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P2196 2002 Toyota Highlander Code - Oxygen Air/Fuel Sensor Signal Stuck Rich Bank 1 Sensor 1

- Code Popularity: 2,819 Views
- Repair Importance Level: 2/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P2196 2002 Toyota Highlander?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other 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)
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How to Fix the DTC P2196 2002 Toyota Highlander?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for P2196 2002 Toyota Highlander Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2196 2002 Toyota Highlander code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

When is the Code Detected?

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

What are Code Possible Symptoms?

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

Code P2196 2002 Toyota Highlander Description

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 Highlander - Oxygen Air/Fuel Sensor Signal Stuck Rich Bank 1 Sensor 1 - AutoCodes.com
P2196 2002 Toyota Highlander Code - Oxygen Air/Fuel Sensor Signal Stuck Rich Bank 1 Sensor 1

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