Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2011 Mercedes Benz CL65FACTORY OEM SERVICE PROCEDURE
Fuel Controls DTCS (FSCU6)
FUEL CONTROL DTCS (FSCU6)
| Module | MB DTC | Description |
|---|---|---|
| FSCU6 | 008700 | This fault can be ignored and erased. |
| FSCU6 | 045111 | This fault can be ignored and erased. |
| FSCU6 | 045112 | This fault can be ignored and erased. |
| FSCU6 | 045113 | This fault can be ignored and erased. |
| FSCU6 | 062700 | The output for the fuel pump has an electrical fault or open circuit. |
| FSCU6 | 06271E | The output for the fuel pump has an electrical fault or open circuit. The resistance value is outside the permissible range. |
| FSCU6 | 062800 | The fuel pump has a short circuit to ground. |
| FSCU6 | 062A19 | The fuel pump has a malfunction. |
| FSCU6 | 062A64 | The fuel pump has a malfunction. There is an implausible signal. |
| FSCU6 | 162A04 | Control unit 'Fuel pump' has a malfunction. |
| FSCU6 | 162A55 | Control unit 'Fuel pump' has a malfunction. The component is not configured. |
| FSCU6 | 162A98 | Control unit 'Fuel pump' has a malfunction. The component or the system has overtemperature. |
| FSCU6 | 228E00 | This fault can be ignored and erased. |
| FSCU6 | 228F00 | This fault can be ignored and erased. |
| FSCU6 | 253912 | The pressure sensor of the low-pressure fuel circuit has a malfunction. There is a short circuit to positive. |
| FSCU6 | 253914 | The pressure sensor of the low-pressure fuel circuit has a malfunction. There is a short circuit to ground or an open circuit. |
| FSCU6 | 253931 | The pressure sensor of the low-pressure fuel circuit has a malfunction. Signal not present |
| FSCU6 | 253964 | The pressure sensor of the low-pressure fuel circuit has a malfunction. There is an implausible signal. |
| FSCU6 | A10064 | Circuit 15 has a malfunction. There is an implausible signal. |
| FSCU6 | A10C16 | The power supply is outside the valid range. |
| FSCU6 | A10C17 | The power supply is outside the valid range. |
| FSCU6 | A1C711 | This fault can be ignored and erased. |
| FSCU6 | A1C712 | This fault can be ignored and erased. |
| FSCU6 | A1CB11 | This fault can be ignored and erased. |
| FSCU6 | A1CB12 | This fault can be ignored and erased. |
| FSCU6 | EA10A00 | The power supply in the system is too low. |
| FSCU6 | EA10B00 | The power supply in the system is too high. |
| FSCU6 | EC00188 | Drive train CAN communication has a malfunction. Bus OFF |
| FSCU6 | EC10029 | Communication with control unit 'combustion engine' has a malfunction. There is an invalid signal. |
| FSCU6 | EC10064 | Communication with control unit 'combustion engine' has a malfunction. There is an implausible signal. |
| FSCU6 | EC10087 | Communication with control unit 'combustion engine' has a malfunction. The message is missing. |
| FSCU6 | EC11187 | Communication with control unit 'Battery' has a malfunction. The message is missing. |
| FSCU6 | EC15587 | Communication with the instrument cluster has a malfunction. The message is missing. |
| FSCU6 | EC16887 | Communication with the electronic ignition lock has a malfunction. The message is missing. |
| FSCU6 | EC40100 | Implausible data were received from control unit 'combustion engine'. |
| FSCU6 | EC42700 | Implausible data were received from the electronic ignition lock. |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.