P0327 — Knock Sensor 1 Circuit Low Input (Bank 1)
Category: Powertrain Severity: Medium
Updated:
DTC code P0327 means: Knock Sensor 1 Circuit Low Input (Bank 1). It falls under the "Powertrain" category, with an estimated severity of Medium. Common causes include failed knock sensor, incorrect sensor mounting torque and wire open or shorted to ground; it's worth confirming the diagnosis before replacing parts.
Possible causes
- Failed knock sensor
- Incorrect sensor mounting torque
- Wire open or shorted to ground
- Corroded connector
Symptoms
- Check engine light
- Slight loss of power (retarded timing)
- Higher fuel consumption
How to diagnose it step by step
- Check connector and wiring.
- Check sensor torque.
- Measure sensor resistance.
- Replace the sensor.
How to fix it
Check the connector and the sensor torque (typically 15 ft-lb / 20 Nm). If the wiring is fine, replace the sensor.
Estimated repair cost
Sensor: $30–120; $100–400 installed (under the intake on some V6s).
Frequently asked questions
What does DTC code P0327 mean?
Knock Sensor 1 Circuit Low Input (Bank 1).
Is code P0327 serious?
Severity Medium. Not urgent, but worth diagnosing to avoid bigger damage.
Can I keep driving with code P0327?
Yes, you can drive; avoid low-octane fuel and heavy loads.
Related codes
P0328 P0325 P0320 P0332 P0335 P0336 P0316 P0340 P0341 P0344
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