2005 Yukon XL w 5.3L Flex Fuel showing Check Engine, Code = P0332

[Alaska]

2005 Yukon XL showing Check Engine, Code = P0332. Car runs great, no noticeable knocking or lack of power, no overheating on 87 octane gas. What is best way to troubleshoot? Reset code and see if it re-appears? Dealer said no hurry, bring it in later. Try a tank of higher octane? Will the code clear on its own?

[Jsdirt]

Could be just a bad knock sensor ... or it's wiring ... or ????

[txab]

Clear it. See if it returns. If so, knock sensor time

[Artey72]

Water settles under the intake and ruins the sensor and sometimes the wiring to the sensor.