Suzuki Fault Code

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P0605

Engine Won't Rev Past 2000 RPM / CEL Solid

System

Engine Control

Symptom

Engine Won't Rev Past 2000 RPM / CEL Solid

Diagnosis & fix steps

LOGIC: Internal Engine Control Module (ECM) ROM/RAM Checksum Error. ACTION: Inspect ECM wiring ground studs on cylinder head and firewall. Open ECM aluminum casing to inspect for ruptured electrolytic capacitors or corrosive battery acid migration on circuit traces.

Red Seal field insights

Leaking ECU Capacitors: 1990s and early 2000s Mitsubishi/Denso ECUs mounted under the dash suffer from dried or leaking electrolytic capacitors, eating through copper PCB ground traces.

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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