Parts for your 2011 Subaru Outback-Camshaft sensor

2011 Subaru Outback camshaft sensor — what it does, where it lives, and when to replace it

Yes, the 2011 Subaru Outback does use a camshaft position sensor. Technical references that confirm fitment include the Subaru Factory Service Manual (MY2011 Legacy/Outback) diagnostic sections listing camshaft sensor DTCs (e.g., P0340/P0341/P0345), the Subaru FAST parts catalogue that lists a camshaft position sensor for both the 2.5i (EJ25) and 3.6R (EZ36) engines, and common OEM supplier catalogues for this model year. On the 2.5i EJ25 there’s a single cam sensor, on the 3.6R EZ36 there are sensors for each bank (intake side) to support variable valve timing.

The camshaft sensor tells the ECU exactly where the cam(s) are in their rotation. That lets the car start cleanly, fire the injectors and coils in the right order, and adjust valve timing on engines with AVCS. If the sensor goes out of whack, the Outback can be hard to start, run rough, surge, or throw a check engine light and drop into limp mode.

For the 2011 Outback, the camshaft sensor isn’t a routine service item — it’s replaced when faulty. Still, a bit of attention during regular servicing helps it live a long, drama-free life.

• Typical symptoms: long crank, misfire, flat power, stalling, poor fuel economy, and codes like P0340/P0341/P0345.
• Quick checks: look for oil in the connector, brittle wiring near the sensor, or damaged harness clips. Clear codes and road test after any fix.
• Location: 2.5i EJ25 — at the rear/right-hand cylinder head near the timing cover. 3.6R EZ36 — one on each bank at the intake cam area.

Replacement is usually straightforward with basic tools. Disconnect the battery, unplug the sensor, remove the retaining bolt, and swap in the new unit with a fresh O-ring lightly oiled so it seats cleanly. Don’t overtighten the bolt — snug to factory spec. After refitting, clear the fault codes and let it idle for a few minutes so the ECU can relearn. If issues persist, rule out a failing crank sensor or, on the EJ25, a timing-belt alignment problem.

Use quality OEM or reputable aftermarket sensors — cheapies can cause intermittent gremlins that are a pain to chase. Keeping up with regular oil changes also helps, as contaminated oil and varnish can affect timing hardware and sensor signals over time.

Popular questions about the 2011 Subaru Outback camshaft sensor

Where is the camshaft sensor located on a 2011 Outback?
On the 2.5i EJ25, it’s mounted on the right-hand cylinder head near the rear of the timing cover. On the 3.6R EZ36, there’s a sensor on each bank at the intake cam area, accessible from the front/top of the engine bay. Removing the intake snorkel or engine cover often gives easier access.

Can a bad camshaft sensor damage the engine?
It’s unlikely to cause direct mechanical damage, but it can lead to poor running, misfires, and reduced power. Driving for ages with a failing sensor isn’t ideal — it can foul plugs, waste fuel, and stress the catalytic converters. Best to sort it once diagnosed.

Do both cam sensors need replacing on a 3.6R?
Not always. If diagnostics point to one bank (e.g., a specific code), replace the faulty sensor and recheck. That said, on high‑kilometre engines, some owners choose to replace both as preventative maintenance to avoid a second visit under the bonnet.