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.
2000 Infiniti G20 Base, Automatic, RE4F03BFACTORY OEM SERVICE PROCEDURE
Engine Controls - Sensor Operating Range Charts: Introduction
NOTE:
For sensor operating range charts on I30, refer to Maxima in Nissan SENSOR OPERATING RANGE CHARTS article. For sensor operating range charts on QX4, refer to Pathfinder in
Nissan SENSOR OPERATING RANGE CHARTS article.
Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it may cause driveability problems.
NOTE:
For sensors not listed, see appropriate DTC test in appropriate SELF-DIAGNOSTICS article.
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.