EL
ErrorLib
Brands
||
  1. Home
  2. ABB
  3. System
  4. E3-46
About·Privacy·Terms

ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

E3-46

Boot Project Load Failed (Insufficient License)

ABB · System

What does E3-46 mean?

The CPU was unable to load the boot project because it detected insufficient licensing for the application. This prevents the application from starting and running, indicating a licensing issue rather than a hardware fault. The PLC may enter demo or stop mode, rendering it inoperable for licensed features.

Common Causes

  • Application project utilizes licensed features (e.g., advanced motion, specific communication protocols) for which the CPU does not have the required license key installed.
  • License key on the CPU's non-volatile memory is corrupted, expired, or improperly activated.
  • Downloading a project configured for a higher-tier CPU (with more licensed features) onto a lower-tier, unlicensed CPU.
  • License file not properly transferred or activated after a CPU replacement or firmware update procedure.
  • Incorrect license file associated with the specific project or CPU hardware serial number.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    1. Connect to the CPU with programming software and verify currently installed license keys (e.g., using the 'License Manager' utility).

  2. 2

    2. Compare the licenses required by the project (as listed in project properties) with the licenses installed on the CPU.

  3. 3

    3. Obtain the correct license file from the vendor's licensing portal or your distributor.

  4. 4

    4. Install the missing or correct license key onto the CPU using the vendor's specified licensing tool or procedure.

  5. 5

    5. If licensed features are not strictly required, remove them from the project and re-download the modified project without the features.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

E11-18CPU Parameter Not FoundE11-19CPU Unable to Read Parameter ValueE2-11PLC Startup Type Scaling Failed
Source: ABB System
View Official PDFSearch more codes in this manual