Hi, ive recently purchased a 2001 K11 1.0 se with 40,000 miles on the clock. The first day I got it the engine light came on and I got the code PO135, so I replaced the post cat lambda sensor as it had split in half (obvious fault) all was then well for two days until the engine light came on again. It now gives me the code PO137 which is a low voltage/ low oxygen fault for that sensor. I've checked for exhaust leaks and checked all the connections. I can't imagine it being the cat after only 40,000 miles? Could it be a faulty sensor? Any help would be great!!
Ryan
Ryan
