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Home >> Mercedes Benz >> 2000 >> ML430 >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Mixture Formation - 163 Chassis (3 Of 4) >> Self-Diagnostic System >> Anti-knock control in the hardware fault control unit, ME-SFI fault code description - AD07.61-P-4000-41AA

Anti-knock control in the hardware fault control unit, ME-SFI fault code description - AD07.61-P-4000-41AA

    Anti-knock control, hardware fault
1 Fault code
(USA ONLY Display on generic scan tool)
P200A (-)
2 Fault storage
Activation of the engine diagnosis indicator lamp (EURO3/4)
or CHECK ENGINE (MIL) malfunction indicator lamp USA ONLY
after expiry of test duration and fault
No actuation of indicator lamp
3 Checking frequency After each time anti-knock control is switched off.
4 Checked signal or status Anti-knock control hardware test.
5 Fault setting conditions  Fault must occur at least 10 times.
6 Check prerequisites Engine at operating temperature
Load decreases (anti-knock control switched off).
7 IMPORTANT If a fault occurs, the knock signal amplifier in the ME-SFI control unit is defective.
Replace ME-SFI control unit.