The OBD code P0328 for Lexus indicates a problem with the Knock Sensor Circuit High Input Bank 1. This affects the engine’s ability to adjust ignition timing properly, leading to symptoms like the Engine Light ON, engine lack of power.
Common causes include a faulty knock sensor, poor electrical connections, or issues with the Engine Control Module.
It’s a moderate issue that should be addressed promptly.
A possible fix involves inspecting and repairing the knock sensor circuit and related components.
Repair Importance Level | 10.0 (Out of 10) |
Estimated Repair Time | Approximately 1.0 hour |
Repair Difficulty Level | 6.67 (Out of 10) |
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Symptoms of the Lexus p0328 OBD Code
The vehicle may experience poor acceleration and increased fuel consumption with fault code P0328 on a Lexus.
- With OBD code P0328 on a Lexus, the Engine Light will be ON.
- The Service Engine Soon Warning Light may illuminate.
- The engine may experience Lack or Loss of Power.
Causes of the Lexus p0328 OBD Code
Possible triggers for Lexus fault code P0328 include faulty knock sensor, wiring issues, or engine mechanical problems.
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- P0328 can be caused by a faulty Knock Sensor.
- A Knock Sensor circuit with poor electrical connection.
- An open or shorted Knock Sensor harness.
- A faulty Engine Control Module (ECM).
Fixing Lexus Error Code p0328 Step By Step
Replace faulty knock sensor to resolve Lexus fault code P0328.
- To fix the Lexus OBDII code P0328, first, review the possible causes related to the knock sensor circuit.
- Visually examine the wiring harness and connectors for any damage.
- Check the connector pins for signs of being broken, bent, pushed out, or corroded.
- Test the knock sensor and its wiring for proper resistance and continuity.
- Replace the knock sensor if it fails the test.
- Clear the fault codes and perform a test drive to verify the repair.
Cost Of Fixing Lexus p0328 Fault Code
The repair for Lexus fault code P0328 typically involves replacing the knock sensor.
The cost to diagnose and fix a Lexus OBD code P0328 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the total cost could be between $75 and $150. Factors like shop rates and the complexity of the repair can influence the final cost.
Details of the Lexus p0328 OBD Code
Lexus code P0328 indicates a high voltage condition in the knock sensor circuit.
OBD code P0328 for Lexus vehicles indicates a knock sensor circuit high input condition.
This means that the knock sensor has detected a higher than normal voltage signal, which could be caused by engine knocking or pinging.
The knock sensor is the component that triggers this fault code, and it is responsible for detecting abnormal combustion in the engine.
The signal or system involved in this code is the knock sensor circuit, which sends signals to the engine control module (ECM) to adjust ignition timing and prevent engine damage.
Mechanic’s Tech Notes
Detailed information on diagnosing and repairing fault code P0328 in a Lexus vehicle.
To diagnose and fix OBDII code P0328 in a Lexus, start by checking the knock sensor circuit.
Use a voltmeter to test the sensor’s resistance and ensure it falls within specifications.
Inspect the wiring harness for any damage or corrosion.
Verify the sensor’s signal using a scan tool to see if it matches engine conditions.
If the sensor and wiring are good, the issue may lie with the engine control module (ECM).
Consider reprogramming or replacing the ECM if necessary.
Remember to clear the code after repairs and test drive the vehicle to ensure the problem is resolved.
FAQ
Common symptoms of OBD code P0328 in a Lexus include Engine Light ON, engine lack of power. Causes may be a faulty knock sensor or ECM. Fix: Inspect wiring and connectors.
OBD code P0328 in a Lexus is typically caused by a faulty knock sensor or related wiring issues. Diagnose by visually inspecting wiring and connectors for damage.
To address OBD code P0327, inspect knock sensor and related wiring for faults. Check for poor connections, shorts, or damage. Repair as needed.

Wrap Up
If your Lexus is displaying OBD code P0328, you may experience engine knocking, reduced engine performance, or even stalling.
This code typically indicates a fault with the knock sensor circuit, such as a faulty knock sensor, damaged wiring, or poor connections.
To address Lexus OBD code P0328, start by inspecting the knock sensor and its wiring harness for any signs of damage or corrosion.
Test the sensor’s resistance and ensure proper connection at the sensor and ECU.
Replace the knock sensor if necessary and repair any wiring issues to resolve the fault.