Knock control
â–¶ How to fix
- Check lines on knock sensors - Check plug and socket connection on knock sensor and EGC4 - Check knock sensor installation - Renew knock sensor - Renew EGC4
What you'll see
No driver-visible symptom recorded.
System reaction
- Engine is in use with a security-offset of the ignition angle in order to not destroy the engine with knocking combustion. Possible exhaust degradation and hightened temperatures in the turbo charger. - Torque is limited
Diagnostic depth
Detection
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Possible cause
- The diagnosis intents the integration result of knock sensors and the unobscured aperture of knock-control. Possible cause are transmission problems in "Complex Driver", problems with signal processing, problems with generating unobscured aperture or problems in process control. As a rule: Control unit defect