Parts for your 2007 Subaru Legacy-Crank angle sensor

2007 Subaru Legacy crank-angle sensor

Based on technical documentation, the 2007 Subaru Legacy is fitted with a crank-angle sensor (commonly called a crankshaft position sensor). Subaru’s Factory Service Manual for the BL/BP Legacy/Outback (MY2007) includes a dedicated “Crankshaft Position Sensor” diagnostic section, and Subaru’s parts catalogue lists a Sensor – Crankshaft Position for this model range (typical part numbers found in catalogues for 2005–2009 include 22056AA061 and 22056AA140). General repair guides covering 2003–2009 Legacy/Outback models also describe testing and replacement of the crank sensor and related fault codes (e.g., P0335 series). So yes—this part is relevant and used on the 2007 Subaru Legacy.

On the 2007 Subaru Legacy, the crank-angle sensor is the quiet hero that lets the engine management system know exactly where the crankshaft is and how fast it’s spinning. The ECU uses that signal for spark timing and fuel injection. If the sensor goes on the blink, the engine can be hard to start, run rough, or just cut out under the bonnet like someone flicked a switch. It’s why a healthy sensor is key to smooth running and decent fuel economy.

It’s a sealed, non-serviceable electronic sensor, so there’s no routine maintenance—just keep an eye on the wiring and connector. Age, heat and vibration can make the sensor intermittent after many years and kilometres. Typical symptoms include a crank–no start once hot, random stalling, a dead tach during cranking, or the MIL popping on with codes like P0335–P0339.

Replacement on an EJ-powered 2007 Legacy is straightforward for a competent home mechanic. The sensor lives at the top-rear of the engine block near the bellhousing, secured with a single small bolt. Usual approach is to disconnect the battery, remove the intake snorkel for space, unplug the connector, take out the retaining bolt, and ease the sensor out. Lightly lube the new O-ring, seat the new unit, route the loom exactly as factory, and tighten the bolt to the factory spec. Clear fault codes and check live data to confirm a steady crank signal. No special relearn is normally required—just a short road test to be safe.

When choosing a replacement, OEM or a high-quality aftermarket sensor is the go. Cheaper options can be hit and miss and may cause intermittent issues that are a pain to chase. If the vehicle’s copped water ingress or prior gearbox work, also inspect the harness for rub-through or corrosion.

• Common signs it needs attention: long crank/no start, hot restarts failing, sudden stall, rough idle, poor fuel economy, MIL with P0335-series codes.
• Good practice: keep the connector clean and clipped, avoid stretching the loom, and fix any oil leaks that might soak the plug.

FAQs

Where is the crank-angle sensor on a 2007 Legacy?
It’s mounted at the top-rear of the engine block near the bellhousing, held by a single small bolt. Access is usually from above with the intake snorkel removed. The connector sits nearby under the rear of the intake manifold—follow the short loom from the sensor body.

What symptoms point to a failing crank-angle sensor?
Hot no-starts, random stalling, long crank times, a dead or jumpy tacho during cranking, and the check engine light with P0335–P0339 are the usual suspects. Because the ECU relies on this signal for spark and injection timing, a failing sensor can mimic fuel or ignition faults.

Can it be driven with a dodgy crank sensor?
Not recommended. It may run intermittently and then die without warning, which isn’t ideal in traffic. A complete failure will leave the car cranking but not starting. Best to diagnose promptly and replace before it strands the driver.