Parts for your 2020 Subaru Xv-Camshaft sensor

2020 Subaru XV camshaft sensor — what it does and when to replace it

Yes, the 2020 Subaru XV definitely uses camshaft position sensors. Technical references including the Subaru Service Manual for MY2020 XV/Crosstrek (FB20 2.0‑litre DOHC) and the Subaru parts catalogue list two camshaft position sensors (right‑hand and left‑hand banks). They’re integral to the FB20’s AVCS variable valve timing and sequential fuel injection, so they’re very much relevant on this model.

The camshaft sensor’s job is to tell the engine control unit exactly where each cam is in relation to the crank. On the XV’s FB20, that info is used to time fuel injection, spark, and to fine‑tune the AVCS cam advance for smooth idle, decent grunt, and good fuel economy. If a sensor goes out of whack, the ECU can fall back to a safe map, which usually means hard starting, rough idle, and pretty average performance.

There’s no scheduled replacement interval for camshaft sensors, they’re essentially fit‑and‑forget. Still, a bit of attention during regular servicing goes a long way. Keeping oil quality up to scratch (right grade, changed on time) matters because the sensor reads a trigger on the cam while living in an oily environment. Fresh oil and proper levels help the AVCS system operate cleanly and can head off nuisance faults.

• Common signs of a dodgy sensor: long crank or no‑start when hot, stumbling at idle, flat spots on acceleration, poor fuel use, and a check‑engine light (often codes like P0340/P0341/P0345).
• Under the bonnet, look for oil weeping around the sensor body or perished O‑rings, and check the harness for heat damage or loose clips.

Replacement on the XV is straightforward for a competent DIYer, but many owners will prefer a technician. Typical steps are: disconnect the battery, access the rear/top of each cylinder head to find the sensor, unplug the connector, remove the retaining bolt, swap the sensor (use a new O‑ring), refit, and clear fault codes. Afterward, let the ECU relearn idle with a short drive. Always rule out wiring faults before throwing parts at it, and stick with a genuine or high‑quality aftermarket sensor to avoid intermittent dramas.

• Handy tips: don’t mix up bank positions, route the loom away from hot spots, avoid over‑tightening the retaining bolt, and keep connectors clean and dry.

Done right, a healthy camshaft sensor keeps the XV starting first go, idling smoothly, and pulling cleanly through the revs on Aussie and Kiwi roads.

Popular questions about the 2020 Subaru XV camshaft sensor

Where is the camshaft sensor located on a 2020 Subaru XV?
On the FB20 engine there are two camshaft sensors, one on each cylinder bank near the rear/top of the cam cover area. They’re positioned to read the cam trigger wheels and are labelled for right‑hand and left‑hand banks.

Access usually involves removing engine covers for room. A torch and a small ratchet make the job easier.

Is it safe to drive with a faulty camshaft sensor?
It might run, but it can stall, hesitate, and drink more fuel. The ECU may drop into a limp strategy, which isn’t ideal for safety or the catalytic converter.

If the light’s on and the car is playing up, it’s best to book it in promptly and avoid long trips until it’s sorted.

Can a camshaft sensor be cleaned or does it need replacing?
If the issue is a dirty connector or slight oil seepage past the O‑ring, cleaning and resealing can help. However, when the internal electronics fail, replacement is the fix.

Always check the wiring and connector condition first, many “sensor” faults turn out to be harness or pin issues.