All codes › P0327
P0327: Knock Sensor 1 Circuit Low (Bank 1 or Single Sensor)
What it means
The bank 1 knock sensor signal is too low.
Severity: Medium Reduced power possible.
Common causes
- Failed sensor
- Open or shorted wiring
- Loose sensor
- Corroded connector
Most common causes first. Exact causes vary by make, model and engine.
Can I fix it myself?
Rarely DIY. Check the harness before pulling the intake.
Repair cost
SEEDED ESTIMATE Roughly $130–$850
Most likely repair: knock sensor. Diagnosis fees, taxes and other causes are not included.
| Line | Low | High | Basis |
|---|---|---|---|
| Knock sensor | $30 | $206 | Typical listed retail range, source ($328 outlier excluded) |
| Labor 1–4 hr | $100 | $640 | $100–$160/hr, shop survey |
⚠️ This is an editorial placeholder range for this type of repair. It is not based on real invoices or licensed pricing data yet. Real ranges will appear here once enough reader invoices for P0327 are verified.
Verified reader invoices for P0327: 0. Share your repair bill to help build real costs.
Tools that can read P0327
- ScanFixAI: Pro $29.99/mo or $249.99/yr
- OBDAI: Annual PRO bundle $299
- BlueDriver Pro Next-Gen: $119.95 list ($99.95 sale seen)
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