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1997 XJ6 with P1138 code plus exhaust just started not coming out of the passenger side tail pipe. What type of O2 sensor would I need to buy. Since I'm not sure about it being upstream or downstream. Any help?
1997 XJ6 with P1138 code plus exhaust just started not coming out of the passenger side tail pipe. What type of O2 sensor would I need to buy. Since I'm not sure about it being upstream or downstream. Any help?
I expect you realise this, but if there's really no exhaust coming out of one of the tail pipes, you're in need of more than a lambda sensor!
Does the car have 2 separate cats or is the exhaust mostly one but it branches off? I was originally getting the P0430 code but now it has switched to p1138. Any ideas what's wrong
Guys: It just not that easy that it tells you (or the ecu) which sensor... If the sensor is reporting "bad" data, then either the data (lack of cat efficiency in this case) or the sensor is bad. But you don't know which it is. The correct diagnostic procedure is to scan the sensor feedback and watch for "cycles' A little google will help you figure it out.
BTW, P430 and P 1138 are apparently different banks, so pay heed to the first "Possible Cause" shown in the attached picture!
Last edited by sparkenzap; 02-22-2014 at 03:21 AM.
USA car = 4 cats and 4 O2 sensors! The code tells you that it's the second sensor (downstream) on the front (cylinders 1,2,3/Bank 1) exhaust pipe. It is visible.
But check the "easy" things first, namely that the 4 wires from that sensor are unharmed and intact, and the connectors are properly joined (not easy connectors to reach, at the rear of the engine below the windshield wiper housing).
+1 Ross, you noticed different banks, P0430 is from Bank 2.
The exhaust pipes combine into one, and then split into two again. Maybe one path is blocked by rust, or maybe there is a gap in the pipe along the way. I believe if this happened after the join (along the tailpipes) there would not be a serious effect. There was a thread recently on this subject but I couldn't find it in a quick scan, sorry. The poster found debris inside the tailpipe as I recall.
1997 XJ6 with P1138 code plus exhaust just started not coming out of the passenger side tail pipe. What type of O2 sensor would I need to buy. Since I'm not sure about it being upstream or downstream. Any help?
bump to see if there was resolution for this. I get the same code all the time. I clear the code and about 50 miles later I get it again. Same car as OP.