What is the P0150 fault code What is the O2 Sensor Circuit Malfunction(Bank 2 Sensor 1) description? How do you fix the P0150 fault code What are the causes and symptoms of the P0150 fault?
What is the P0150 Fault code? What does it signify?
Check engine lights that come on due to O2 sensor malfunctions are the most common cause. A P0150 error code means that there is an issue with the O2 sensor circuit. Based on the oxygen content of the exhaust, the O2 sensor generates an O2 signal. The O2 sensor voltage signal is monitored continuously by the PCM while the engine runs in closed loop. This information allows the PCM to determine the amount of fuel to inject. The P0150 fault code will trigger if the voltage signal coming in from the sensor stays below 0.4 Volt for longer than 20 seconds, depending on the model. “Bank 2”, in the code description, indicates the engine row without cylinder 1; “Sensor 1”, indicates the upstream oxygen sensor (closest of the engine) that precedes the catalytic converter.
The O2 sensor voltage signal can range from 0.1 to 9 Volts. A value between 0.1 and 0.9 signifies that the engine’s voltage signal is low. This means that there is too much fuel in the mixture. A value greater than 0.9 indicates that it is running well.
Modern cars are equipped with a heated oxide sensor (HO2S), instead of a regular one. The heating part of the sensor allows for the sensor to reach operating temperatures faster. The engine can therefore enter the closed loop faster. The sensor is made up of four wires. Two wires supply the PCM with an aggregate circuit as well as a 0.5-volt reference voltage signal. The two remaining wires serve as the ground and supply wiring to the heater component.
What is the Cause of P0150 Fault code?
Here are some reasons why P0150 should be set.
- – Defective O2 sensor (Bank 2 Sensor 1)
- – Leakage of the exhaust system
- – Leakage of air at the intake inlet
- – Frayed, torn or rusty cables and connectors
- – Open or Short in Wiring to PCM
- – Exhaust Vents located around O2 sensor
- – Engine vacuum leaks
- – Contact with exhaust via O2 sensor cables
- – If possible, blow fuses
- – Oily and extremely dirty O2 sensor
- PCMs are rarely defective
What are the symptoms for the P0150 Fault code?
You may experience the following symptoms if your vehicle has a P0150 Code:
- – Illumination at the check engine lights
- – Increased fuel use
- – The engine can be difficult to start and stop.
- – Fluctuations at idle speed
- – Open loop means that the engine runs extremely rich. Exhaust may emit black smoke.
- – The engine might hesitate during acceleration if it is under poor conditions
- Spark plugs could become stained and cause engine misfires.
How to Fix the P0150 Fault Code
There are several repairs that can resolve the P0150 fault code.
- Repair of oxygen sensor wiring that is damaged, shorted or exposed
- – Repairing intake air intake leaks
- – Repair of engine vacuum leaks
- Repairing or replacing the exhaust, if necessary
- – Repair of cables that touch exhaust components
- – Correcting blown fuses, if applicable
- – Clean the O2 sensor that is heavily stained
- – Replacing faulty O2 sensor (Bank 2 sensor 1)
