Bobcat C1403 (14-03) Fault Code: Fuel Shutoff Pull Solenoid Error Off
Also shown on the panel as 14-03
Fuel Shutoff Pull Solenoid Error Off · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
C1403 (panel code 14-03) means the Bobcat display controller sent a start command but never saw voltage return on the fuel pull feedback wire 8120. The fuel shutoff pull coil did not confirm energizing, so the engine will not start. This affects the E35, E42, E45, and E55 excavators.
Critical severity. The engine will not start with this code active, so the machine is down until it's fixed. It's not a safety-damage-in-minutes issue, but it stops work completely and points to a wiring or solenoid fault that needs to be run down before the engine can be cranked again.
What does Bobcat error code C1403 mean?
C1403 is set by the display controller when it commands an engine start but does not detect voltage feedback on wire 8120. The fuel shutoff pull coil is supposed to get a brief high-current pulse from the fuel pull relay the instant a start command is given. That pulse pulls the fuel shutoff solenoid open so fuel can flow and the engine can run.
If the controller doesn't see the feedback signal confirming that pull coil activation, it assumes the fuel shutoff circuit isn't working correctly and will not let the engine start. In plain terms: the machine's computer is trying to open the fuel shutoff valve but never gets confirmation it happened, so it plays it safe and blocks the start.
This is purely an electrical feedback and control circuit issue tied to the fuel shutoff solenoid system, not a fuel quality or injection problem.
What triggers a Bobcat C1403 code?
The code sets when the key switch is in run/enter and the engine is being cranked, and the controller does not see voltage on feedback wire 8120 during that start command.
Common causes of C1403
- Blown fuse 8
- Open ground wire 2010/2030
- Supply wire 1350 shorted to ground or open
- Fuel pull coil signal wire 8100 shorted to ground
- Fuel pull relay signal wire 8110 shorted to ground or open
- Fuel pull feedback wire 8120 open
- Faulty fuel shutoff relay
- Faulty fuel shutoff solenoid
- Faulty display controller
- Moisture, corrosion, or pushed-back pins in the mainframe or engine harness connectors
- Intermittent fault: loose connections, corrosion, pushed-back pins, the controller, or the wire harness, alone or in combination, if the code is not active at the time of testing
How to troubleshoot Bobcat C1403: first checks
- Check fuse 8 first since a blown fuse is the simplest cause and quick to verify.
- Inspect connectors at the mainframe and engine harness for moisture, corrosion, or pushed-back pins, this is listed as a common root cause.
- Verify ground wire 2010/2030 has continuity and is not open.
- Check supply wire 1350 for a short to ground or an open circuit.
- Check fuel pull coil signal wire 8100 for a short to ground.
- Check fuel pull relay signal wire 8110 for a short to ground or an open.
- Check fuel pull feedback wire 8120 for an open circuit, this is the wire the controller monitors for the code.
- Test the fuel shutoff relay and the fuel shutoff solenoid for correct operation.
- If the code is not currently active, treat it as intermittent and focus on connector condition, since the cause may not be immediately findable.
How the code clears
Clearing this code requires cycling power on the machine. If the underlying wiring, relay, or solenoid fault is still present, the code will return the next time an engine start is attempted.
Affected models and serial ranges
C1403 appears in our records across 4 Bobcat models. Match your machine by model and serial number.
| Model | Serial ranges |
|---|---|
| E35 | SN A93K110001-99999, SN AC2P11001-99999 |
| E42 | SN AG3411001-99999 |
| E45 | SN AG3G11001-99999, SN AHHC11001-99999 |
| E55 | SN ARWM11001-99999, SN ASW311001-99999 |
Frequently asked questions
What does Bobcat code C1403 mean?
It means the display controller commanded an engine start but never detected voltage feedback on wire 8120 from the fuel shutoff pull coil circuit. Because that confirmation is missing, the engine is prevented from starting.
Will my Bobcat start with C1403 active?
No. The engine will not start when this code is present, since the controller could not confirm the fuel shutoff solenoid's pull coil energized correctly.
What's the panel display code for C1403?
On the display panel it shows as 14-03.
Which Bobcat models can get C1403?
This code is listed for the E35, E42, E45, and E55 excavators.
What's the first thing to check for C1403?
Start with fuse 8 and inspect the mainframe and engine harness connectors for moisture, corrosion, or pushed-back pins. These are quick checks before moving into wire-by-wire testing of circuits 8100, 8110, 8120, 1350, and the grounds.
How do you clear code C1403 after fixing it?
Cycle power on the machine. No separate clearing step is listed beyond a power cycle, but the code will come back on the next start attempt if the underlying fault hasn't been repaired.
Can C1403 be an intermittent problem?
Yes. If the code isn't active during testing, the cause may not be found right away. Likely intermittent causes include loose connections, corrosion, pushed-back pins, the wire harness, or the controller itself.