P0328 2016 GMC Sierra Code - Knock Sensor Circuit High Voltage Bank 1
Quick Answer
The P0328 code on a 2016 GMC Sierra indicates that there is a high voltage condition in the knock sensor circuit for bank 1. Common causes include Faulty knock sensor, Wiring or connector issues in the knock sensor circuit, Corrosion or damage to the knock sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0328 2016 GMC Sierra indicates Knock Sensor Circuit High Voltage Bank 1.
- Common causes
- Common causes include Faulty knock sensor, Wiring or connector issues in the knock sensor circuit, Corrosion or damage to the knock sensor.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P0328 2016 GMC Sierra Description
The P0328 code on a 2016 GMC Sierra indicates that there is a high voltage condition in the knock sensor circuit for bank 1. The knock sensor is responsible for detecting engine detonation, or knocking, and sending signals to the engine control module (ECM) to adjust the ignition timing accordingly. When the knock sensor circuit shows high voltage, it means that the signal being sent to the ECM is outside of the expected range, which can lead to issues with engine performance and efficiency. This can result in reduced power, poor fuel economy, and potentially even engine damage if left unaddressed.
Common Causes of P0328 2016 GMC Sierra
- Faulty knock sensor.
- Wiring or connector issues in the knock sensor circuit.
- Corrosion or damage to the knock sensor.
- Engine mechanical problems causing excessive knocking.
- ECM software or hardware issues.
Symptoms of P0328 2016 GMC Sierra
- Engine knocking or pinging noises.
- Decreased engine performance or acceleration.
- Decreased fuel efficiency.
- Check Engine Light illuminated on the dashboard.
- Engine misfires.
How to Fix P0328 2016 GMC Sierra
- Begin by diagnosing the knock sensor circuit using a scan tool to verify the P0328 code.
- Inspect the knock sensor, wiring, and connectors for any signs of damage or corrosion.
- Test the knock sensor using a multimeter to ensure it is functioning properly.
- Replace the knock sensor if it is found to be faulty.
- Clear the code and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0328 2016 GMC Sierra
The cost of repairing a P0328 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of replacing a knock sensor can range from $100 to $300, including parts and labor. Additional costs may apply if there are wiring or connector issues that need to be addressed. It's important to keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
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