Toyota Fault Code

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P1415 / P1416

Hard starting in heat; Loss of power.

System

Fuel

Symptom

Hard starting in heat; Loss of power.

Diagnosis & fix steps

Suction Control Valve (SCV) Circuit. LOGIC: High-pressure pump cannot regulate fuel flow correctly. ACTION: Perform "Fuel Leak" and "SCV Test" via Techstream. FIX: Replace Suction Control Valve (SCV).

Red Seal field insights

In the GCC, "Summer Grade" diesel and high tank temperatures can cause the SCV to stick. Replacing the "Short" SCV with the "Long" updated version is the standard Red-Seal fix.

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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