P0328 Infiniti Code - Knock Sensor Circuit High Input- Bank 1
Quick Answer
The P0328 Infiniti code indicates that there is a high input signal from the knock sensor in Bank 1 of the engine. Common causes include Faulty knock sensor, Wiring issues or a short in the knock sensor circuit, Engine detonation or pre-ignition. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- P0328 Infiniti indicates Knock Sensor Circuit High Input- Bank 1.
- Common causes
- Common causes include Faulty knock sensor, Wiring issues or a short in the knock sensor circuit, Engine detonation or pre-ignition.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
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Code P0328 Infiniti Description
The P0328 Infiniti code indicates that there is a high input signal from the knock sensor in Bank 1 of the engine. The knock sensor is responsible for detecting abnormal combustion in the engine, which can cause knocking or pinging sounds. When the sensor detects a high input signal, it means that the engine is experiencing excessive knocking, which can lead to poor performance, reduced fuel efficiency, and potential damage to the engine over time. This issue can affect the timing of the engine, causing it to run inefficiently and potentially leading to engine misfires.
Common Causes of P0328 Infiniti
- Faulty knock sensor
- Wiring issues or a short in the knock sensor circuit
- Engine detonation or pre-ignition
- Engine overheating
- Engine mechanical problems, such as worn-out pistons or valves
Symptoms of P0328 Infiniti
- Engine knocking or pinging noises
- Decreased engine performance
- Reduced fuel efficiency
- Illuminated check engine light
- Engine hesitation or stalling
How to Fix P0328 Infiniti
- Diagnose the issue by using a scan tool to check for codes and perform a visual inspection of the knock sensor and wiring.
- Test the knock sensor using a multimeter to determine if it is functioning properly.
- Replace the knock sensor if it is found to be faulty.
- Inspect and repair any damaged wiring or connectors in the knock sensor circuit.
- Clear the fault codes and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0328 Infiniti
The cost of repairing a P0328 Infiniti code can vary depending on the specific cause of the issue. Typically, the cost of replacing a knock sensor ranges from $150 to $300, including parts and labor. If wiring repairs are needed, the cost may increase slightly. Additionally, diagnostic time and labor rates can vary, so it's recommended to contact local auto repair shops for a more accurate estimate based on your location and vehicle.
Tech Notes for P0328 Infiniti
When is the Code Detected?
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Information for Specific Infiniti Models
- P0328 2003 Infiniti G35 — Knock Sensor Circuit High Input- Bank 1
- P0328 2004 Infiniti G35 — Knock Sensor Circuit High Input- Bank 1
- P0328 2005 Infiniti G35 — Knock Sensor Circuit High Input- Bank 1
- P0328 2006 Infiniti G35 — Knock Sensor Circuit High Input- Bank 1
Frequently Asked Questions about P0328 Infiniti Code
1. What does the OBDII code P0328 mean for an Infiniti vehicle?
P0328 indicates a "Knock Sensor Circuit High Input" for Bank 1, meaning the knock sensor is detecting a signal voltage that is higher than expected.
2. What are the common symptoms of a P0328 code in an Infiniti?
Symptoms may include poor engine performance, reduced fuel efficiency, engine knocking or pinging sounds, and sometimes an illuminated Check Engine Light.
3. What causes the P0328 code in an Infiniti?
Common causes include a faulty knock sensor, damaged sensor wiring, a poor electrical connection, or an internal engine issue causing abnormal knocking.
4. Can I drive my Infiniti with a P0328 code?
Driving with this code is not recommended, as it may lead to engine damage if knocking occurs unchecked. It's best to address the issue promptly.
5. How do I fix the P0328 code in my Infiniti?
Repairs typically involve inspecting and replacing the knock sensor, repairing damaged wiring or connectors, and addressing any mechanical engine issues.
6. Where is the knock sensor located on an Infiniti engine?
The knock sensor is usually located on the engine block, cylinder head, or intake manifold, depending on the model and year of the Infiniti.
7. How much does it cost to fix a P0328 code on an Infiniti?
Repair costs can range from $200 to $600 or more, depending on whether the knock sensor, wiring, or other components need replacement.
8. Can a bad knock sensor damage my Infiniti's engine?
While a bad knock sensor itself won't directly damage the engine, ignoring the issue may result in engine knocking, which can cause severe damage over time.
9. How do I prevent the P0328 code from recurring in my Infiniti?
Regular maintenance, using the correct fuel grade, and addressing engine issues promptly can help prevent this code from recurring.
10. Will a P0328 code cause my Infiniti to fail an emissions test?
Yes, a P0328 code may cause your vehicle to fail an emissions test because it can affect engine performance and increase emissions output.
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