Parts for your 2016 Subaru Legacy-Crank angle sensor

2016 Subaru Legacy crank angle sensor (crankshaft position sensor)

Technical sources confirm the 2016 Subaru Legacy is fitted with a crank angle sensor (commonly called a crankshaft position sensor, CKP). The Subaru Factory Service Manual for 2015–2017 Legacy/Outback (Engine Diagnostics) details DTCs such as P0335–P0339 for the CKP circuit, and the Subaru parts catalogue lists a dedicated crankshaft position sensor for both the 2.5‑litre FB25 and 3.6‑litre EZ36 engines. These documents, along with standard OBD‑II references used by Subaru for misfire and timing control, make the sensor relevant and essential on this model.

On the 2016 Legacy, the crank angle sensor keeps the engine control module in the loop about exactly where the crankshaft is in its rotation and how fast it’s spinning. That timing info is the backbone for spark and fuel delivery, synchronising injection with the cam sensors, managing variable valve timing, and even detecting misfires. If the sensor signal drops out, the car may crank without starting, stumble, or stall because the ECU loses its place.

There’s no scheduled replacement for the crank angle sensor, it’s a fit‑and‑forget item until it shows symptoms or logs a fault code. As part of routine servicing, it’s smart to check the connector for corrosion, make sure the wiring loom isn’t chafed near the front of the engine, and keep an eye out for oil leaks or coolant drips that could contaminate the sensor. Healthy battery voltage and solid engine grounds also help keep its signal clean.

• Common tell‑tales of a failing CKP: long crank/no‑start, sudden stalling, rough running or flat spots, tacho dropouts, and DTCs like P0335.
• It’s a small sensor with a big job, when it plays up, the ECU can’t accurately time spark or fuel.

Replacement is straightforward and usually quick for a workshop. The job is typically: disconnect the battery, unplug the sensor, remove its retaining bolt, lift the sensor straight out, lightly oil the O‑ring on the new unit, seat it squarely, and torque the bolt to the factory spec from the Subaru manual. Use a quality OEM‑spec sensor—cheap clones can have weak signal output or poor sealing. After refitting, clear any codes and confirm clean live data and normal starting. If a new sensor doesn’t resolve a CKP code, the next checks are the harness continuity, ECU pin fit, and the crankshaft reluctor ring condition. On higher‑kilometre cars, also assess cam sensors and timing components if symptoms persist.

For owners around Australia and New Zealand, booking the Legacy in when early symptoms pop up can save a tow and prevent an inconvenient no‑start at the servo.

Popular questions

Where is the crank angle sensor on a 2016 Subaru Legacy?
It’s mounted to the engine block reading a toothed reluctor on the crankshaft. Access varies slightly by engine (FB25 2.5L vs EZ36 3.6L), but in both cases it sits close to the crank’s trigger wheel and connects via a two‑pin or three‑pin plug on the engine harness.

What are the symptoms of a bad crank angle sensor on this model?
Owners often notice extended cranking, a sudden stall while driving, uneven idle, loss of power, or intermittent tachometer dropouts. The check engine light may appear with codes such as P0335. Because the ECU relies on this signal, faults can cause a no‑start until the signal returns.

Does the crank angle sensor need routine replacement?
No—there’s no scheduled interval. It’s replaced on condition. During services, a quick visual of the connector and loom, and ensuring there are no fluid leaks onto the sensor, is all that’s usually required. If replacement is needed, it’s a short job for most workshops using an OEM‑equivalent part.