O2 fuse

[wamb26]

Can anyone point me to info on blowing o2 fuses. started throwing o2 related codes, and I think the trans is in safe mode. Had the transmission serviced and they said it has no problems. Truck will idle all day but can't drive it. I have replaced All 4 O2 sensors twice as a set and nothing changed

 

[wamb26]

05 QC 47000 miles bone stock

 

[rbabody]

Can anyone point me to info on blowing o2 fuses. started throwing o2 related codes, and I think the trans is in safe mode. Had the transmission serviced and they said it has no problems. Truck will idle all day but can't drive it. I have replaced All 4 O2 sensors twice as a set and nothing changed

So what codes r you getting?? Sounds like a curcut problem.

 

[ViperPete]

Check the wiring harness. Maybe a clip is melted.

 

[wamb26]

P0031 2/1 o2 sensor heater circuit low
P0051. 1/1. o2 sensor heater circuit low
P0136. 1/2. o2 sensor heater circuit malfunction
P0152. 2/1. o2 sensor shorted to voltage
P0132. 1/1 o2 sensor shorted to voltage
No melted damaged corroded or pinched wiring or plugs found.
I currently have the fuse block out of the truck. All pins and plugs appear as new.

 

[rbabody]

P0031 2/1 o2 sensor heater circuit low
P0051. 1/1. o2 sensor heater circuit low
P0136. 1/2. o2 sensor heater circuit malfunction
P0152. 2/1. o2 sensor shorted to voltage
P0132. 1/1 o2 sensor shorted to voltage
No melted damaged corroded or pinched wiring or plugs found.
I currently have the fuse block out of the truck. All pins and plugs appear as new.

I would start at the o2 harness plug in and ohm out each pin from the pcm and hope it didn't short out the driver in the pcm.

 

[wamb26]

Thanks for the info. Hopefully I will be able to put some hours in it this week, I'll let you know what I find