Parts for your 2023 Subaru Impreza-Crank angle sensor

2023 Subaru Impreza crank angle sensor (crankshaft position sensor)

Yes, the 2023 Subaru Impreza is fitted with a crank angle sensor, more commonly called a crankshaft position (CKP) sensor. This is confirmed in Subaru technical sources, including the Subaru Technical Information System (service manual for the FB-series 2.0L engine used in 2017–2023 Impreza) which details CKP sensor diagnostics and OBD-II codes (P0335–P0339), and the Subaru Genuine Parts catalogue, which lists a crankshaft position sensor for this model and engine family. So, it’s absolutely relevant to the 2023 Impreza’s engine management.

What does it do? The crank angle sensor reads the exact position and rotational speed of the crankshaft via a toothed reluctor on the crank. That signal lets the ECU time fuel injection and ignition spark to the millisecond. Without a clean signal, the engine can be hard to start, run rough, or stall. On the FB20 engine, the sensor is a small, sealed electronic pickup mounted at the front of the engine near the crank pulley area, designed to be maintenance-free.

There’s no routine replacement interval in normal servicing for the CKP sensor. It’s a “replace on fault” item. That said, if the Impreza shows a crank sensor-related code or symptoms, a quick check under the bonnet can save headaches. Look for secure connectors, intact wiring looms, and no oil contamination at the sensor boss. If it’s been through a deep puddle or had recent front-end service, make sure the plug hasn’t been disturbed.

• Typical signs of trouble: intermittent no-start, sudden stalling when hot, misfires at low speed, tachometer dropouts, poor fuel economy, and the check engine light with codes like P0335/P0336.
• Basic care: keep the area around the front of the engine clean, avoid tugging on the harness during belt or radiator work, and fix any oil leaks promptly so they don’t wick into connectors.

When replacement is needed, it’s a straightforward job for a competent tech: battery disconnected, access under the front of the engine, unplug the connector, one retaining bolt out, sensor swapped, and torque set to spec. Using a genuine or high-quality OEM-equivalent sensor is worth it, as signal quality matters for smooth running. After fitting, clear codes and check live data for a steady crank signal. Most workshops will wrap it up with a quick road test to confirm crisp starts and stable idle. Easy as.

Popular questions

Where is the crank angle sensor on a 2023 Subaru Impreza?
It’s mounted at the front of the engine, reading a toothed wheel on the crankshaft. Access is typically from above or below near the crank pulley area. The connector runs into the engine harness just behind the radiator area.

This location helps the sensor get a clean, direct read on crank position while keeping the wiring short and well shielded.

What are the symptoms of a failing crank angle sensor?
Common signs include intermittent no-start, sudden stalling after warm-up, erratic idle, misfires, and the check engine light with faults like P0335 or P0336. The tachometer may momentarily drop to zero if the signal cuts out.

If those show up, a scan with live data to watch RPM during cranking is a good next step, followed by checking the connector and wiring before replacing the sensor.

Does the crank angle sensor need regular servicing?
No regular servicing is required. It’s sealed and designed to last the life of the vehicle. It’s only replaced if it fails or is damaged.

As part of routine servicing, a quick visual once-over for wiring condition and connector security is plenty. Keep the area clean and address any oil seepage that might migrate into the plug.