Ok, so I've gotten code 52 several times on my Boostbutton Cal'd SBEC in my 2.5 mitsu turbo, intercooled Dakota.
New 3wire O2 (NTK) now has 6k miles on it.
Is there a reading I can take with a DVOM to figure if it's a sensor failure? or do I need a wide-band scanner?
Resetting the SBEC and it runs great for a month or so till the 52 is triggered again.