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Error 26:1:Medium Severity

Order of Ink Supplies incorrect

Last updated: February 22, 2026

Severity:Medium Severity
Affected:0 models
DIY Fix:Possible
System error code: 86:01 on HP T790 T1300 T2300 Designjet Printer

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System error code: 86:01 on HP T790 T1300 T2300 Designjet Printer

System error code: 86:01 on HP T790 T1300 T2300 Designjet Printer See this video: https://youtu.be/Lhb-g4gKpKE Carriage ...

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What This Error Means

Order of Ink Supplies incorrect

Step-by-Step Troubleshooting Guide
  1. 1

    Remove ink supply cartridges and check they are correct, check for latest firmware

Technical Service Diagrams

Reference diagrams for common repair procedures related to this error:

Ink System Components & Flow Path

HP DesignJet Ink System Components Diagram

Note: These diagrams are for reference only. Always consult official HP service documentation and follow proper ESD precautions.

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