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 MANUALSAUDI2001A6 AVANT QUATTROREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMIGNITION SYSTEM - 2.8L V6 ATQIGNITION SYSTEMIGNITION SYSTEM, CHECKINGKNOCK SENSORS, CHECKINGPROCEDURE
2001 Audi A6 Avant Quattro
Knock sensors, checking: Procedure
2001 Audi A6 Avant QuattroSECTION Procedure
For component locations, see COMPONENT LOCATIONS, OVERVIEW .
NOTE:
- Knock Sensor (KS) 1 -G61- and Knock Sensor (KS) 2 - G66- themselves cannot be electrically tested.
- Use only gold -plated terminals when servicing harness connector for knock sensors.
- For the knock sensors to function properly, it is important that tightening torque be exactly 20 Nm.
- Check harness connector from knock sensor to wiring harness for corrosion.
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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.