Suzuki Fault Code

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Code 14 / P0115

Floods on Hot Restart / Fast Idle Sticks

System

Cooling / Thermal

Symptom

Floods on Hot Restart / Fast Idle Sticks

Diagnosis & fix steps

LOGIC: Engine Coolant Temperature (ECT) Sensor Signal High / Open. ACTION: Access thermostat housing under bed access hatch. Disconnect 2-pin ECT sensor. Test thermistor resistance (spec: ~2.0k–3.0kΩ at 20°C, drops to ~300Ω hot); verify 5V reference wire from ECU.

Red Seal field insights

Hot-Restart Flooding: When the ECT thermistor circuit goes open, the ECU assumes extreme sub-zero coolant (-40°C), triggering cold enrichment fuel injection on a heat-soaked motor.

Same code keeps coming back?

That's a program problem, not a part problem. Book a 30-minute uptime review with Grant, a Red Seal Heavy Duty Technician.

Book an uptime review

Read before you touch anything

  • This is general reference information, not a repair manual. It is for trained, qualified technicians.
  • Fault codes, meanings and procedures vary by model, serial number and software version. Confirm the code and the procedure against the manufacturer's service manual before acting.
  • Follow the OEM service manual, torque specs and your site's safety procedures: lockout/tagout, block raised equipment, relieve hydraulic, fuel and air pressure, and let hot systems cool.
  • You use this information at your own risk. Adventure Mechanical and AM Fleet Integrity accept no liability for damage, injury, downtime or loss arising from its use.
  • Not affiliated with or endorsed by any manufacturer. Brand names are used only to identify the equipment a code applies to.

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