P0324 to P0334: knock sensor and knock control
A knock sensor has a circuit fault or an implausible signal, or the knock control system as a whole has reported an error.
SeverityModerateUsually not urgent today, but it can get worse if left.
Can you keep driving?Drive gently, check it soonWhat does P0325 mean?
A knock sensor is a small microphone bolted to the engine block that listens for the sharp vibration of uncontrolled combustion, called knocking or pinking. When it hears it, the computer retards the ignition timing on that cylinder until the noise stops. With the sensor out of action, most engines play safe and retard the timing permanently, which costs power and economy.
What causes P0325?
- A damaged wire or connector, often buried under the intake manifold
- A knock sensor that has cracked or failed
- A sensor that has been tightened to the wrong torque after a repair
- Real engine noise, such as a loose part, that the sensor reads as knock
What to check first for P0325
- Check whether the code names sensor 1 or 2, and which bank
- Inspect the wiring to the sensor for chafing and corroded terminals
- Check the sensor's mounting bolt for the correct torque
- Listen for mechanical noises that could be confusing the sensor
Can you drive with P0325?
Usually safe to drive to a workshop. The engine may feel flat and use more fuel. If you hear real pinking under load, ease off and avoid heavy acceleration until it is checked.
In states with an OBD-II emissions inspection, a car with the check engine light on fails the test until the fault is fixed.
Codes on this page
11
- P0324Knock Control System Error
- P0325Knock Sensor 1 CircuitBank 1 or Single Sensor
- P0326Knock Sensor 1 Circuit Range/PerformanceBank 1 or Single Sensor
- P0327Knock Sensor 1 Circuit LowBank 1 or Single Sensor
- P0328Knock Sensor 1 Circuit HighBank 1 or Single Sensor
- P0329Knock Sensor 1 Circuit Input IntermittentBank 1 or Single Sensor
- P0330Knock Sensor 2 CircuitBank 2
- P0331Knock Sensor 2 Circuit Range/PerformanceBank 2
- P0332Knock Sensor 2 Circuit LowBank 2
- P0333Knock Sensor 2 Circuit HighBank 2
- P0334Knock Sensor 2 Circuit Input IntermittentBank 2
Related codes
Checked on · Rafael Soares
These are the generic meanings every manufacturer shares. Each brand adds its own detail, so your car's handbook, its service information and a qualified mechanic have the last word. OdoKeep has no connection with any manufacturer, and the app does not read codes from the car.
