P2196 2009 TOYOTA PRIUS - Oxygen Air/Fuel Sensor Signal Stuck Rich Bank 1 Sensor 1
P2196 2009 TOYOTA PRIUS 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 2009 TOYOTA PRIUS 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 2009 TOYOTA PRIUS code
Labor: 1.0The cost of diagnosing the P2196 2009 TOYOTA PRIUS 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 P2196 2009 TOYOTA PRIUS code detected?P2196 indicate a malfunction related to bank 1 of the A/F sensor circuit.
P2196 2009 TOYOTA PRIUS Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
P2196 2009 Toyota Prius DescriptionThe 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.
P2196 2009 TOYOTA PRIUS More InformationNeed more information on how to fix the P2196 2009 TOYOTA PRIUS code?
Get Access to Factory Service Manuals
Need more help?Get the P2196 2009 Toyota Prius code diagnosed by a professional: Find a repair shop in your area
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