What is P0333 fault code? What is the Knock Sensor 2 Circuit High Input Bank 2 malfunction? How can you fix the P0333 fault? What are the causes and symptoms of the P0333 error code?
What is the P0333 Fault code? What does it signify?
If the powertrain controller module (PCM), detects a voltage signal above 4.5V from the knocksensor 2 circuit, and it exceeds the parameters set by the manufacturer, the code P0333 is issued. This code is usually set if there is a 10% deviation. “Bank 2” In the code’s description, refers to an engine bank that doesn’t contain the engine’s #1 cylinder. “Sensor 2” It indicates an issue with the second sensor for vehicles that have multiple knock sensors.
The knock sensor alerts the PCM when there are misfires and explosions. It usually has two wires. The reference voltage is 5 volts from PCM. The other sensor sends a voltage signal back to the PCM. The PCM detects knocking and delays the ignition timing, protecting the engine from premature ignition.
The P0333 fault code can affect vehicles of all makes and models, including but not limited to: Toyota, Audi, Volvos, Seat, Lexusus, Ford, Subaru. Jaguar. Volkswagen. Nissan. Infiniti. Skoda.
What causes the P0333 Fault code?
Below are some reasons to set fault code P0333:
- – Bank 2 – Defective knock sensor 2 (Bank 2)
- – A fault with the knock sensor 2 circuit, or its connectors
- – The sensor’s wires are damaged, frayed, or melted.
- – Engine mechanical issues
- – Use of low-octane gasoline
- – Incorrect air-fuel mixture
- – Low fuel pressure
- – Defective PCM
What are the symptoms for P0333 Fault Codes?
You may experience the following symptoms if your vehicle has the code P0333:
- – Illumination at the check engine lights
- – Low engine performance
- – Insufficient power for acceleration
- – Engine makes knocking sounds
- – Engine ringing or whining sound during acceleration
- – Uneven engine speed (RPM)
- – Increased fuel use
How to Fix the P0333 Fault Code
The following repairs may be able to resolve the P0333 fault code:
- – Test the knock sensor 2 resistance
- – Replace frayed or broken wires and connectors within the sensor circuit
- Ensure that both the circuit and sensor have proper grounding
- – Replacing knock sensor
- – Engine mechanical problems can be repaired
- – Reprogramme or replace the PCM (rare).
How Serious Is the P0333 Fault Code
Although a P0333 code is not necessarily causing driveability issues, it is vital to have it checked as soon as possible. Engine knock can have a serious impact on the engine’s ability run efficiently and cleanly. The PCM can’t get the right information from the knock sensor if it isn’t working properly. This could cause engine problems such as overheating, fuel efficiency reduction, or other issues. You should fix a P0333 fault immediately to avoid further damage to the vehicle.
