2004 S40 T5 O2 sensors
#1
2004 S40 T5 O2 sensors
Hi there guys and gals!
I have my son's S40 2004 with 140k with O2 sensor problems.
Diagnostic tool says
P0031 : HO2S Heater control circuit Low bank 1 sensor 1
p0037 : H02S Heater Control Circuit Low Bank 1 sensor 2
I replaced sensors cleared ECU and it came back again in less than 20 minutes driving..
I've checked the Harness connector I am getting 3 volts instead of 12 v but Am unsure this is the correct value on VOLVO .. I am a do it myself person.
I Checked the fuse box and none is tagged with O2 sensor feed label or such ...
is the 3v value correct ? , or what's the correct value?
Any help greatly appreciated..
I have my son's S40 2004 with 140k with O2 sensor problems.
Diagnostic tool says
P0031 : HO2S Heater control circuit Low bank 1 sensor 1
p0037 : H02S Heater Control Circuit Low Bank 1 sensor 2
I replaced sensors cleared ECU and it came back again in less than 20 minutes driving..
I've checked the Harness connector I am getting 3 volts instead of 12 v but Am unsure this is the correct value on VOLVO .. I am a do it myself person.
I Checked the fuse box and none is tagged with O2 sensor feed label or such ...
is the 3v value correct ? , or what's the correct value?
Any help greatly appreciated..
#3
Hi,
thanks for your reply, is that one called something around light bulb fuse?
its was blown and I replace and blow it again, I have the car with mechanic doing water pump replacement.. so i am unsure if same fuse that your showing here..
so it should be more that 3 volts.. then..
i knew it could be a fuse.., when i get the car back I will come back here..
Thanks.. for ur help.
thanks for your reply, is that one called something around light bulb fuse?
its was blown and I replace and blow it again, I have the car with mechanic doing water pump replacement.. so i am unsure if same fuse that your showing here..
so it should be more that 3 volts.. then..
i knew it could be a fuse.., when i get the car back I will come back here..
Thanks.. for ur help.
#4
Hi,
The fuse keeps getting nailed, I check harness cables for any short disconnected O2 sensors to see if they are not the culprit but nothing, I was reading somewhere that it could be vacuum pump circuit for brake servo ?
@habbyguy you have more information , i really appreciate your help.
The fuse keeps getting nailed, I check harness cables for any short disconnected O2 sensors to see if they are not the culprit but nothing, I was reading somewhere that it could be vacuum pump circuit for brake servo ?
@habbyguy you have more information , i really appreciate your help.
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