Trouble Code P0332: Knock Sensor 2 Circuit Low Input (Bank 2)

P0332 Knock Sensor

Trouble Code P0332 Knock Sensor 2 Circuit Low Input (Bank 2): The internal combustion engine uses a knock sensor to detect any possible knocking in the cylinders. Knocking is basically an air and fuel mixture in a cylinder that explodes in an abnormal way.

Whenever you have an abnormal explosion in the cylinder, it means the combustion did not generate enough power to satisfy the acceleration demands placed on the engine. If this continues for too long, it could end up causing permanent damage to the engine.

The initial symptoms you’ll notice include weak acceleration, engine hesitation, excessive engine heat, engine pinging, higher emissions, and engine speed fluctuation. There are all problems that you shouldn’t leave unchecked because they could impact the drivability and fuel economy of your vehicle. As you notice the symptoms, the first thing you should do is run a diagnostic scan on the engine control unit.

The scanning tool might give you the trouble code P0332. That translates to “Knock Sensor 2 Circuit Low Input (Bank 2).” When the engine pings, the knock sensor transmits a signal to the engine control unit. But if the signal is too low, the engine control unit won’t receive an accurate signal. The engine control unit can detect the problem with the signal. That is how it comes up with trouble code P0332.

The cause of the problem may be attributed to one of several different things. Some of the possible causes include a bad knock sensor, bad exhaust gas recirculation system, cooling system issue, lean air to fuel ratio, or a problem with the knock sensor circuit connectors or the circuit itself. You won’t know which one of these are the causes until you have a mechanic inspect your vehicle and pinpoint the root cause themselves.

The repair costs will vary, depending on the cause that is identified. You may need a new knock sensor, connectors, wires, or cooling system. In some cases, you may have to get your engine control unit reprogrammed if it is experiencing a glitch or malfunction. But that would be a rare circumstance, so don’t worry too much about that. The wires or connectors are likely going to be the cause of the problem.

FAQs

What is trouble code P0332?

The P0332 fault code stands for “Knock Sensor 2 Circuit Low Input (Bank 2).” It’s a warning sign that the knock sensor on cylinder 2 is malfunctioning.

What is the function of the knock sensor?

The engine knock or explosion can be detected using the knock sensor. In the event of pre-ignition or knocking, the engine control module (ECM) receives a signal to retard the spark.

Where does “Bank 2” fit into the context of the error message?

The cylinders in a V6 or V8 engine are split into two sections called banks. To put it simply, bank 2 is the cylinder-less side of the engine.

How can one recognize a P0332 fault code?

The P0332 code is associated with a variety of issues, including the illumination of the Check Engine Light (CEL), a decrease in performance and fuel economy, misfires, and even stalling.

Can you tell me what could trigger a P0332 error?

Several issues might cause the P0332 error code to be stored in the computer’s memory, including a malfunctioning knock sensor, faulty knock sensor wiring or connectors, engine technical issues (such as a worn-out or damaged piston), an ECM malfunction, or an issue with the engine’s timing.

How do you determine what caused the P0332 error?

An OBD-II scanner is typically used to retrieve the P0332 code and any other codes present during diagnosis. The next step is for the technician to examine the knock sensor and its wiring for obvious signs of damage or wear. To confirm the sensor is working properly, they may do tests to measure its resistance.

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