P0327 - Knock Sensor 1 Circuit Low Input (Bank 1)

Knock sensor 1 signal is too low on bank 1.

Code Overview

Knock sensor 1 signal is too low on bank 1.

Common Causes

• Short to ground
• Failed knock sensor
• Harness issue
• Poor sensor mounting

Diagnostic Steps

1. Inspect the signal wire for a short to ground
2. Check connector condition
3. Look for damage near the intake valley or engine block

Likely Repairs & Cost Guides

Use test results to confirm the fault before pricing the repair.

Related OBD Codes

Browse the closest code-family pages when the same fault pattern often shows up nearby.

Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.