P0328 — Knock Sensor 1 Circuit High Input (Bank 1)
Category: Powertrain Severity: Medium
Updated:
DTC code P0328 means: Knock Sensor 1 Circuit High Input (Bank 1). It falls under the "Powertrain" category, with an estimated severity of Medium. Common causes include failed knock sensor, wire shorted to voltage and excessive mechanical engine noise; it's worth confirming the diagnosis before replacing parts.
Possible causes
- Failed knock sensor
- Wire shorted to voltage
- Excessive mechanical engine noise
- Loose sensor
Symptoms
- Check engine light
- Loss of power
- Higher fuel consumption
How to diagnose it step by step
- Check wiring.
- Check torque.
- Listen for mechanical noises.
- Replace the sensor.
How to fix it
Check the wiring and sensor torque. If the engine has mechanical noises (lifters, timing chain), fix them: the sensor reads them as knock.
Estimated repair cost
$100–400 installed.
Frequently asked questions
What does DTC code P0328 mean?
Knock Sensor 1 Circuit High Input (Bank 1).
Is code P0328 serious?
Severity Medium. Not urgent, but worth diagnosing to avoid bigger damage.
Can I keep driving with code P0328?
Yes, with caution.
Related codes
P0327 P0325 P0320 P0332 P0335 P0336 P0316 P0340 P0341 P0344
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