Parts for your 2016 Subaru Forester-Crank angle sensor

2016 Subaru Forester crank angle sensor (crankshaft position sensor)

Yes, the 2016 Subaru Forester is fitted with a crank angle sensor, more commonly called the crankshaft position sensor (CKP). Subaru’s 2016MY Forester factory service manual (Engine Diagnostics) lists DTCs P0335–P0339 for this sensor, and Subaru’s parts catalogues as well as major technical catalogues from NGK/NTK and Bosch show a dedicated CKP for FB25 and FA20 engines used in this model year. It’s a key input the ECU relies on for spark and fuel timing, sync with the cam sensors, and accurate engine speed.

On the petrol Forester (FB25 2.5i and FA20 2.0 XT), the CKP sits at the front of the engine, reading a toothed wheel on the crank. It’s a solid-state magnetic/Hall-type sensor that watches each tooth as it goes by, letting the ECU know exactly where the pistons are. If that signal goes missing or messy, you’ll get hard starting, stalling, uneven idle, and fault codes. On some diesel variants, the sensor location can be by the flywheel housing, but the job it does is the same.

As a servicing item, the crank angle sensor isn’t something that’s replaced on a schedule. It’s typically “fit and forget” until it shows faults. That said, a bit of preventative care helps. During routine services, it’s worth casting an eye over the wiring and connector for oil contamination, brittle insulation, or a loose clip. If the front timing cover has seepage, sort that before it wicks oil into connectors.

When replacement is needed, it’s a straightforward job for a competent tech. Disconnect the battery, gain access (often removing the intake duct or airbox makes life easier), unplug the connector, remove the retaining bolt, and pull the sensor straight out. Lightly lubricate the new O-ring, seat the new sensor cleanly, torque the bolt to spec, reconnect and clear codes. A quick road test and, if applicable, an idle relearn via scan tool will have it sweet-as.

• Common symptoms: long crank/no start, random stall, rough idle, misfire at low rpm, speedo/idle fluctuation, and DTCs like P0335.
• Checks before condemning: verify battery health, inspect CKP harness for rub-through, confirm clean sensor face and correct air gap, and compare live data for cam/crank sync.
• Parts tip: Stick with genuine or quality OEM-equivalent sensors, cheapies can give flaky signals when hot.

Popular questions about the 2016 Subaru Forester crank angle sensor

Where is the crank angle sensor on a 2016 Forester?

On petrol FB25 and FA20 engines, it’s mounted at the front of the engine block near the crank pulley, aimed at a toothed reluctor on the crankshaft. On some diesel variants, it may be positioned near the flywheel bellhousing. A torch from the front right of the bay usually spots it.

Do crank angle sensors need regular replacement?

No, there’s no routine replacement interval. They’re replaced on condition. During services, just check the connector and wiring for damage or oil intrusion, and address any DTCs like P0335 promptly to avoid no-start dramas.

What symptoms point to a failing crank angle sensor?

Hard starting, intermittent stalling, rough idle, misfires at low rpm, or sudden engine cut-outs when hot. The check engine light may be on with codes such as P0335–P0339. If those show up, proper diagnosis with a scan tool and wiring inspection is the next step.