P0642 again
P0642 again
Okay been driving it for a couple weeks no codes after the spate of P0420 then P1000 codes running sweet
then tonight I take the wife out for dinner get back home engine light on I get my scanner out dreaded P0420 again erased code P1000 there again till I drive it for a while then the P1000 goes
So I decided to look into it a bit more seems I am not the only one its something to do with my high flow cats and exhaust system found a company that used a signal conditioner on the rear 02 sensors of a 04XJR with full custom exhaust seemed it was throwing regular P0420 codes followed by P1000 exactly like mine is doing
https://splitsec.com/jaguar-xjr/
I have also read that if I add a 02 spacer to take the rear 02 sensor out of the direct path of the gasses it should work as well O2 Sensor Spacer
Any of the performance XJR guys have this problem I am running 200cell cats and twin 2 1/4 inch pipes out of the headers into a X pipe
I was otherwise thinking I have done a few mods and would like to get the engine flash tuned would the flash tuning be able to fix this problem any info appreciated
then tonight I take the wife out for dinner get back home engine light on I get my scanner out dreaded P0420 again erased code P1000 there again till I drive it for a while then the P1000 goes
So I decided to look into it a bit more seems I am not the only one its something to do with my high flow cats and exhaust system found a company that used a signal conditioner on the rear 02 sensors of a 04XJR with full custom exhaust seemed it was throwing regular P0420 codes followed by P1000 exactly like mine is doing
https://splitsec.com/jaguar-xjr/
I have also read that if I add a 02 spacer to take the rear 02 sensor out of the direct path of the gasses it should work as well O2 Sensor Spacer
Any of the performance XJR guys have this problem I am running 200cell cats and twin 2 1/4 inch pipes out of the headers into a X pipe
I was otherwise thinking I have done a few mods and would like to get the engine flash tuned would the flash tuning be able to fix this problem any info appreciated
Last edited by doc; Jul 24, 2014 at 07:58 PM. Reason: got a few cars and both have codes coming up regularly and I got the 2 mixed up
Okay I was going to try the 02 spacers then spoke to a mate he said might work might not
I am taking it to chiptorque next week going to have the car remapped while its getting done I will be able to see all the parameters are suited to the mods I have done also get it into a good state of tune again
will post how it goes
I am taking it to chiptorque next week going to have the car remapped while its getting done I will be able to see all the parameters are suited to the mods I have done also get it into a good state of tune again
will post how it goes
Senior Member
Joined: Jun 2014
Posts: 257
Likes: 131
From: The Netherlands
It's completely normal for P1000 to appear after your reset the codes. It means the car hasn't completed it test cycles after the last reset, which of course is logical just after a reset. After completing the test cycles it changes to P1111.
Or is the P1000 code appearing all by itself? No sure what you're writing.
Guus
Or is the P1000 code appearing all by itself? No sure what you're writing.
Guus
It's completely normal for P1000 to appear after your reset the codes. It means the car hasn't completed it test cycles after the last reset, which of course is logical just after a reset. After completing the test cycles it changes to P1111.
Or is the P1000 code appearing all by itself? No sure what you're writing.
Guus
Or is the P1000 code appearing all by itself? No sure what you're writing.
Guus
Its thrown a code this evening its the dreded P0420 again I am not going to erase it this time so when it gets tuned next week they can tune for the new cats and 02 sensors
I have 2 cars throwing codes at the moment
the Wife's Jeep is throwing P0642 and the XJ8 is throwing P0462
so forgive me guys if I get the numbers wrong (LOL)