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GO ERROR

Casio Casio Calculator

Severity: Minor

Source: OnlyErrorCodes.com — Every error code. One place.

Casio Calculator GO ERROR — What It Means

What Does This Error Mean?

Casio GO ERROR means a Goto instruction in a program is trying to jump to a label number (Lbl) that does not exist in the program. Check the program for a missing Lbl command that matches the Goto destination. On Casio scientific calculators, labels are single digits 0–9 and letters A–Z.

Affected Models

  • Casio fx-991EX / CW
  • Casio fx-9750GIII
  • Casio fx-CG50
  • Casio fx-9860GII
  • Casio fx-5800P

Common Causes

  • Goto N references a label Lbl N that was accidentally deleted from the program
  • Typo in the label number — Goto 3 when the label is Lbl 4
  • Program was partially entered and the label line was not yet added
  • Program copied from another source with a different label scheme
  • Goto outside a loop does not have a corresponding Lbl

How to Fix It

  1. Open the program and find all Goto statements.

    Press MENU → Program → select the program → F2 (Edit). Scroll through the program and note every Goto command and its target label number. Write down each one.

  2. Find all Lbl (Label) commands in the program.

    While in the program editor, look for every Lbl command and its number. Compare the list of Goto destinations against the list of Lbl definitions. Any Goto with no matching Lbl causes the GO ERROR.

  3. Add the missing Lbl or correct the typo.

    Move the cursor to the correct position in the program where the label should be. Press SHIFT → PRGM → 3: Jump → Lbl, then enter the label number. Alternatively, correct the Goto number to match an existing Lbl.

  4. Test the program after editing.

    Press EXE to run the program. If the GO ERROR has been resolved, the program will execute. Trace through the logic to ensure all branches (If/Then/Else, loops with Goto) have matching labels.

Frequently Asked Questions

How many labels can I use in a Casio program?

Casio calculators support labels Lbl 0–9 (digits) and Lbl A–Z (letters). The letter labels are accessed via the ALPHA key in program mode. This gives up to 36 unique labels per program.

Is GO ERROR the same as GOTO ERROR on a Casio?

Yes — GO ERROR is the display abbreviation for a GoTo/Label mismatch error on Casio calculators. The full meaning is a Goto instruction could not find its target label.