Knock sensors (A16/1, A16/2) | ||
1A | Fault code ( Readout on generic scan tool) | P2011 Knock sensor 1, on right (A16/1) (-) P2038 Knock sensor 2, on left (A16/2) (-) |
1B | Engines 112, 113 as of 1/01 Fault code ( Readout on generic scan tool) | P2011-[1] Right knock sensor 1 (A16/1), signal implausible/short circuit to positive (-) P2011-[2] Right knock sensor 1 (A16/1), signal implausible/short circuit to ground or line discontinuity (-) P2038-[1] Left knock sensor 2 (A16/2), signal implausible/short circuit to positive (-) P2038-[2] Left knock sensor 2 (A16/2), signal implausible/short circuit to ground or line discontinuity (-) |
2 | Fault storage Actuation of the engine diagnosis indicator lamp (EURO3/4) or CHECK ENGINE (MIL) malfunction indicator lamp | Fault is stored immediately The malfunction indicator lamp is not actuated |
3 | Checking frequency | Continuous |
4 | Checked signal or status | Knock sensor signal (comparison value calculated in the ME-SFI control unit) |
5 | Fault setting conditions | - The signal from the knock sensor must lie between 0.10 volts and 4.98 volts (direct voltage share). - The band width of the modulated noise signal must not be smaller than 0.05 volts (calculated in the ME control unit), otherwise no noises are recognized. |
6 | Check prerequisites | - engine at operating temperature - engine speed greater than 2000 rpm - load higher than 40% - knock control enabled - engine not under full loading - no fault in crankshaft position sensor and camshaft Hall sensor |
7 | | There will be retarding of the ignition timing on all cylinders for safety reasons if a fault occurs. |