200011E9 — Diagnostic services failure
Philips CT error code, reported by the Diagnostics / built-in test.
What 200011E9 means
On CT systems, status code 200011E9 indicates: Diagnostic services failure. The code originates in the Diagnostics / built-in test section of the Diagnostics / built-in test. Severity level alarm (Diagnostics unavailable).
Reported action: Restart and retry the diagnostic tool. While this code is present the built-in tests themselves are suspect, so do not treat a passing or failing self-test result as trustworthy — clear the diagnostic services fault first, or escalate with the log, before diagnosing anything else from test results..
From the Philips ultrasound service reference "Error Logger Overview" (New Error Logger), archived under Philips ultrasound End-of-Life service documentation. The source lists this Errno as "Diagnostic services failure" — the system's own diagnostic services failed. A full log entry combines a 4-digit Subsystem code with the Errno (format ssss-eeeeeeee); the same table lists 0104 Feature-Diags among the subsystems.
Full troubleshooting for 200011E9
The complete diagnosis, cause tree, and step-by-step remedy for the Diagnostics / built-in test subsystem are documented in the FSELIB Activion16 (TSX-031A) service manual — re-authored, web-first, with real figures.
Open the Activion16 service manualRelated Diagnostics / built-in test codes
Source: Philips Ultrasound (End of Life) — 10_Error Logger Overview, Reference documentation. Reference information re-authored by FSELIB — not a copy of the OEM manual.