MIL Code P0138

The place to "speak geek"
Post Reply
mix
Posts: 9
Joined: Fri May 09, 2008 2:44 pm
Location: Turriff

MIL Code P0138

Post by mix » Mon May 26, 2008 5:16 pm

Hi

A bit of give and take here.........I have bought an OBDII/CANBUS reader which has read/reset the codes from my 2004 S2 IIIS. If there is anyone in the Aberdeen area that would like me to try and read the codes on their cars I'd be happy to arrange to meet them and give it a go. Feel free to PM me to arrange a meet.

Now the take.......I have code P0138 reported 'Post Cat sensor high voltage' 'voltage >2.0 volts'. When I watched the sensor in real time after clearing the fault, (engine cold), it started at 0.5V where it remained for about a minute, then it began to climb slowly until it reached 1.275V at which point the MIL light came on again for fault P0138.

Would I be correct in assuming the post cat lambda sensor needs replacing?

Regards Mick
Top
User avatar
kenny
Posts: 7666
Joined: Thu Mar 10, 2005 9:10 pm
Location: Bearsden

Re: MIL Code P0138

Post by kenny » Mon May 26, 2008 5:20 pm

mix wrote:Would I be correct in assuming the post cat lambda sensor needs replacing?

Regards Mick

Yes, same thing happened on mine.
Top
Post Reply

Return to “Technical”