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Bobcat · Drive

Bobcat code M1607: Traction lock solenoid open circuit

What it means

On M-Series loaders, the controller sees an open circuit in the traction lock (parking brake) hold solenoid. Bobcat excavators use this number for a different fault, so check your machine type.

Can I keep running?

Stop: fix before running

No. Stop the machine safely (bucket or attachment down, engine off) and find the cause before you run it again.

Check first

  1. Park on level ground, lower the lift arms and attachment to the ground, stop the engine and remove the key.
  2. Leave the parking brake engaged and don't try to move the machine.
  3. Inspect the traction lock connector and wiring you can see for damage.
  4. Restart and see if the code comes back. If it does, stop and call your Bobcat dealer.
  5. Do not bypass or modify the seat bar, BICS interlocks or parking brake to keep working.

Likely causes

  • Unplugged or corroded solenoid connector
  • Broken wire
  • Failed solenoid coil

The fix

Repairing the wiring or replacing the coil fixes it. The parking brake may not hold or release correctly, so have a dealer fix it before you operate.

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

Related drive codes

All Bobcat codes

Questions

What does Bobcat code M1607 mean?

Traction lock solenoid open circuit. On M-Series loaders, the controller sees an open circuit in the traction lock (parking brake) hold solenoid. Bobcat excavators use this number for a different fault, so check your machine type.

Can I keep running with M1607?

No. Stop the machine safely (bucket or attachment down, engine off) and find the cause before you run it again.

How do I fix Bobcat code M1607?

Repairing the wiring or replacing the coil fixes it. The parking brake may not hold or release correctly, so have a dealer fix it before you operate.

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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