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2005 Nissan Titan LE Gas Knock Sensor

2407 Views 4 Replies 4 Participants Last post by  Nissan-MasterTech
I have a 2005 Nissan Titan LE Gas w/ 197,000 miles throwing a Bank 2 knock sensor code and a cat below threshold on bank 2. I had the exhaust manifolds replaced last year w/ Dormans. So I really don't think that the cats are stopped up. Could the knock sensor be causing the cat code? First time I took it to the shop they said cat 1 and cat 2 where below threshold (i knew cat 2 was throwing the code that was the reason for it to go to the shop but that was the first time cat 1 threw a code) and the knock sensor code but the found a loose pcv hose and tightened it up, cleared the codes, watched everything and it seemed fine. Well I picked it up and drove 17 miles. Bam light back on so I took it back to the shop now they are saying all 4 o2 sensors are bad and of course the knock sensor also. Both times they said run seafoam and it should be fine. I don't know about that. Opinions?
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The knock sensor is a non check engine light code, meaning the KS will not turn on the light if it's the ONLY code in the system. In your case the P0430 code turned on the light , the KS code was just along for the ride so to speak.

The 430 code is most likely due to the aftermarket cat you put on it . I know OEM is expensive but they will last longer than an aftermarket one.
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