Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK2000PARK AVENUE BASE, 3.8 KREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM - SELF-DIAGNOSTICS - 3.8LDIAGNOSTIC TESTSDTC P0327: KNOCK SENSOR CIRCUIT - BANK 1 (EXCEPT CAMARO & FIREBIRD)CIRCUIT DESCRIPTION
2000 Buick Park Avenue Base, 3.8 K
Circuit Description
2000 Buick Park Avenue Base, 3.8 KSECTION 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, DTC will set. Conditions for setting DTC:
- No active CKP, ECT, MAF, TP or VSS sensor DTCs set.
- ECT greater than 140°F (60°C).
- Engine load is greater than 45 percent.
- TP angle greater than 10 percent.
- Engine speed is 1000-2500 RPM.
- Maximum system spark retard less than 15 percent.
- System voltage greater than 9 volts.
- PCM detect a KS 1 signal voltage within the calculated average voltage range.
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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.