OBDII Code List

P2096 INFINITI - Post Catalytic Fuel Trim System Too Lean 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)

P2096 Infiniti 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.

Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this

electrode layer of current. In addition, a heater is integrated in the

sensor to ensure the required operating temperature of approximately

800°C (1,472°F).

OBDII Code P2096 Infiniti - Post Catalytic Fuel Trim System Too Lean Bank 1  -

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