P0327 on Toyota: Causes, Symptoms and Fix Cost
Quick Answer
Safe to drive (short-term)
P0327 on a Toyota means the ECU detected a voltage signal from knock sensor 1 (or the single knock sensor on inline-4 engines) that is below the expected range. The knock sensor is a piezo-electric device bolted to the engine block that listens for the high-frequency vibration of detonation. A low input typically points to a failed sensor, damaged wiring, or a poor electrical connection.
- Severity
- Moderate · Electrical
- Typical repair cost, all makes
- €60-€700
Connect a standard OBD2 adapter (Bluetooth LE on iPhone) to your Toyota and Skanyx tells you what P0327 means on that engine, whether it is safe to keep driving, and what the fix should cost. Free on iPhone and Android.
Get Skanyx freeWhat does P0327 mean on a Toyota?
The Quick Answer above is the generic definition. What follows is the model-specific detail for the Toyota models that log P0327.
Toyota Camry
2007-2024
The 2GR-FE V6 (2007 to 2017 Camry) has knock sensors mounted in the valley between the cylinder banks. The intake manifold must be removed for access, typically 3 to 5 hours of labour. Always replace both knock sensors together on the 2GR-FE. The 2AR-FE inline-4 (2010+ 4-cylinder Camry) has the sensor on the side of the block and is far cheaper to service.
What causes P0327 on a Toyota?
Beyond the generic causes listed on the main P0327 page, these are the patterns noted for Toyota models:
2GR-FE V6 knock sensors in the valley between the cylinder banks, under the intake manifold (expensive)
: Toyota Camry
2AR-FE inline-4 sensor wiring fatigue (cheaper repair)
: Toyota Camry
How to diagnose P0327 on a Toyota with OBD2
- Locate knock sensor 1. On inline-4 engines it is bolted to the engine block, typically on the intake side. On V6 and V8 engines, knock sensors often sit in the valley under the intake manifold, which makes access expensive
- Inspect the connector for corrosion or damage. Disconnect, clean with electrical contact cleaner, and reseat. Clear the code and drive several cycles to see if it returns
- Measure sensor resistance with a multimeter. Depending on design, knock sensors read anywhere from roughly 100 kΩ to several megohms, and some show no continuity at all, so compare with the figure for your engine rather than a generic number. A reading near zero indicates a shorted sensor
- Inspect the wiring from the sensor back to the ECU connector. Look for chafing, rodent damage, or breaks. The wire is a shielded twisted pair on most modern designs
- If the sensor and wiring are good, verify mounting torque. Knock sensors are torque-sensitive (typically 20 to 25 Nm). Loose or over-tight mounting alters the sensor signal and can trigger P0327
How much does P0327 cost to fix on a Toyota? (EUR)
Estimated repair costs for P0327 in EUR, compiled across makes. Toyota costs typically sit in the middle of each range.
| Repair | Parts Cost | Labor Cost | Total Estimate | DIY Difficulty |
|---|---|---|---|---|
| Repair connector or wiring at knock sensor | €10–€40 | €50–€150 | €60–€190 | Moderate |
| Replace knock sensor (inline-4, accessible) | €40–€150 | €50–€100 | €90–€250 | Moderate |
| Replace knock sensor under intake manifold (V6/V8) | €40–€200 | €200–€500 | €240–€700 | Professional |
Prices estimated as of October 2026. Costs vary by region, vehicle, and shop.
Codes related to P0327
These codes are often seen alongside P0327 or point to related issues, on any make:
Looking for the full P0327 reference (all makes, full diagnosis flow, complete repair cost matrix)? See the main P0327 guide