dls91

So recently i posted a thread because my s2000 threw a cel. p0135 which turned out to be primary o2 sensor so i had purchased that and changed in over. No more light. lovely! Its been around a month since the change and now driving home the engine light has come back on. now showing the code of p0138. 02 sensor circuit high voltage bank 1 sensor 2. And a pending code of p0136 o2 sensor circuit bank 1 sensor 2. Am i right in saying this is a code for the secondary sensor now that plugs directly into the cat?

noodels

P0137 6 - 3 P0136 ____ Secondary Heated Oxygen Sensor Circuit Low Voltage (Sensor 2)
P0138 6 - 3 P0136 ____ Secondary Heated Oxygen Sensor Circuit High Voltage (Sensor 2)
P0139 6 - 3 P0136 ____ Secondary Heated Oxygen Sensor Slow Response (Sensor 2)

Yes its the one in the cat
ps
I would not rule out compatibility of the Primary you have just installed
pps
According to my recent Mot testing readings, mine is showing slow response times and jumpy readings on the screen <though I fitted a secondary>month ago.
It passed though after a few goes holding it at at 2.5-3k rpm

dls91

any ideas of the cheapest place to purchase?

Rickard1982

Are you running a decat?

noodels

Mark has Berk HFC
Maybe considering PLX DL6 Gen 4 wideband as better resampling times £156

Maybe you should try refitting your old one and see what happens ?

dls91

Berk high flow.

Rickard1982

Clear the error it's nothing wrong
I can't explain it proper but it's got something to do with flow of fumes bla bla
Creates an error on ecu
Mine time to time does that and it's always those 2 sensors

dls91

cleared the code. we will see how long it stays off for.

richmc

Is yours an S2000 or a Volkswagen diesel?

dls91

haha well earlier i cleared the error and then decided to do a tct repair again! as it had started to rattle again. after she was silent again took it for a burn and no light has appeared yet so all good!