Description
The OX902 Oxygen Sensor is listed as a replacement option for selected Infiniti G37 S Premium V36 vehicles associated with the GCBV36 and CAV36 model codes, covering the listed 2013 model year and a 3.7-litre V6 24-valve engine configuration. The oxygen sensor is an important component of the engine management and exhaust emissions control systems. It monitors oxygen levels in the exhaust gases and sends information to the engine control unit (ECU), helping the system regulate the air-fuel mixture and manage emissions.
The Infiniti G37 is known for its powerful V6 engine, responsive performance and premium driving experience. To maintain the intended operation of its engine, the vehicle relies on accurate information from electronic sensors throughout the fuel, ignition and exhaust systems. A correctly specified oxygen sensor helps the ECU evaluate exhaust conditions and make appropriate adjustments where required.
The OX902 product code provides a convenient reference for customers searching for a replacement oxygen sensor. However, the correct component may vary according to the vehicle’s production details, market specification, exhaust layout and sensor position. Always verify the original equipment part number and exact application before ordering.
Key Product Features
- Product Code: OX902
- Product Type: Oxygen Sensor
- Vehicle Make: Infiniti
- Vehicle Model: G37 S Premium
- Listed Model Series: V36
- Listed Model Codes: GCBV36–CAV36
- Listed Model Year: 2013
- Listed Engine Capacity: 3.7 litres
- Listed Engine Configuration: V6
- Listed Valve Configuration: 24 valves
- Primary Function: Exhaust oxygen monitoring and engine management feedback
- Replacement Purpose: Replacing a worn or faulty sensor when the replacement specification matches the original component
These details reflect the supplied product listing and should not be treated as confirmation that OX902 fits every Infiniti G37 variant. Confirm the specific vehicle and sensor location before purchasing.
What Does an Oxygen Sensor Do?
An oxygen sensor measures the amount of oxygen remaining in the exhaust gases after combustion. This information helps the ECU evaluate the air-fuel mixture and adjust fuel delivery where applicable. The ECU also uses information from other sensors to coordinate engine operation under different driving conditions.
Maintaining the correct air-fuel ratio supports efficient combustion, consistent engine performance and emissions control. If the oxygen sensor becomes slow to respond or provides inaccurate readings, the ECU may not receive reliable information about exhaust conditions. This can affect fuel management and may trigger a check-engine warning light.
Many V6 petrol vehicles use multiple oxygen sensors. Upstream sensors are generally positioned before the catalytic converters and commonly contribute to air-fuel mixture control. Downstream sensors are usually positioned after the catalytic converters and help monitor their performance. The sensors can have different electrical and functional specifications, so the correct position must be identified before replacement.
Because the Infiniti G37 uses a V6 engine, the exhaust layout may include sensors associated with different cylinder banks. The exact sensor required depends on the vehicle’s original configuration and the diagnostic findings.
Common Symptoms of a Faulty Oxygen Sensor
Oxygen sensors are exposed to high exhaust temperatures, vibration and contaminants. Over time, the sensing element, heater circuit, connector or wiring may deteriorate.
Possible symptoms of a faulty oxygen sensor include:
- An illuminated check-engine warning light.
- Reduced fuel economy under certain driving conditions.
- Increased exhaust emissions.
- Hesitation or inconsistent engine response.
- Changes in idle quality in some circumstances.
- Diagnostic trouble codes related to oxygen sensor performance.
- Fault codes associated with the sensor heater circuit.
- Difficulty passing an emissions inspection where applicable.
These symptoms can also be caused by other problems, including exhaust leaks, ignition faults, intake air leaks, fuel delivery issues, damaged wiring or catalytic converter deterioration. A diagnostic scan and appropriate testing should be completed before replacing the sensor.
Benefits of a Correctly Matched Replacement Sensor
Selecting a replacement oxygen sensor with the correct specifications helps support the intended operation of the Infiniti G37’s engine management system.
- Reliable exhaust feedback: A functioning sensor provides oxygen-related information to the ECU, helping it evaluate combustion and exhaust conditions.
- Support for fuel control: Where the sensor is used for air-fuel mixture feedback, accurate readings help the ECU make appropriate adjustments.
- Emissions-system support: The sensor contributes to the intended operation of the vehicle’s exhaust monitoring and emissions control systems.
- Potential resolution of sensor-related fault codes: Replacing a confirmed faulty sensor may resolve related codes when the sensor itself is the cause.
- Support for consistent engine operation: Correct sensor feedback helps the engine management system respond appropriately to changing driving conditions.
- Practical maintenance: Replacing a worn or damaged sensor can help restore the intended exhaust monitoring function.
A replacement oxygen sensor does not automatically increase engine power or guarantee improved fuel economy. Results depend on the original fault, correct installation and the condition of the engine and exhaust systems.
Compatibility Checks for Infiniti G37 V36
Before ordering OX902, confirm that the sensor matches the specific vehicle. Model name, engine capacity and year alone may not identify the exact component.
Check the following details:
- Vehicle identification number (VIN) and production date.
- Exact engine code and vehicle variant.
- Original equipment oxygen sensor part number, if available.
- Required sensor position and cylinder bank.
- Whether the sensor is upstream or downstream of the catalytic converter.
- Electrical connector shape and pin arrangement.
- Cable length, thread size and sensor body design.
- Heater-circuit and electrical specifications.
- Market-specific emissions equipment and exhaust configuration.
The listing identifies a 3.7-litre V6 24-valve application for 2013. Verify this information using the vehicle documentation or a reliable parts catalogue. If possible, compare the original sensor’s part number and connector with the replacement specifications before purchasing.
Installation Recommendations
Oxygen sensor replacement involves working near the exhaust system, which can become extremely hot. Allow the exhaust to cool completely before beginning work.
- Scan the vehicle for diagnostic trouble codes and record the results.
- Identify the faulty sensor, its cylinder bank and its exact position.
- Switch off the engine and follow the manufacturer’s safety procedures.
- Disconnect the electrical connector carefully to avoid damaging the wiring or locking tabs.
- Remove the old sensor using a suitable oxygen sensor socket or removal tool.
- Compare the old sensor with OX902, checking the connector, cable length, threads and physical design.
- Install the replacement according to the manufacturer’s instructions and specified torque.
- Follow the sensor manufacturer’s guidance on thread treatment; do not apply additional anti-seize compound unless permitted.
- Route the wiring away from hot exhaust components and moving parts.
- Reconnect the sensor and verify operation using a suitable diagnostic scan tool.
If the sensor is seized, access is difficult or the fault diagnosis is uncertain, professional installation is recommended.
Maintenance and Troubleshooting
Regular servicing can help identify exhaust leaks, damaged wiring and engine faults that may affect oxygen sensor readings. If the check-engine light returns after replacement, retrieve the diagnostic codes again and investigate the underlying cause.
A technician may check sensor response, heater-circuit operation, wiring continuity, exhaust leaks and related engine management components. Accurate diagnosis helps avoid unnecessary parts replacement and supports dependable vehicle operation.
Conclusion
The OX902 Oxygen Sensor is listed for selected Infiniti G37 S Premium V36 applications for the 2013 model year, with a listed 3.7-litre V6 24-valve engine configuration. A correctly matched sensor supports exhaust monitoring, engine management feedback and emissions-system operation.
Before ordering, confirm the VIN, original part number, sensor position, cylinder bank and electrical connector. Careful fitment checks and correct installation help ensure that the replacement is suitable for the vehicle and performs as intended.
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