Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is getting a signal from the knock sensor that is too high. The knock sensor helps the car know if the engine is making noises that could be bad, like knocking or pinging.
The P0328 code indicates that the voltage signal from the knock sensor is higher than the expected range set by the manufacturer.
The knock sensor detects vibrations caused by engine knock or detonation. When the sensor's output voltage is higher than the manufacturer's specified range, the engine control module (ECM) triggers the P0328 code. This can be due to a faulty sensor, wiring issues, or other related problems.
• Check Engine Light illuminated
• Poor engine performance
• Increased fuel consumption
• Faulty knock sensor
• Wiring issues such as short circuits or open circuits
• Poor electrical connection at the knock sensor
Knock Sensor: A device that detects engine knocking and sends signals to the ECM.
ECM: Engine Control Module, the computer that manages engine functions.
• Use an OBD-II scanner to verify the code.
• Inspect the knock sensor and its wiring for damage.
• Test the knock sensor's voltage output and compare it to specifications.
• Replace the knock sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Clear the code and test drive to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Toyota Camry
• Honda Accord
• Nissan Altima
• Regularly inspect and maintain engine sensors.
• Ensure proper engine tuning and maintenance.
• Use the correct fuel octane rating for your vehicle.
Sensor Issue
• Have the vehicle inspected by a professional if you're unsure.
• Do not ignore the Check Engine Light as it can lead to more damage.
• Ensure regular maintenance to prevent sensor issues.
Check your vehicle's warranty as some manufacturers cover sensor replacements.
This code has been common in vehicles with aging sensors or poor maintenance practices.
Moderate – While the vehicle may still be drivable, it's important to address this issue to prevent potential engine damage.
Driving with a faulty knock sensor can lead to engine damage. Ensure repairs are made promptly to maintain vehicle safety and compliance.
• Engine at normal operating temperature
• Vehicle in a controlled environment
The knock sensor is typically located on the engine block, cylinder head, or intake manifold.
Q: Can I drive with a P0328 code?
A: It's possible to drive short distances, but it's not recommended as it can lead to engine damage.
Q: How do I reset the P0328 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is resolved, the code should not return.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.