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 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE
Overall Function Check
WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
Use this procedure to check the overall function of the A/F sensor 1 circuit.
With GST
- Start engine and warm it up to normal operating temperature.
- Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in the suitable gear position.
- Set D position, then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH).NOTE: Never apply brake during releasing the accelerator pedal.
- Repeat steps 2 to 3 five times.
- Stop the vehicle and turn ignition switch OFF.
- Wait at least 10 seconds and restart engine.
- Repeat steps 2 to 3 five times.
- Stop the vehicle and connect GST to the vehicle.
- Make sure that no DTC is displayed.
If the DTC is displayed, go to "DIAGNOSTIC PROCEDURE ".
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.