Parts for your 2013 Nissan Serena-Knock sensor

2013 Nissan Serena knock sensor: what it does, and when to sort it

Based on Nissan’s C26 Serena factory service manual (Engine Control/EC section) and the Nissan Electronic Parts Catalogue (FAST/EPC), the 2013 Nissan Serena (C26/HFC26) with MR20DE or MR20DD petrol engines is fitted with a knock sensor. The FSM details knock sensor operation and related DTCs (P0325–P0330), and the EPC lists the knock sensor as a service part (commonly referenced as 22060-7S000 or superseded equivalents, engine/market dependent). These technical sources confirm the knock sensor is relevant and used on the 2013 Serena.

• Nissan Serena C26/HFC26 Factory Service Manual – EC section: Knock Sensor (KS) description and diagnostics (incl. DTC P0325–P0330).
• Nissan FAST/EPC – C26 Serena MR20DE/MR20DD: Knock sensor listed as serviceable part (e.g., 22060-7S000, supersessions vary).

On the 2013 Nissan Serena, the knock sensor is a small, tough piezo unit bolted to the engine block that “listens” for pinging (detonation). When it hears knock, it sends a signal to the ECU so timing can be dialled back just enough to protect the engine while keeping things smooth. That smarts helps the Serena run happily on the fuel that’s actually in the tank, which is handy given day-to-day variations in 91/95 RON across AU and NZ.

What owners tend to notice when a knock sensor or its wiring plays up are things like the check engine light (often with P0325), a bit of sluggishness on hills, rougher running, or higher fuel use. Sometimes there’s audible pinging under load if timing can’t be corrected. Because the sensor lives down on the block, heat and age can make the harness brittle, and oil or coolant weeps can grime it up.

There’s no set replacement interval, it’s more a “when needed” item. During regular servicing, it’s smart to:

• Scan for codes and check live data if there’s any rattle, ping, or performance drop.
• Inspect the loom and connector for heat damage, hardening, or corrosion.
• Keep oil/coolant leaks in check so the sensor and plug don’t get soaked.
• Use quality fuel and keep the air filter and plugs fresh to reduce knock in the first place.

If replacement’s on the cards, go for a quality OEM-equivalent sensor. It’s mounted to the block (typically beneath the intake side on MR engines). Replacement basics are straightforward for a pro:

1. Disconnect battery and allow the engine to cool fully.
2. Access the sensor (intake components may need shifting).
3. Swap the sensor, keeping the mating surface clean and torquing to the spec in the Nissan FSM.
4. Clear codes and verify knock feedback and ignition timing with a scan tool.

Avoid over-torquing (it can skew readings) and don’t smear sealant under the sensor—it needs clean metal-to-metal contact to “hear” properly. With a healthy knock sensor and good fuel, the Serena’s ECU can optimise timing for better drivability and economy while keeping the engine safe.

Popular questions about the 2013 Nissan Serena knock sensor

Where is the knock sensor on a 2013 Serena?
On MR20-series engines it’s bolted to the engine block, usually on the intake side beneath the manifold area. Access can be tight, some intake hardware may need to come off to reach the sensor and its connector cleanly.

Can a bad knock sensor damage the engine?
If the sensor can’t report knock, the ECU may default to conservative timing, which protects the engine but hurts power and economy. If there’s actual detonation and the system can’t respond, long-term heavy knock can be harmful. Sorting the sensor or wiring promptly is the safest move.

Does fuel quality affect how the knock sensor works?
The sensor itself listens the same, but lower-octane or poor-quality fuel can increase knock tendency. The ECU uses the sensor’s feedback to adjust timing. Consistent, good-quality fuel helps reduce knock events and keeps the system working in its sweet spot.