Hello,

I am intermittently getting a check engine light, it has come on twice in the last week. I did the key dance in my 2005 Grand Carvan (approx 69,000 KM) and got code P0138.


P0138 Downstream O2 Sensor Shorted To Voltage


The only posting I saw says to stay away from Bosch O2 sensor and stick with NGK O2 sensors.

Any other suggestions ?
Should I change just the downstream sensor or change both at the same time ?


Thanks

 

u can pop one in if it comes back then u have another issue.

 

Crazy CEL, is driving me crazy.

It was on all day Sunday, now it is off again! I wonder if the O2 sensor is flaky or I have a bad connection somewhere ? How long should I let this go, I was planning on taking into my local service shop (not a dealer) on this Friday ?

Thanks
Paul

 

if the cel starts to bink then u need it in yesterday if u go much longer like that then u will melt or damage your converter.

 

Thanks for the info, I will take it in tomorrow, so I can have the peace of mind and maybe save some money down the road.

Thanks Again.
Paul

 

I had the downstream O2 sensor replaced and all is well.