Standard Ignition AS161 fuel tank pressure sensor for the 1997-2003 Nissan Pathfinder and other vehicles measures fuel tank pressure and sends the reading to the engine computer.
A failing fuel tank pressure sensor can show up as a check engine light or an evaporative emission code. Before you replace the sensor, rule out a loose fuel cap and damaged wiring or a damaged connector, since either can set a similar code.
This sensor is an OE replacement for the 1997-2003 Nissan Pathfinder and the 1998-1999 Nissan Altima.
Fit and size
Build and materials
One fuel tank pressure sensor with its mounting bracket. This listing holds one sensor, and the vehicle takes one. Mounting hardware, O-rings and the wiring harness are not included, so plan on new hardware and O-rings.
Is the Standard Ignition AS161 right for a 1997-2003 Nissan Pathfinder?
Yes. The Standard Ignition AS161 fuel tank pressure sensor fits the 1997-2003 Nissan Pathfinder, and the vehicle takes one sensor.
Will the AS161 fuel tank pressure sensor fit a 1998-1999 Nissan Altima?
Yes. This sensor is listed for the 1998-1999 Nissan Altima, and the car takes one.
What comes with the Standard Ignition AS161 sensor?
The Standard Ignition AS161 comes with the sensor and its mounting bracket. Mounting hardware, O-rings and a wiring harness are not included.
What kind of connector does this fuel tank pressure sensor have?
This sensor has one rectangular female plug-in connector with three male blade terminals. It also has one vacuum port, and the wiring harness is not included.
Does a check engine light mean this fuel tank pressure sensor has failed?
It can, but a check engine light has other causes too. A shop can read the stored codes and test the sensor.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
