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.
2012 Mazda Mazdaspeed3 L4-2.3L TurboFACTORY OEM SERVICE PROCEDURE
Fuel Pressure Sensor: Testing and Inspection
FUEL PRESSURE SENSOR INSPECTION [MZR 2.3 DISI Turbo]
PID Inspection
NOTE:
- If the fuel pressure sensor is removed, do not reuse the fuel pressure sensor and the fuel delivery pipe. When you replace the fuel pressure sensor, replace a new fuel delivery pipe with a new fuel pressure sensor.
1. Connect the M-MDS to the DLC-2.
2. Switch the ignition to ON.
3. Warm up the engine to normal operating temperature.
4. Access the FUEL_PRES PID using the M-MDS. On-Board Diagnostic Test
5. Verify that the FUEL_PRES PID is at the standard value under the following conditions.
- If not as verified, replace the fuel delivery pipe. Service and Repair
6. Reconnect the spill valve control solenoid valve connector.
7. Clear the DTC using the M-MDS. On-Board Diagnostic Test
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.