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P2346 is a diagnostic trouble code (DTC) for "Cylinder #11 Above Knock Threshold". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Cylinder #11 Above Knock Threshold
Code P2346 means that the engine control module (ECM) detected the cylinder #11 knocking more than the specified limits before turning on the Check Engine Light.
The engine control module (ECM) signal return from cylinder #11 knock sensor indicates the cylinder is knocking.
The cylinder knocking could be caused from the cylinder running lean on fuel from a clogged injector or having a mechanical problem like a piston or bearing knock.
Poor fuel or low octane levels.
Scans the codes and documents the code in the ECM
Diagnoses the code as per the manufacturer's pinpoint test to verify the sensor signal
Checks the sensor detection of knock to see when it happens in order to verify if it is mechanical or a fuel related ping in the engine
Listens to the noise if possible to isolate the component
Pinpoints the cause to the failed component
Knocks on the block near the sensor to simulate a knock to test sensor
Clearing ECM memory codes before checking the freeze frame data of the failure so the failure can be duplicated
Failing to clear ECM codes after the P2346 codes are fixed
Replacing the sensor when the problem has not been duplicated
Repairing the wiring or connection to the knock sensor assembly or replace the sensor if faulty
Repairing any internal mechanical problem to the #11 cylinder that caused the knock
Code P2346 can be generated from fuel that is of very low octane and just happens that cylinder #11 is the first to detect the ping from low octane fuel. The fuel should be tested.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.