Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la
If it fails: lemon-manuals.org.ua

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Knock Sensor: Testing and Inspection

Diagnostic Trouble Code (DTC) P0327 will set when Knock Sensor (KS) line is shorted to ground. Refer to DTC P0327 Knock Sensor Noise Channel Low Voltage. Testing and Inspection