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Bobcat · Fuel

Bobcat code M0921: Fuel level sensor out of range high

What it means

The fuel level sender's signal is above its valid range, so the controller can't read the fuel level. This is a sensor or wiring fault, not a fuel problem.

Can I keep running?

Keep going carefully, fix soon

Usually, if the machine runs normally: finish the job carefully and fix it soon. Stop if the machine derates, overheats, loses power or the code comes with an alarm.

Check first

  1. Park on level ground, lower the lift arms and attachment to the ground, stop the engine and remove the key.
  2. Check the fuel level by eye so you don't run out while the gauge is unreliable.
  3. Inspect the fuel sender connector and wiring for corrosion, damage or a loose plug.
  4. Restart and see if the code comes back. If it does, stop and call your Bobcat dealer.

Likely causes

  • Unplugged or corroded fuel sender connector
  • Broken or damaged wire in the sender circuit
  • Failed fuel level sender

The fix

Repairing the wiring or connector, or replacing the sender, fixes it. Until then, check fuel by eye at every fill.

Different code on your screen? Snap the display and Mechy reads it.

Related fuel codes

All Bobcat codes

Questions

What does Bobcat code M0921 mean?

Fuel level sensor out of range high. The fuel level sender's signal is above its valid range, so the controller can't read the fuel level. This is a sensor or wiring fault, not a fuel problem.

Can I keep running with M0921?

Usually, if the machine runs normally: finish the job carefully and fix it soon. Stop if the machine derates, overheats, loses power or the code comes with an alarm.

How do I fix Bobcat code M0921?

Repairing the wiring or connector, or replacing the sender, fixes it. Until then, check fuel by eye at every fill.

Sources

  1. Bobcat Company, Diagnostic Service Codes list (fault codes PDF, 2020)
  2. Bobcat T450 Operation & Maintenance Manual 7250077 (2018), Diagnostic Service Codes
  3. BigRentz, Full List of Bobcat Fault Codes (searchable table)

Code meanings vary by model, serial range and software. Confirm with your operator's manual or Bobcat dealer before replacing parts.

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