Infiniti G37 2009-2013 Emissions & Sensors Specifications

The emissions sensors for the 2009-2013 Infiniti G37 are specifically designed for this model and may not be compatible with other vehicles. These sensors are calibrated to meet the emissions standards and engine specifications of the G37. Always verify compatibility using the vehicle's VIN or consult the manufacturer's parts catalog before purchasing or installing sensors for other models.

Emissions sensors in the Infiniti G37 require minimal maintenance but should be inspected during routine service intervals. Check for signs of wear, corrosion, or damage, and ensure the sensor connections are secure. Replace the sensors if they fail or trigger a check engine light. Regular engine tune-ups and using high-quality fuel can help prolong the sensors' lifespan and maintain optimal performance.

To replace the emissions sensors, first, locate the faulty sensor (upstream or downstream of the catalytic converter). Disconnect the negative battery terminal, then unplug the sensor's electrical connector. Use an oxygen sensor socket to remove the old sensor. Install the new sensor by threading it in by hand to avoid cross-threading, then tighten it to the specified torque. Reconnect the electrical connector and battery terminal. Clear any error codes using an OBD-II scanner.

If the emissions sensor triggers a check engine light, use an OBD-II scanner to retrieve the error code. Common codes include P0135 (sensor heater circuit malfunction) or P0420 (catalytic converter efficiency below threshold). Inspect the sensor for damage, check wiring for fraying or disconnection, and ensure the sensor is properly seated. If the issue persists, replace the sensor and clear the codes. If the problem continues, consult a professional mechanic.

To optimize emissions sensor performance, ensure your engine is running efficiently by performing regular maintenance, such as replacing spark plugs, air filters, and fuel injectors. Use high-quality fuel to reduce contaminants that can affect sensor readings. Avoid short trips that prevent the engine from reaching optimal operating temperature, as this can lead to inaccurate sensor readings. Regularly inspect and clean sensor connections to ensure proper functionality.