JapCarForum Car Manufacturers Lexus/Toyota 02 Sensor Heater issue

02 Sensor Heater issue

02 Sensor Heater issue

VVT-Einstein
Junior Member
18
31-10-2021, 05:29 AM
#1
Hi guys

I've got the EML on in my IS200 with code P0135, 02 Sensor Heater Circuit Bank 1 Sensor 1.

I've tried replacing the sensor and deleting the code but it's come back straight away. The sensor itself must be working fine as fuel consumption and such hasn't been effected at all. I understand there's a heater element built into the sensor but I imagine this is working fine in the new sensor. Any ideas what the issue could be?

Cheers!
VVT-Einstein
31-10-2021, 05:29 AM #1

Hi guys

I've got the EML on in my IS200 with code P0135, 02 Sensor Heater Circuit Bank 1 Sensor 1.

I've tried replacing the sensor and deleting the code but it's come back straight away. The sensor itself must be working fine as fuel consumption and such hasn't been effected at all. I understand there's a heater element built into the sensor but I imagine this is working fine in the new sensor. Any ideas what the issue could be?

Cheers!

Rabster
Posting Freak
10,234
01-11-2021, 11:34 AM
#2
it could be a cooked sensor wire if you have put a new sensor in :confused:



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Rabster
01-11-2021, 11:34 AM #2

it could be a cooked sensor wire if you have put a new sensor in :confused:




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VVT-Einstein
Junior Member
18
05-11-2021, 11:40 AM
#3
Yeah, that's definitely a possibility. If I use a sensor simulator that includes the heater element signal to get rid of the EML will this effect fuelling/engine running?
VVT-Einstein
05-11-2021, 11:40 AM #3

Yeah, that's definitely a possibility. If I use a sensor simulator that includes the heater element signal to get rid of the EML will this effect fuelling/engine running?

Sparkystav
Administrator
14,683
05-11-2021, 01:55 PM
#4
On that one it will. That one helps control fuelling

OutlawJapClub Admin Team
Sparkystav
05-11-2021, 01:55 PM #4

On that one it will. That one helps control fuelling


OutlawJapClub Admin Team

myheroduane
Junior Member
1
11-11-2022, 03:48 AM
#5
Could be a small crack in exhaust giving false readings.

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myheroduane
11-11-2022, 03:48 AM #5

Could be a small crack in exhaust giving false readings.

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VVT-Einstein
Junior Member
18
11-11-2022, 10:48 AM
#6
Hmm, I changed the manifold since getting the error code but it still comes on... I've kinda just resigned myself to the fact it's always on now. Engine runs fine and still get about 400 miles to a tank, just annoys me a bit that the light is always there on the dash
VVT-Einstein
11-11-2022, 10:48 AM #6

Hmm, I changed the manifold since getting the error code but it still comes on... I've kinda just resigned myself to the fact it's always on now. Engine runs fine and still get about 400 miles to a tank, just annoys me a bit that the light is always there on the dash

Sparkystav
Administrator
14,683
11-11-2022, 09:14 PM
#7
There must be an issue with the wiring or Ecu if it comes on straight away. Normally the o2 sensors that a while to come back on

OutlawJapClub Admin Team
Sparkystav
11-11-2022, 09:14 PM #7

There must be an issue with the wiring or Ecu if it comes on straight away. Normally the o2 sensors that a while to come back on


OutlawJapClub Admin Team

VVT-Einstein
Junior Member
18
12-11-2022, 03:36 AM
#8
Yeah, also if I delete the code while the engine is up to temperature the light stays out, but if I delete the code before it's up to temperature it comes back on...
VVT-Einstein
12-11-2022, 03:36 AM #8

Yeah, also if I delete the code while the engine is up to temperature the light stays out, but if I delete the code before it's up to temperature it comes back on...

Sparkystav
Administrator
14,683
12-11-2022, 10:30 AM
#9
Could be a heater fault then with the sensor circuit

OutlawJapClub Admin Team
Sparkystav
12-11-2022, 10:30 AM #9

Could be a heater fault then with the sensor circuit


OutlawJapClub Admin Team

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