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Supplementary Fault Code Catalog for Liebherr D934/D936
The following technical documentation serves as an extension to the WIBAKO knowledge base, covering advanced control fault codes for turbocharger actuators (Wastegate) and the fuel injection system of Liebherr D934 and D936 series engines.
Fault Codes: Wastegate Actuators 1 and 2
| Fault code | Area | Type | Cause description |
|---|---|---|---|
| M0004AF38 | Wastegate 1 | Time out | CAN response timeout exceeded |
| M0004AF39 | Wastegate 1 | Bus off | Communication bus failure |
| M0004AF3A | Wastegate 1 | Mechanical | Broken return spring |
| M0004AF3B | Wastegate 1 | Mechanical | Gear damage |
| M0004AF3C | Wastegate 1 | Hardware | Control electronics hardware fault |
| M0004AF3D | Wastegate 1 | Sensor | Position sensor fault |
| M0004AF3F | Wastegate 1 | Calibration | Calibration process failed |
| M0004AF40 | Wastegate 1 | Adaptation | Lower stop learning process failed |
| M0004AF41 | Wastegate 1 | Power supply | Supply voltage fault |
| M0004AF42 | Wastegate 1 | Adaptation | Upper stop learning process failed |
| M0004AF43 | Wastegate 1 | Sensor | Loss of zero point reference |
| M0004AF9C | Wastegate 2 | Temperature | System overheating |
| M0004AF9D | Wastegate 2 | Deviation | Valve position fault |
| M0004AF9E | Wastegate 2 | Time out | CAN timeout exceeded |
| M0004AF9F | Wastegate 2 | Bus off | Bus shut down |
| M0004AFA0 | Wastegate 2 | Mechanical | Broken spring |
| M0004AFA1 | Wastegate 2 | Mechanical | Damaged gear |
| M0004AFA2 | Wastegate 2 | Hardware | Hardware fault |
| M0004AFA3 | Wastegate 2 | Sensor | Position sensor failure |
| M0004AFA5 | Wastegate 2 | Calibration | Calibration fault |
| M0004AFA6 | Wastegate 2 | Adaptation | Lower stop learning fault |
| M0004AFA7 | Wastegate 2 | Power supply | Incorrect voltage detected |
| M0004AFA8 | Wastegate 2 | Adaptation | Upper stop learning fault |
| M0004AFA9 | Wastegate 2 | Sensor | Loss of zero point |
Fault Codes: Injection System (Injectors 1-5)
| Fault code | Area | Type | Cause description |
|---|---|---|---|
| M0004B000 | Injector 1 | Electrical | Open circuit / short to ground |
| M0004B001 | Injector 1 | Electrical | Open circuit / short to power |
| M0004B002 | Injector 1 | Hardware | Output driver failure |
| M0004B003 | Injector 1 | Deviation | Negative current deviation |
| M0004B004 | Injector 1 | Deviation | Positive current deviation |
| M0004B005 | Injector 1 | Current | Quiescent current too high |
| M0004B006 | Injector 1 | Current | Operating current too low |
| M0004B007 | Injector 1 | Current | Operating current too high |
| M0004B008 | Injector 1 | Overcurrent | Low Side |
| M0004B009 | Injector 1 | Overcurrent | High Side |
| M0004B00A | Injector 1 | PWM | PWM limit reached |
| M0004B064 | Injector 2 | Electrical | Open circuit / short to ground |
| M0004B065 | Injector 2 | Electrical | Open circuit / short to power |
| M0004B066 | Injector 2 | Hardware | Hardware fault |
| M0004B067 | Injector 2 | Deviation | Negative current deviation |
| M0004B068 | Injector 2 | Deviation | Positive current deviation |
| M0004B069 | Injector 2 | Current | Quiescent current too high |
| M0004B06A | Injector 2 | Current | Operating current too low |
| M0004B06B | Injector 2 | Current | Operating current too high |
| M0004B06C | Injector 2 | Overcurrent | Low Side |
| M0004B06D | Injector 2 | Overcurrent | High Side |
| M0004B06E | Injector 2 | PWM | PWM limit reached |
| M0004B0C8 | Injector 3 | Electrical | Open circuit / short to ground |
| M0004B0C9 | Injector 3 | Electrical | Open circuit / short to power |
| M0004B0CA | Injector 3 | Hardware | Hardware fault |
| M0004B0CB | Injector 3 | Deviation | Negative current deviation |
| M0004B0CC | Injector 3 | Deviation | Positive current deviation |
| M0004B0CD | Injector 3 | Current | Quiescent current too high |
| M0004B0CE | Injector 3 | Current | Operating current too low |
| M0004B0CF | Injector 3 | Current | Operating current too high |
| M0004B0D0 | Injector 3 | Overcurrent | Low Side |
| M0004B0D1 | Injector 3 | Overcurrent | High Side |
| M0004B0D2 | Injector 3 | PWM | PWM limit reached |
| M0004B12C | Injector 4 | Electrical | Open circuit / short to ground |
| M0004B12D | Injector 4 | Electrical | Open circuit / short to power |
| M0004B12E | Injector 4 | Hardware | Hardware fault |
| M0004B12F | Injector 4 | Deviation | Negative current deviation |
| M0004B130 | Injector 4 | Deviation | Positive current deviation |
| M0004B131 | Injector 4 | Current | Quiescent current too high |
| M0004B132 | Injector 4 | Current | Operating current too low |
| M0004B133 | Injector 4 | Current | Operating current too high |
| M0004B134 | Injector 4 | Overcurrent | Low Side |
| M0004B135 | Injector 4 | Overcurrent | High Side |
| M0004B136 | Injector 4 | PWM | PWM limit reached |
| M0004B190 | Injector 5 | Electrical | Open circuit / short to ground |
| M0004B191 | Injector 5 | Electrical | Open circuit / short to power |
| M0004B192 | Injector 5 | Hardware | Hardware fault |
| M0004B193 | Injector 5 | Deviation | Negative current deviation |
| M0004B194 | Injector 5 | Deviation | Positive current deviation |
| M0004B195 | Injector 5 | Current | Quiescent current too high |
| M0004B196 | Injector 5 | Current | Operating current too low |
| M0004B197 | Injector 5 | Current | Operating current too high |
| M0004B198 | Injector 5 | Overcurrent | Low Side |
| M0004B199 | Injector 5 | Overcurrent | High Side |
| M0004B19A | Injector 5 | PWM | PWM limit reached |
