P0031 2008 TOYOTA CAMRY - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 1

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3

P0031 2008 TOYOTA CAMRY Causes

  • Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1
  • Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 harness is open shorted to ground
  • Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection
  • Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit fuse
  • Faulty Engine Control Module (ECM)
  • P0031 2008 TOYOTA CAMRY Notes

    There is a factory service bulletin for the following Toyota Models:


    2008 Toyota Camry
    2008 Toyota Camry Service Bulletin OBDII Code P0031

    First diagnose P0031 2008 TOYOTA CAMRY code

      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 terminals.

    Cost of diagnosing the P0031 2008 TOYOTA CAMRY code

      Labor: 1.0

      The cost of diagnosing the P0031 2008 TOYOTA CAMRY 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.

    P0031 2008 TOYOTA CAMRY Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • P0031 2008 TOYOTA CAMRY More Information

    Need more information on how to fix the P0031 2008 TOYOTA CAMRY code?
    Get Access to Factory Service Manuals

    P0031 2008 TOYOTA CAMRY Description

    Air-Fuel Ratio (A/F)sensor need to reach a minimum operating temperature of 1200 degrees F to produce an accurate voltage signal. The faster the air-fuel ratio sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).

    In order to achieve the require temperature, a heater element is included inside the air-fuel ratio sensor. The ECM controls the air-fuel ratio sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.

    The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.