Parts for your 2007 Subaru Forester-Crank angle sensor

2007 Subaru Forester crank angle sensor: what it does and how to look after it

Based on the Subaru Factory Service Manual for the 2007 Forester (SG platform), Subaru’s Technical Information System (STIS), and OEM parts catalogues, this model absolutely uses a crankshaft position sensor—often called a crank angle sensor. It’s a core engine management input on the EJ-series engines fitted to 2007 Foresters in Australia and New Zealand.

The crank angle sensor tells the ECU exactly where the crankshaft is and how fast it’s spinning. That live data lets the ECU fire the coils and injectors at the right moment, stabilise idle, detect misfires, and coordinate with the camshaft sensor for correct phasing. If the sensor signal drops out, the Forester will crank but usually won’t start, if it’s going flaky, expect rough running, random stalling, or the check engine light with codes like P0335.

On the 2007 Forester’s EJ engine, the sensor is mounted at the back of the engine near the top of the bellhousing, reading a toothed wheel on the flywheel/flexplate. It’s typically a two-wire magnetic pickup, robust but not immortal. It’s not a scheduled service item, yet it benefits from a quick look during major services—especially on higher‑kilometre cars or ones used off‑road.

• Tell-tales it’s struggling: long cranking, intermittent no‑start, tachometer drops to zero while cranking, CEL on with crank sensor codes.
• Simple checks: inspect the connector for looseness or corrosion, look for harness chafing near the bellhousing, and ensure there’s no oil contamination around the plug.

If replacement’s on the cards, it’s a straightforward job for a competent DIYer or any workshop. Disconnect the battery, unplug the sensor, remove the single retaining bolt, and lift it out. Lightly oil the O‑ring on the new unit, seat it fully, nip the bolt to factory spec (do not overtighten), and reconnect. No programming is required, just clear any stored codes and let the ECU relearn idle after a short drive. Stick with a quality OEM or reputable aftermarket sensor—cheap copies can cause weak signals and ghost faults.

Handy servicing tips for this Forester’s crank angle sensor:

• Keep the connector clean and latched, water ingress is a common culprit.
• Do not shim or file the mounting pad—the air gap is set by design.
• If faults persist, check engine and body earths, poor grounds can mimic sensor failure.

Where is the crank angle sensor on a 2007 Subaru Forester?

It sits at the back of the engine near the top of the bellhousing, reading the flywheel/flexplate. In right‑hand‑drive markets, access is typically from the driver’s side under the rear of the intake area. Look for a small sensor held by a single bolt with a two‑pin connector.

Does a replacement crank angle sensor need programming?

No programming is needed on the 2007 Forester. Fit the new sensor, reconnect, and clear any fault codes. The ECU will relearn trims and idle during normal driving, a brief idle relearn after battery reconnection is all that’s usually required.

What are common symptoms or fault codes of a failing crank angle sensor?

Typical signs include long cranking, random stalls, a dead or jumping tacho while cranking, and the check engine light. Common OBD-II codes are P0335 and related variants indicating crankshaft position sensor circuit issues.