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Error 0x00C20002Critical Severity

Carriage Error: Carriage System Failure

Last updated: February 16, 2026

Severity:Critical Severity
Affected:20 models
DIY Fix:Professional Recommended
How to troubleshoot carriage jams in the HP DesignJet T850/T858/T870/T950/XT950/T918 printer series

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How to troubleshoot carriage jams in the HP DesignJet T850/T858/T870/T950/XT950/T918 printer series

Learn how to troubleshoot carriage jams in the HP DesignJet T850 / T858 / T870 / T950 / XT950 / T918 printer series. Chapters: ...

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What This Error Means

This is a general critical error indicating a failure within the entire carriage system. The carriage cannot move or operate correctly.

Common Causes
  • 1Faulty carriage motor preventing movement along the scan axis.
  • 2Damaged or worn carriage belt, leading to slippage or complete detachment.
  • 3Encoder strip is dirty, scratched, or detached, causing the carriage to lose positional awareness.
  • 4Obstruction in the carriage path (e.g., paper jam, foreign object) physically blocking movement.
  • 5Defective trailing cable or main PCA, failing to transmit power or control signals to the carriage assembly.
Symptoms to Watch For
  • Printer displays error code 0x00C20002 on the front panel.
  • Carriage remains stationary or attempts to move but makes grinding/stalling noises.
  • Carriage moves erratically or only a short distance before stopping.
  • Printer fails to initialize or complete the start-up sequence.
  • Visible signs of damage to the encoder strip (e.g., tears, smudges) or carriage belt (e.g., fraying, looseness).
Step-by-Step Troubleshooting Guide
  1. 1

    Turn off the printer and unplug it. 2. Open the top cover and gently try to move the carriage manually. 3. Inspect the carriage path, encoder strip, and drive belt for obstructions or damage. 4. Plug in and restart the printer. If the error persists, service is required.

Pro Tips from Experts

This is a broad error. Start with the simplest checks: encoder strip cleanliness and carriage freedom of movement. Don't overlook the service station's role in carriage movement. A failing scan-axis motor can often produce grinding noises.

Technical Service Diagrams

Reference diagrams for common repair procedures related to this error:

Carriage Belt Replacement

HP DesignJet Carriage Belt Replacement Diagram

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

Still Having Issues?

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Printers Affected by This Error (20)

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