OBD-II code P2341 indicates that the engine control module has detected combustion vibration or knock on cylinder 6 that exceeds the calibrated threshold of the knock/combustion vibration sensor. This code points to a specific cylinder rather than a single shared knock sensor circuit. In most cases the sensor is reporting a real combustion event rather than failing on its own.
Low-octane fuel, carbon deposits, a hot spot, or an over-advanced ignition calibration can cause genuine detonation that the sensor is correctly reporting.
A vacuum leak, restricted injector, weak fuel pressure, or an EGR or cooling issue can lean the mixture enough to produce knock on a single cylinder.
Carbon on the piston crown, chamber walls, or valves raises effective compression and creates hot spots that ignite the mixture prematurely.
The sensor itself can drift, become contaminated, or fail internally, producing a false knock signal even when combustion is normal.
Corroded, loose, chafed, or oil-soaked wiring and connectors can create a noisy or out-of-range signal that the PCM interprets as knock.
Module failure is rare for this code. The PCM is typically reporting what it sees from the sensor, so it should only be considered after the sensor, wiring, and combustion causes are ruled out.
Light operation is usually possible for a short time, but if you can hear pinging or the check engine light is flashing under load, real detonation is occurring and can damage pistons, rings, or bearings. Reduce load and address it promptly.
No. Standard P0325 and P0330 refer to the main shared knock sensor circuit on most engines. P2341 specifically indicates that the control module has flagged combustion vibration on cylinder 6 and is generally associated with engines that use per-cylinder or ionization-based detection.
Almost never. P2341 is commonly misdiagnosed as a computer problem, but the PCM is reporting a real sensor input. The most frequent causes are real knock from fuel quality, carbon, or a lean condition, or a failed sensor or its wiring. Replacing the PCM without verifying these first usually does not resolve the code.
If the engine is knocking because the fuel octane is too low, premium fuel can stop the events and allow the code to clear on its own. It is a useful diagnostic step, but if the code returns on the recommended fuel, the underlying mechanical or sensor cause still needs to be found.