The P0326 code means that the Engine Control Module (ECM) has detected a reference voltage from the knock sensor that has fallen outside the threshold of acceptance set by the manufacturer. The knock sensor’s job is to inform the ECM of any abnormal engine noises that may be occurring, such as spark knock.
What can cause a P0326 code?
What are the Possible Causes of the P0326 Code?
- Defective knock sensor.
- Wiring issue.
- Internal engine problem.
- Faulty PCM.
What would cause my knock sensor code?
P0325 can be caused by anything from damaged wiring to a bad knock sensor to an overheating engine. It’s impossible to give an accurate estimate without properly diagnosing the issue first.
How do you fix a knock sensor on a circuit malfunction?
Zitat von Youtube: Use a multimeter to proceed with a resistance test on the knock sensor in order to get a correct reading check your owner's manual to see the specific knock sensor resistance range for your vehicle.
How do I fix code P0325?
What repairs can fix the P0325 code?
- Replacing the ECU.
- Repairing or replacing the wiring harness.
- Replacing a faulty knock sensor.
- Repairing an electrical connection.
How do I fix code P0326?
What repairs can fix the P0326 code?
- Replacing the knock sensor.
- Repairing or replacing any wiring or connectors that are associated with the knock sensor.
- Plugging the knock sensor back in.
- Replacing the Engine Control Module.
Where is knock sensor located?
The knock sensor is located on the engine block, cylinder head, or intake manifold. Its senses vibrations caused by engine knock or detonation. When the ECM receives this signal, it retards the ignition timing, averting harm to the engine.
Can a vacuum leak cause a knock sensor code?
vacuum leak will cause lean condition, could be intermittent enough to cause a knock. Or you could have a bad knock sensor and this stuff. Either way you need to do a vacuum check, if it’s leaking, fix it, clear codes and see what happens.
How do you check a knock sensor?
Zitat von Youtube: Now you'll want to connect one lead to the North sensor connection. And connect the other to the not sensor housing and the good GM mark sensor will fall between 93 to 110 thousand ohms of resistance.
Can a knock sensor cause transmission problems?
A malfunctioning knock sensor can cause transmission problems because it doesn’t relay the right time for the engine to fire the spark plugs. This causes a power loss and that can cause the transmission to use a different gear than it normally would to compensate.
Can a knock sensor be reset?
If you have replaced the knock sensor, then defenitly reset your ECU. Once that is complete, you should have full power almost immediately. no nothing bad will happen from resetting your ecu. but it will take your engine about 50 miles (from my experience) to relearn everything.
What happens if you unplug your knock sensor?
Disconnecting it will not give you any direct data. If there is a real knock problem, you could end up damaging the engine. Second, if there is an issue with the knock sensor itself, you’d most likely get a trouble code of P0325, which is about a circuit malfunction.