AutoCodes - OBDII Code List - P0150 INFINITI

P0150 INFINITI - Air Fuel Ratio Circuit Bank 2 Sensor 1

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3    What is this?
Table of contents

P0150 INFINITI Possible Causes

  • Faulty Air fuel ratio (A/F) sensor bank 2 sensor 1
  • Air fuel ratio (A/F) sensor bank 2 sensor 1 harness is open or shorted
  • Air fuel ratio (A/F) sensor bank 2 sensor 1 circuit poor electrical connection
  • Inappropriate fuel pressure
  • Faulty fuel injectors
  • Intake air leaks may be faulty
  • Exhaust gas leaks

How do I fix code P0150 INFINITI?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
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Tech Notes

Replacing the Air fuel ratio (A/F) sensor bank 2 sensor 1 usually takes care of the problem.

For Infiniti models before 2005 see: P0150 Infiniti

Cost of diagnosing the P0150 INFINITI code

Labor: 1.0

The cost of diagnosing the P0150 INFINITI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected?

The Air Fuel Ratio (A/F) signal computed by Engine Control Module (ECM) from the A/F sensor 1 signal is constantly in the range other than approx. 1.5V.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • High Fuel Consumption
  • Excessive Smoke from Exhaust

P0150 INFINITI Description

The Air Fuel Ratio (A/F) sensor is a planar dual-cell limit current sensor. The sensor element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, 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 range (0.7 < λ < air).
The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance. An electronic circuit controls the pump current through the oxygen pump cell so that the composition of the exhaust gas in the diffusion gap remains constant at λ = 1. Therefore, the A/F sensor is able to indicate air/fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 - 800°C (1,292 - 1,472°F).
OBDII Code P0150 Infiniti - Air Fuel Ratio Circuit Bank 2 Sensor 1 - AutoCodes.com

More Information

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