The Mercedes Atego HSP unit is a critical component of your vehicle’s hydraulic system. It is responsible for controlling the power steering, the lifting and tilting functions of the cab, and the hydraulic suspension system. However, like any other electronic system, it can develop faults that affect its performance. These faults often appear as error codes on the dashboard, making it difficult to pinpoint the problem.
If you’re experiencing problems with your Mercedes Atego HSP unit, the first step is to identify the fault codes displayed on the dashboard. Once you’ve identified the codes, it becomes easier to diagnose and fix the underlying issue. In this guide, we’ll explore some common fault codes, their symptoms, causes, and solutions.
One of the most common fault codes in the Mercedes Atego HSP unit is C1026. This code indicates a problem with the hydraulic pump. Symptoms of this fault include a drop in the hydraulic pressure, difficulty operating the lifting or tilting functions, or noisy operation. The main cause of this issue is a faulty hydraulic pump, which needs to be replaced.
Another common fault code is C101C, which points to a malfunction in the hydraulic valve block. This code usually occurs when there is a problem with the valve block’s solenoids, causing a loss of control over the hydraulic system. Possible causes of this issue include damaged wiring, a failing solenoid, or an electrical fault.
If you notice a C1000 fault code, it means there is a general fault in the HSP unit’s control module. This code often appears alongside other specific fault codes, indicating a problem with the control module itself. In this case, you’ll need to take your Mercedes Atego to an experienced technician for diagnostics and repairs.
In conclusion, troubleshooting fault codes in the Mercedes Atego HSP unit requires some technical knowledge and expertise. However, by understanding common issues, symptoms, causes, and solutions, you can identify and fix problems quickly and efficiently. If you’re not confident in your ability to troubleshoot and repair your vehicle, it’s always best to seek professional help from a qualified technician.
| ERROR CODES | EXAPTATION |
|---|---|
| HSP 0160 | Functional failure of the CAN data bus |
| HSP 0161 | CAN bus: communication broken |
| HSP 0162 | CAN connection to the FR control unit is broken. |
| HSP 0163 | CAN connection to the INS control unit is broken. |
| HSP 0164 | CAN connection to the MR control unit is broken. |
| HSP 1012 | Internal fault in HPS control unit (hydropneumatic actuation) |
| HSP 1013 | Internal fault in HPS control unit (hydropneumatic actuation) |
| HSP 1101 | Voltage too high at terminal 30 |
| HSP 1102 | Voltage too low at terminal 30 |
| HSP 1301 | Voltage too high at terminal 15 |
| HSP 1302 | Undervoltage at terminal 15 |
| HSP 2005 | The power supply of the pressure sensors is faulty as a result of an open circuit or a short to ground, or the signal wire is faulty has an open circuit. |
| HSP 2006 | The power supply or signal wire of the pressure sensors is faulty as a result of a short to positive. |
| HSP 3003 | The control wires or the common ground wire of the solenoid valves are faulty due to an open circuit. |
| HSP 3006 | The control wires or the common ground wire of the solenoid valves are faulty due to a short to positive. |
| HSP 3104 | Control wires to solenoid valves are faulty due to a short to ground. |
| HSP 3204 | The common ground wire of the solenoid valves is faulty due to a short to ground. |
