No, not always.
No, only the faulty one, the fault code will tell you which is faulty.
All sensors give a code when the sensor is not working right
Code P0420 on a Nissan Armada indicates a problem with the catalytic converter's efficiency. To fix it, start by inspecting the exhaust system for leaks, ensuring that all connections are secure. Next, check the oxygen sensors for proper operation, as faulty sensors can trigger this code. If both the exhaust and sensors are in good condition, the catalytic converter may need to be replaced.
it could be that one or all of your sensors are faulty, it could be the abs relay is faulty or it could be the abs pump that is faulty ( or it could also be a fuse )
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Don't worry about it those screens are all faulty & blink coolant temp sensor.
p0105 MAF sensor circuit p0130 02 Circuit malfunction bank 1 Sensor 1 p0150 02 Circuit malfunction bank 2 sensor 1 p1445 not a generic code need vehicle info to gues All these codes are faulty Circuit codes. So more likly a bad wire, fuse or computer than all the sensors. Looking at the list I am going to make a guesses starting from most to least likely: 1stThere is a problem with a damaged or broken wiring harnes at the computer. Get a wiring diagram and prove the wiring is good on all the wires to all the sensors on the list The ECM that runs all this stuff is bad.. Prove the sensors are not bad before replacing an expensive computer. Next: All these sensors are faulty, crash or used parts or vandalized?
If the light is flashing there is no resetting it. One or more of the pressure sensors has failed. Replace the faulty sensor, set the correct tire pressure on all 4 tires. Take it for a short drive and the light will reset itself. If the sensors are 4-5 years old the batteries are probably dead or going to die soon. Replace all the sensors and be done with it.
Electronic Control unit. it gathers info from all the engine sensors. When your engine light is on, you can plug a code reader into a port under your steering wheel to get error codes and find the problem. Common in all today's cars.
If the same code returned you need to check for causes for a lean condition. ie: low fuel pressure, improper airflow, misfire, faulty sensor,...... If a different code, diagnose it.
Get a manual on your car and it will show you all of them and acquaint you with your car.
It's code for oxygen sensor. On V6 I think it's called A/F sensor. You need Oxygen/A/F sensors in case of V6 all of them. There are some cases when all sensors would die.