What the P0325 code means
P0325 is a general ODB2 diagnostic trouble code associated with the knock sensor circuit. This code may be seen with other knock sensor codes and lean condition codes.
P0325 means that there is a malfunction within the knock sensor 1 in-circuit bank 1. This malfunction will be detected by the ECU when it does not receive the proper information from the knock sensor. This triggers a Check Engine Light to be illuminated on the dashboard.
What can cause a P0325 code?
Code P0325 means that your car computer detects a problem with the knock sensor unit or its circuit. The knock sensor detects the vibrations from abnormal combustion, known as spark knock. A car can have one or two knock sensors depending on its make and model.
How do I fix knock control error?
What repairs can fix the P0324 code?
- Addressing a knocking, pinging, or misfiring engine issue.
- Replacing the knock sensor.
- Repairing a poor electrical connection to the knock sensor's circuit.
- Replacing the wiring harness for the knock sensor.
- Replacing or reprogramming the PCM (rare)
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.
What's a knock sensor?
The engine's knock sensor (or sensors) detects preignition and detonation, potentially damaging forms of abnormal combustion. Though full-blown knocking and pinging are audible to the human ear, the knock sensor detects imperceptible levels.
Where is a 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.
Will the knock sensor cause a check engine light?
The most common sign of a bad knock sensor is an illuminated check engine light. When the PCM detects a problem with the knock sensor or its circuit, the module will turn on the check engine light and store a corresponding diagnostic trouble code (DTC) in its memory.
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.
How much is a knock sensor?
The average cost for knock sensor replacement is between $297 and $381. Labor costs are estimated between $186 and $235 while parts are priced between $111 and $146. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.