OBDII Code List

P2097 NISSAN - Post Catalytic Fuel Trim System Too Rich Bank 1

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Air Fuel Ratio (A/F) Sensor Bank 1 Sensor 1
  • Air Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 harness is open or shorted
  • Air Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection
  • Fuel pressure
  • Fuel injector
  • Intake air leaks
  • Exhaust leaks

When is the code detected?

The output voltage computed by ECM from the A/F sensor 1 signal is shifts to the lean side for a specified period.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P2097 Nissan Description

The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor. The sensor element of the A/F sensor 1 is composed an electrode layer, which transports ions. It has a heater in the element. The sensor is capable of precise measurement λ= 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide λ range. The exhaust gas components diffuse through the diffusion layer at the sensor cell. An electrode layer is applied voltage, and this current relative oxygen density in lean. Also this current relative hydrocarbon density in rich.
OBDII Code P2097 Nissan - Post Catalytic Fuel Trim System Too Rich Bank 1  -

P2097 Nissan Information for specific Nissan models

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