Nissan 3-Pin Waterproof Oxygen Sensor Connector – OEM 22690-9F601 | Male & Female

The OEM 22690-9F601 is a 3-pin waterproof connector used in Nissan oxygen (O2) sensor and air-fuel ratio (AFR) sensor harnesses. This connector serves the O2 sensor signal and heater circuits on Nissan and Infiniti platforms. Available in Male and Female variants, bare or with 15cm pre-wired leads.

Key Specifications

O2 Sensor Connector Pin Functions

A 3-pin O2 sensor connector on Nissan platforms typically serves: heater power (+12V), heater ground, and sensor signal. The heater circuit brings the sensor to operating temperature quickly for accurate lambda measurement; the signal circuit transmits the oxygen voltage to the ECU. A corroded connector on either circuit causes heater faults (P0030, P0036) or signal faults (P0130–P0167).

Why O2 Sensor Connectors Fail

Oxygen sensor connectors are mounted in the exhaust system environment, exposed to extreme heat, road spray, and vibration. Terminal corrosion or housing melting from exhaust heat causes intermittent O2 sensor signals, rich/lean fuel trim faults, and increased fuel consumption. Replacing the connector restores clean heater and signal circuit continuity.

Variant Guide

• Female / Female 15CM – Socket-side connector, bare or pre-wired
• Male / Male 15CM – Plug-side connector, bare or pre-wired

Installation Steps

1. Allow the exhaust system to cool completely before working near O2 sensors
2. Locate the O2 sensor connector in the exhaust harness
3. Disconnect the original connector and inspect terminals for heat damage
4. Transfer terminals to the new housing or splice in the pre-wired variant
5. Reconnect and clear O2 sensor fault codes with Nissan CONSULT
6. Run a drive cycle to confirm sensor readiness

Frequently Asked Questions

Q: What Nissan models use OEM 22690-9F601?
A: This connector is used on Nissan Altima, Maxima, Sentra, X-Trail, Rogue, and Infiniti Q50/Q60 O2 sensor harnesses. Cross-reference your vehicle’s wiring diagram to confirm fitment.

Q: What fault codes indicate a failed O2 sensor connector?
A: Common codes include P0030/P0036 (O2 sensor heater circuit), P0130–P0167 (O2 sensor circuit range/performance), and P0420/P0430 (catalyst efficiency) on Nissan CONSULT diagnostic systems.

Q: Are terminals included?
A: Yes, terminals are included with all variants.

Compatible Applications

• Nissan Altima / Maxima – O2 sensor harness
• Nissan Sentra / Rogue / X-Trail – Air-fuel ratio sensor connector
• Infiniti Q50 / Q60 – Lambda sensor wiring