Engine-Codes
 
OBDII Code List
 
P1031 INFINITI

P1031 INFINITI - Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What does this mean?

P1031 INFINITI Possible Causes

  • Faulty Air Fuel Ratio Sensor 1 Bank 1
  • Air Fuel Ratio Sensor 1 harness is open or shorted
  • Air Fuel Ratio Sensor 1 circuit poor electrical connection

How do I fix code P1031 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.

P1031 INFINITI Tech Notes

There is a factory service bulletin for the following Infiniti models:

2004-2005 Infiniti FX35
2004-2005 Infiniti FX45
2004-2005 Infiniti G35 Sedan
2004-2005 Infiniti G35 Sedan
Infiniti Factory Service Bulletin OBDII Code P1031

The bulletin suggests reprogramming the Engine Control Module (ECM) first before replacing any parts.

Cost of diagnosing the P1031 INFINITI code

    Labor: 1.0

    The cost of diagnosing the P1031 INFINITI code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the P1031 INFINITI code detected?

The current amperage in the heated air fuel ratio (A/F) sensor 1 heater circuit is out of the normal range. An excessively low voltage signal is sent to Engine Control Module (ECM) through the heated air fuel ratio (A/F) sensor 1 heater.

P1031 INFINITI Possible Symptoms

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

P1031 INFINITI Meaning

The Engine Control Module (ECM) performs ON/OFF duty control of the Air Fuel Ratio (A/F) sensor 1 heater corresponding to the engine operating condition to keep the temperature of A/F sensor 1 element at the specified range.
OBDII Code P1031 INFINITI - Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1 - Engine-Codes.com

P1031 INFINITI More Information

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P1031 INFINITI Information for specific Infiniti models

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