P0146 - Heated Oxygen Sensor (HO2S)
Circuit Insufficient Activity Bank 1 Sensor 3
P0146 code definition
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)
What the P0146 code implies
P0146 is the OBD-II conventional code demonstrating the O2 sensor for bank 1 sensor 3 neglects to have a voltage change from between 410-490 mV for over 74 seconds.
What causes the P0146 code?
The O2 sensor for bank 1 sensor 3 doesn't react to the fuel cutoff or fuel enhancement by the Engine Control Module (ECM) for over 74 seconds showing no reaction to improvement.
The O2 sensor and mass wind current sensor examination is confounded by the ECM.
The mass wind stream sensor isn't demonstrating wind stream accurately because of pollution or an inadequate sensor.
What are the manifestations of the P0146 code?
The Check Engine Light will come on demonstrating an issue.
There might be no drive side effects since the sensor isn't utilized as a contribution for the motor's fuel/air proportion.
In the event that the issue isn't secluded to simply this code and different codes are recovered, then, at that point drive side effects would be for that code and not P0146.
How does a repairman analyze the P0146 code?
Sweeps codes and archive freeze outline information
Screens the O2 sensor information to check whether the voltage is moving above or under 410-490 mV
Screens the mass wind current sensor information for reactions to choke changes per details
Follows the maker's particular pinpoint tests for additional finding of the code
Normal mix-ups when diagnosing the P0146 code
Follow these basic rules to forestall botches:
Try not to expect the O2 sensor is terrible by supplanting a decent part; do a total pinpoint test.
Check the mass wind current sensor for appropriate activity and pollutions from earth, oil and garbage from a compromised air channel or an oil shower type channel.
How genuine is the P0146 code?
This code can be because of issues with the mass wind current sensor, which is expected to compute the legitimate measure of air entering the motor. Alongside the O2 sensors, the disappointment of any of these segments will make the ECM misjudge the air going into the motor.
The ECM lets completely go or misunderstands the contribution from sensors like the mass wind current sensor or the O2 sensor in case they are inside determination, however wrong.
The O2 sensor without help from anyone else won't cause a drive indication, yet will cause a disappointment during a discharges test.
What fixes can fix the P0146 code?
Supplanting the O2 sensor in the event that it doesn't react
Testing the mass wind stream sensor for the appropriate readings per details when the motor is making excellent progress so far
Supplanting the O2 sensor or mass wind stream sensor whenever defiled or bombs tests
Wiping out the mass wind current sensor to check whether readings change
Separating the O2 sensor to check whether the voltage goes to zero to check the wiring to the sensor
Extra remarks for thought with respect to the P0146 code