61.c4.d3 | Error

The code is rarely a single fault. In most service manuals, 61.c4.d3 breaks down as:

Together, the error typically appears as:

Before jumping into fixes, identify the root cause. The error can appear for several reasons: 61.c4.d3 error

Title: Decoding the 61.c4.d3 Error – Causes & Fixes

Posted by: TechSupport_Jon
Board: Industrial Electronics / Legacy Display Systems The code is rarely a single fault

I’ve been seeing a few threads about the 61.c4.d3 error code pop up on older LCD controllers (especially in some 2000s-era Siemens, Bosch, or off-brand industrial HMI panels). Wanted to consolidate what we’ve found.

The error often sticks because of a stuck print job in memory. Together, the error typically appears as: Before jumping

Does the error reappear immediately without any network cable connected? If yes, move to Step 2. If the error only appears after you send a job, the problem is likely a specific file or driver.

HP regularly releases firmware updates to fix bugs. If you recently updated the firmware (or never updated it), a version mismatch between the formatter and the engine controller can cause this error.

Contact HP Professional Support if:

Be ready to provide the error log: Setup → Reports → Error Log.