NEED HELP P0300 p1514, engine power reduced, white smoke

mrrsm

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Oct 22, 2015
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Tampa Bay Area
P0332:
Definition
- Knock Sensor condition
Explanation - The PCM - (Powertrain Control Module Monitors the Knock sensor for errors.
Probable Cause:
(1) Knock Sensor is defective
(2) Check connector and wiring to sensor
(3) Engine mechanical condition involving a knock or rattle in engine
(4) Low fuel pressure

The Rear Knock Sensor 2 (KS2) is located on the Driver's Side of the GM 4.2L Engine, to the rear and just under the Starter. The recommended replacement component is GM Part # 12567446 ...under $50.00 and it is a fairly straightforward R&R. IIANM... You should not require a Tech 2 to make any corrections with the PCM...other than clearing the Codes...and ordinary OBD2 Scanners should be able to do that:

KNOCKSENSOR2LOCATION.jpg
 
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Mooseman

Moderator
Dec 4, 2011
25,996
Ottawa, ON
Something with the knock sensor. Either it's not plugged in right, it's defective or something with the wiring.
 
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