[dcarrb]

Stored codes from my teal SVX:
#22 knock sensor right
#28 knock sensor left
#37 oxygen sensor left

The knock sensor code explanation reads, "Abnormal voltage in knock sensor monitor circuit."

Questions:
1) Could some fault other than bad knock sensors affect the "monitor circuit"?
2) What's the likelihood that both knock sensors could fail pretty much simultaneously?

CEL is intermittent and rarely on for 2-3 minutes of a 15-minute drive. Car runs fine. Fuel economy could be just a tad off.

Thanks in advance.
dcb