, why am I getting a bad reading on the Air fuel sensor heater circuit response malfunction? What causes the circuit response malfunction?
Test method 80 fail for bank 1 sensor... What does it mean?
How do you test the downstream sensor?
Unless I missed it, you didn't specify this is a wideband o2 sensor. For narrowband o2 sensors this check won't work.
I have a 2004 Toyota Sienna with the 3.3 V6. At idle, both my upstream sensors will hover around 3.2. When I pump the brakes they will each go up to about 3.5 then go down to about 2.8 then back to 3.2. Does that sound correct?
There usually is a bigger jump but it did move so likely good.
Same
My b1s1 stayed at 0.00, it jumps to 0.015 and then back to 0.00. Is this sensor bad and need to be replaced?
Pretty sure
I have a Toyota Corolla 05 i'v check everywhere I can't find the fuel tank pressure sensor i'v Google it and it's not where it said it would be next step is to drop the tank
It should be on the top of the fuel pump.
@@HVAC_Mechanic it's not it's not on the tank or the charcoal canister or the fuel rail
Look for your part in your local auto parts store parts diagrams before taking things apart.
Mine say -127.000 that means it’s bad I’m guessing….
My reading shows 0.000 for bank 1 sensor 1