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P2196 2002 TOYOTA COROLLA

P2196 2002 TOYOTA COROLLA - Oxygen Air/Fuel Sensor Signal Stuck Rich Bank 1 Sensor 1

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

P2196 2002 TOYOTA COROLLA Possible Causes

  • Faulty Oxygen Air/Fuel Sensor Bank 1 Sensor 1
  • Oxygen Air/Fuel Sensor Bank 1 Sensor 1 harness is open or shorted
  • Oxygen Air/Fuel Sensor Bank 1 Sensor 1 circuit poor electrical connection
  • Faulty EFI Relay
  • Faulty Injector
  • Faulty Engine Control Module (ECM)

First diagnose P2196 2002 TOYOTA COROLLA 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 P2196 2002 TOYOTA COROLLA code

    Labor: 1.0

    The cost of diagnosing the P2196 2002 TOYOTA COROLLA 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 P2196 2002 TOYOTA COROLLA code detected?

P2196 indicate a malfunction related to bank 1 of the A/F sensor circuit.

P2196 2002 TOYOTA COROLLA Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Excessive Fuel Consumption

P2196 2002 TOYOTA COROLLA Meaning

The Air-Fuel ratio (A/F) sensor provides output voltage approximately equal to the existing air-fuel ratio.

The A/F sensor output voltage is used to provide feedback for the Engine Control Module (ECM) to control the air-fuel ratio.

With the A/F sensor output, the ECM can determine deviation from the stoichiometric air-fuel ratio and control proper injection time. If the A/F sensor is malfunctioning, the ECM is unable to accurately control air-fuel ratio.

The A/F sensor is equipped with a heater which heats the zirconia element. The heater is also controlled by the ECM. When the intake air volume is low (the temperature of the exhaust gas is low), current flows to the heater which heats the sensor to facilitate detection of accurate oxygen concentration.

The A/F sensor is a planar type. Compared to a conventional type, the sensor and heater portions are narrower. Because the heat of the heater is conducted through the alumina to zirconia (of the sensor portion), sensor activation is accelerated.

OBDII Code P2196 2002 TOYOTA COROLLA - Oxygen Air/Fuel Sensor Signal Stuck Rich Bank 1 Sensor 1 - Engine-Codes.com

P2196 2002 TOYOTA COROLLA More Information

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