Mercedes-Benz C220564
"There is an internal fault in the steering angle sensor. There is an implausible signal." In the quick test, there are also no other DTC's in other control units that point to or
Quick answer
Mercedes-Benz DTC C220564 is documented as an implausible signal/internal fault in the steering angle sensor. Verified bulletin evidence states that, when no other control-unit DTCs point to the N80 Steering Column Control Module (SCCM), there is no effect on other components or vehicle functions and no instrument-cluster warning lamp is caused.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does C220564 mean?
Mercedes-Benz DTC C220564 is documented as an implausible signal/internal fault in the steering angle sensor. Verified bulletin evidence states that, when no other control-unit DTCs point to the N80 Steering Column Control Module (SCCM), there is no effect on other components or vehicle functions and no instrument-cluster warning lamp is caused.
2. Technical explanation
The verified Mercedes-Benz bulletin description for C220564 is: “There is an internal fault in the steering angle sensor. There is an implausible signal.” The bulletin context specifically concerns a quick test in which there are no additional DTCs in other control units that point to or reference the N80 Steering Column Control Module (SCCM). Under that documented condition, the bulletin states that the stored DTC has no effect on other vehicle components or functions and does not cause an instrument-cluster light.
3. What system is affected?
Steering angle sensor; N80 Steering Column Control Module (SCCM) is referenced in the verified bulletin context.
4. How serious is this code?
Not yet established by verified evidence. The official bulletin states that, under its specified condition of no related DTCs in other control units referencing the SCCM, there is no effect on other components or vehicle functions.
5. Symptoms you may notice
- A stored C220564 DTC may be found during a quick test.
- Under the bulletin’s specified condition, the DTC does not cause an instrument-cluster light.
- Under the bulletin’s specified condition, there is no effect on other components or vehicle functions.
6. Possible causes
- The verified diagnostic description identifies an internal fault in the steering angle sensor and an implausible signal.
- Further root cause is not yet established by verified evidence.
7. Can I still drive the vehicle?
Not yet established by verified evidence. The verified bulletin states that, when no other control-unit DTCs point to or reference the N80 SCCM, there is no effect on vehicle functions.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Have the vehicle quick-tested with appropriate diagnostic equipment.
- Confirm whether any additional DTCs in other control units point to or reference the N80 Steering Column Control Module (SCCM).
- Use a Mercedes-Benz service provider for diagnosis if the code is accompanied by other faults or vehicle-function concerns.
10. Step-by-step troubleshooting
- Perform a quick test and check for other DTCs in other control units that point to or reference the N80 SCCM.
- If the bulletin’s stated condition is met—C220564 is stored and there are no other DTCs pointing to or referencing the SCCM—the official bulletin states that no other vehicle functions are affected.
- Additional diagnostic steps are not established by the supplied verified evidence.
11. When to contact service
Contact a Mercedes-Benz service provider if other DTCs reference the N80 SCCM or if any vehicle-function concern is present. Service urgency is not otherwise established by verified evidence.
12. What the service center may check
- Run a quick test.
- Review other control units for DTCs that point to or reference the N80 Steering Column Control Module (SCCM).
- Confirm whether the bulletin condition of no related SCCM-referencing DTCs is present.
13. Possible repair or resolution
- A specific repair procedure or resolution is not established by the supplied verified evidence.
- The official bulletin states that, under its specified no-related-DTC condition, C220564 has no effect on other vehicle functions and does not cause an instrument-cluster light.
14. Affected vehicles
- Mercedes-Benz CLA-Class · 2022–2026 · US
- Mercedes-Benz EQS · 2022–2026 · US
15. Related TSBs / service bulletins
- Mercedes-Benz LI82.90-P-080159, NHTSA Manufacturer Communication 11029091, published February 28, 2026. It addresses stored DTC C220564 and states that when no other control-unit DTCs point to or reference the N80 SCCM, there is no effect on other components or vehicle functions and no instrument-cluster light is caused.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official source: NHTSA Manufacturer Communication 11029091, Mercedes-Benz LI82.90-P-080159. https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2025-2026.zip#nhtsa_id=11029091
19. Frequently asked questions
What does Mercedes-Benz code C220564 mean?
Verified bulletin evidence describes it as an internal fault in the steering angle sensor with an implausible signal.
Does C220564 turn on an instrument-cluster warning light?
The official bulletin states that it does not cause an instrument-cluster light when there are no other DTCs in other control units that point to or reference the N80 SCCM.
Does C220564 affect other vehicle functions?
Under the condition specified in the official bulletin—no other control-unit DTCs pointing to or referencing the N80 SCCM—the bulletin states there is no effect on other components or vehicle functions.
Which vehicles are covered by the supplied applicability evidence?
Mercedes-Benz CLA-Class model years 2022–2026 and Mercedes-Benz EQS model years 2022–2026, US region.