Hello every one, i have a 96 disco 7, and i have a code that reads "knock sensor Bank 1 high performance" and my CEL is on, i changed this sensor and after about 250+ miles is back on. any sugestions

 

Are you using high octane fuel or the cheap stuff?
When was the last time you did a tune up?

 

hello!!, i bouth this truck back in april 2012 and it was in a real bad shape leaking everywhere, CEL was on with like at least 10 codes, bottom line it was a huge POS, i started working on it since then but i always put 93 octane(premium) only, i changed plug, wires, (oil, fuel, air) filters, i changed 2 Coils packs, new alternator, air idle valve, PCV valve, i changed cats, put new gaskets, tranny case was craked, i repaired that too, new oil presure switch, TPS, CPS. the bottom line i have done just about every maintenance posible to bring this truck drivable, but this is new never had that code popped on me before now, but there is one other code, O2 sensor Bank1 Upstream also, i dont know if either one is related, i hope you got a better picture....Thanks

 

If you are getting a slow response or no response O2 code then it needs to be replaced, I would go ahead and replace both fronts.
Amazon has the best price on them.
I do not know if that can cause your knock sensor code or not.