P0031 Heated oxygen sensor (HO2S) 1 Bank 1 heater voltage low

Tiny
ADISON CANGA
  • MEMBER
  • 2005 RENAULT SCENIC
  • 8.3L
  • 4 CYL
  • 2WD
  • MANUAL
  • 120,000 MILES
I have a car that works with petrol and gas. When I start the engine I get this alarm "heated oxygen sensor (HO2S) 1 Bank 1 - heater voltage low ". I reset the alarm with OBDII program and the alarm disappear and I can work with gas, but when I turn off the car and start again the alarm come again and I cannot work with gas any more only with petrol. Sometimes when I work in gas after alarm reset the car need too much gas to run because it turn off. I have also changed the sensor of HO2S but still the same.
Can you give me advise what can I do with this?

I have control the gas electrical packet and I have make some proves and than I heard something inside of gas packet like a burn noise. Now I can't work in gas any more and the level of gas is not anymore displayed in car display. What has happened?

I have change the air-fuel rate sensor. Should I change the sensor to the catalytic too?


Thank you.
Wednesday, July 5th, 2017 AT 1:50 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hello,

Your oxygen sensor has gone out for the first sensor on the #1 cylinder. Here is a guide that will help you get the problem fixed. This is an easy repair

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Please let us know what happens.

Cheers, Ken
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Friday, July 7th, 2017 AT 2:01 PM

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