Parts for your 2010 Subaru Exiga-Knock sensor

2010 Subaru Exiga knock sensor — what it does and how to look after it

For the 2010 Subaru Exiga (YA-series, EJ20/EJ25 including GT), a knock sensor is fitted from factory. This is confirmed by Subaru’s workshop literature and parts data, including: Subaru Exiga/Legacy/Outback MY2009–MY2012 Service Manual (Engine Diagnostics — Knock Sensor), Subaru FAST parts catalogue listings for Exiga YA models (knock sensor, e.g., 22060-AA160, superseding earlier EJ listings), and Subaru OBD-II DTC coverage showing knock-sensor codes P0325–P0328 for EJ engines used in Exiga. These technical sources establish that the knock sensor is relevant and used on the 2010 Exiga.

The knock sensor is a small piezoelectric microphone bolted to the top of the engine block (beneath the intake manifold). It listens for high-frequency vibration (detonation/“pinging”) and tells the ECU to tweak ignition timing to protect the engine. On Aussie and Kiwi petrol, and with varied loads from around-town to highway climbs, this sensor is crucial for keeping the EJ engine smooth, efficient and safe.

It isn’t a scheduled replacement item, but it deserves attention during servicing — especially when the intake is off for spark plugs or manifold work. The mounting face on the block should be clean and dry, the connector pins free of corrosion, and the wiring not chafed. When refitting, tighten the single bolt to about 24 N·m and align the sensor exactly as specified in the Subaru workshop manual, over-tightening or incorrect orientation can skew readings.

• Common signs of trouble: check engine light with P0325–P0328, dull performance, higher fuel use, or persistent pinging under load.
• Location tip: on EJ engines it sits centrally on the block under the manifold — accessible once the top-side plumbing is moved aside.
• Parts note: genuine or quality OEM sensors are recommended, part number varies by VIN (many YA-series use 22060-AA160).

Replacement is straightforward: battery off, unplug, remove the single bolt, install the new sensor dry on a clean surface, torque correctly, and clear codes. If knock codes persist after a new sensor, check fuel quality (95+ RON on GTs is wise), carbon build-up, or wiring faults before assuming ECU issues.

Does a 2010 Subaru Exiga have a knock sensor and where is it?

Yes. The EJ-series engine in the 2010 Exiga uses a single knock sensor mounted on the top of the engine block beneath the intake manifold. Access typically requires removing or moving intake components for a clear line to the sensor and its single mounting bolt.

What’s the correct torque for the Exiga’s knock sensor bolt?

About 24 N·m. That’s tight enough for solid contact without crushing the sensor. Always install it dry on a clean, flat surface and set the orientation as per the workshop manual to ensure accurate knock detection.

Is it safe to keep driving with a knock sensor fault code?

The ECU will usually pull timing to protect the engine, which means lazier performance and higher fuel use. It’s best to sort it promptly — verify the sensor and wiring, then road-test with good-quality petrol to make sure the engine isn’t actually knocking under load.