Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Infiniti M45FACTORY OEM SERVICE PROCEDURE
6. Detect Malfunctioning Part
Check the following:
- Fuel pump and circuit (Refer to DTC P1220: FUEL PUMP CONTROL MODULE (FPCM) and FUEL PUMP CIRCUIT .)
- Fuel pressure regulator (Refer to FUEL PRESSURE CHECK . )
- Fuel lines (Refer to CHECKING FUEL LINES ).
- Fuel filter for clogging
- : Repair or replace.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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