[01dakotaqc]

i got a check engine light today, and the codes are:

p0031-bank 1/1 oxygen sensor heater control circuit low
p0051-bank 2/1 oxygen sensor heater control circuit low
p0152-bank 2/1 oxygen sensor shorted to voltage
p0138-bank 1/2 oxygen sensor shorted to voltage
p0158-bank 2/2 oxygen sensor shorted to voltage
p0136-bank 1/2 oxygen sensor shorted to voltage

i checked my fuses under the hood and iside the truck and none of them are blown. i visually inspected the wires from the o2 sensors and none of them are burnt or touching anything. i know that it is very unlikely that all of the o2 sensors would have a problem at the same time, so what can be the problem?? im stumped and i really dont want to go trying to figure this out on my own. thanks for the help!!

 

[hskrRT]

I think there iis a relay for the O2s as well. You may want to look for one of those. Other than that, reset the PCM. If they come back, then worry about it. If not, then no big deal.

 

[01dakotaqc]

I think there iis a relay for the O2s as well. You may want to look for one of those. Other than that, reset the PCM. If they come back, then worry about it. If not, then no big deal.

i did reset the pcm and they come back. i guess i have to break out the fsm and start reading.. thanks for the help

 

[01dakotaqc]

i just swapped the relay with a good one, and it still threw p0031 and p0051. what else could cause this?? thanks!!

 

[Ranger50]

Well, since the heaters are on ALL the time to some degree, I would say they have failed internally. Replace them, clear codes, and carry on with your life.

Brian

 

[01dakotaqc]

Well, since the heaters are on ALL the time to some degree, I would say they have failed internally. Replace them, clear codes, and carry on with your life.

Brian

i just replaced the 20a fuse for the o2 sensors that was in the PDC and i started the truck and let it run and i have no codes now. i will have to wait and see what it does when i drive it. i hope this fuse fixes everything.

 

[TurboBlew]

was teh fuse blown?

 

[01dakotaqc]

was teh fuse blown?

i guess so because i just drove the truck and i got no codes.

 

[dakotanut]

It will happen again. Just a matter of time. You need to find out why it blew. Not just stick another one in. You have a problem with your wires or O2's. Something there shorted them out and blew the fuse. It could be together or to ground. I don't know but know it needs to be repaired.

 

[01dakotaqc]

It will happen again. Just a matter of time. You need to find out why it blew. Not just stick another one in. You have a problem with your wires or O2's. Something there shorted them out and blew the fuse. It could be together or to ground. I don't know but know it needs to be repaired.

i will check the wires if the codes come back.

 

[moore_716]

when my sensors went it was within days of each other. I got them from oxygengeek.com. good prices and fast shippin. No issues since then.