What is P0331 fault code? What is the Knock Sensor 2 circuit range/performance (Bank 2) failure description? How do you fix the P0331 fault code What are the symptoms and causes for the P0331 fault code
What is the P0331 fault code? What does it signify?
Knock sensors can detect misfires and vibrations in cylinders, and report them to powertrain control modules (PCM). It usually has two wires. One wire sends the 5 volt reference signal to the PCM and the other transmits vibrations from motor to PCM. The PCM can detect minor vibrations during normal engine operation. To prevent this from happening, it delays the ignition timing. If the knock is severe or the signal from the sensor exceeds the range of the PCM, then a P0331 fault code could be triggered.
The code description states that “Bank 2” refers to a knock on an engine bank that does NOT include the engine’s #1 Cylinder. The knock sensor (Sensor 2) in this bank must be checked.
P0331 fault codes can be found on vehicles made by many manufacturers, including Hyundai, Nissan and Land Rover, Dodge, Honda, Land Rovers, Land Rovers, Land Rovers, Dodge, Audi, Volvos, Mazda, GMCs, Peugeot, Volkswagen, and Kia.
What are the Possible Causes for the P0331 Fault code?
Here are some reasons why P0331 should be set.
- – Defective knock sensor (Bank 2 Sensor 2)
- – Damaged wires to knock sensor or loose connectors, open, or shorted issues
- – Use fuel with an incorrect octane rating
- – Any problems with the cooling system
- – Defective EGR system (Exhaust Gas Recirculation)
- – Defective PCM (rarely)
What are the symptoms of P0331 Fault code?
The following symptoms may be experienced by a vehicle that has the code “P0331”:
- – Illumination for check engine light
- – Knocking sounds coming from engine
- – Engine makes a whining sound during acceleration
- – Bad engine performance (lack or hesitation).
- – Increased fuel use
- – Engine temperature increased under normal operating conditions
How do I fix the P0331 fault code?
Your mechanic should inspect the engine and listen to it while diagnosing the problem. If the engine runs smoothly, there should be no vibrations or knocks. This is an indication that the sensor is working correctly. The sensor should not need to be replaced. Instead, the problem should be identified and fixed. If there is no knock or vibration in the motor, the sensor should not be replaced.
The following repairs may be able to resolve the P0331 fault code:
- Ensure that the engine is using fuel with the correct octane rating.
- – Testing knock sensor resistance
- – Replace frayed or broken wires or connectors in the sensor circuit
- – Make sure that the circuit and sensor are grounded properly
- – Replacing knock sensor
- – Check for faults in the EGR/cooling system
- – Cleaning carbon deposits from engine pistons
- Repairing spark plugs that are not working properly
- – Repair or replacement worn piston bearings
- – You can replace or reprogram your PCM (rarely)
How serious is the P0331 Fault code?
A knocking engine could leave you on the sidelines. 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.
