Kubota Fault Code

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P3008 / E:078

Hard Crank / Engine Misfires / Limp Mode

System

Timing / Cam

Symptom

Hard Crank / Engine Misfires / Limp Mode

Diagnosis & fix steps

LOGIC: Camshaft Position Sensor (CMP) Phase Angle Drift / Loss of Signal. ACTION: Disconnect CMP sensor on upper timing cover. Clean magnetic iron sludge from sensor face. Measure internal coil resistance (~950–1,250Ω) and inspect 3-wire harness for chafing against the alternator mounting bracket.

Red Seal field insights

Vibration Fretting: Heavy four-cylinder diesel harmonics shake the CMP pigtail connector; loose terminal pin tension causes intermittent phase signal drops during sudden throttle snaps.

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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