Circuit Description

1998 Oldsmobile Eighty-Eight LSSECTION Circuit Description

Knock Sensor (KS) is used to detect engine detonation (knock). When KS module in PCM determines that an abnormally high noise channel voltage exists, PCM will set DTC P0327.

Conditions required to set DTC are:

  • No active CKP, ECT, MAF, TP or VSS sensor DTCs set.
  • ECT greater than 167°F (75°C).
  • Engine load is greater than 3 percent.
  • TP angle greater than 3 percent.
  • Engine speed is 1000-4000 RPM.
  • Maximum system spark retard less than 15 percent.
  • System voltage greater than 9 volts.
  • PCM detect a KS 2 signal voltage within the calculated average voltage range.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.