HelpForCars.net- All Aobut Automotive Repairs
HelpForCars.net- All Aobut Automotive Repairs

P2196

P2196 - Oxygen Sensor Signal Biased/Stuck Rich - Bank 1 Sensor 1

Possible causes
- Faulty Front Heated Oxygen Sensor Bank 1
- Front Heated Oxygen Sensor Bank 1 harness is open or shorted
- Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Vacuums leaks
What does this mean? What does this mean?
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
P2196 Description

The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. A heated oxygen sensor (HO2S) indicating rich at the end of a test is trying to correct for an

over-lean condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.

Need A Repair Shop?
Find local automotive repair shops in your area.
Home - Privacy Policy - Terms and Conditions - Copyright 2010-2016 Helpforcars.net
AutoCodes.com - HelpForCars.net - Infinitihelp.com - Nissanhelp.com