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Home >> Mercedes Benz >> 2007 >> C280 Base >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Mixture Formation -- Self-Diagnostic System -- 203 Chassis - 1 Of 2 >> Self-Diagnostic System >> Fault code description - ME-SFI - knock sensor - AD07.61-P-4000-12A

Fault code description - ME-SFI - knock sensor - AD07.61-P-4000-12A

1 Fault code P0325 right
P0330 left
2 Fault storage Fault is stored immediately
  Activation of malfunction indicator lamp for engine diagnosis (EURO3/4) or CHECK ENGINE (MIL) USA ONLY Malfunction indicator lamp is not activated
3 Frequency of the test continuous
4 Checked signal or status Knock sensor signal (comparison value calculated in the ME-SFI control module)
5 Fault setting conditions   
  Lower limit approx. 0.10 V
  Upper limit approx. 4.98 V
6 Test prerequisites
  • engine at operating temperature
  • engine speed < 2000 rpm
  • load < 40 %
  • anti-knock control not active
7 IMPORTANT In the case of faults, safety retarding of ignition timing is implemented at all cylinders