Parts for your 2020 Subaru Xv-Crank angle sensor

2020 Subaru XV crank-angle-sensor: purpose, servicing and replacement

Based on Subaru’s factory service information (STIS) for the 2020 MY XV/Crosstrek with the FB20 engine, the model is fitted with a crankshaft position sensor—commonly called a crank angle sensor. This is also confirmed by the Subaru electronic parts catalogue and standard OBD-II diagnostics (DTCs P0335/P0336) documented in Subaru service manuals and Autodata/Haynes references. So yes, the 2020 Subaru XV uses a crank-angle sensor.

On the 2020 Subaru XV, the crank-angle sensor feeds the ECU precise information about crankshaft speed and position. Paired with the cam sensors, it lets the ECU fire the injectors and coils at exactly the right time, manage variable valve timing, and keep cold starts and hot restarts tidy. If the sensor signal goes missing or erratic, the ECU can’t confidently time spark and fuel—hello hard starts, intermittent stalling, misfires, or a dead engine with a flashing check light.

It’s not a routine replacement item in scheduled servicing, but it definitely benefits from a quick once-over when the bonnet’s up. A technician will usually:

• Inspect the sensor connector and harness for oil contamination, corrosion, or chafing.
• Check live data (RPM) and fault codes. P0335/P0336 are classic CKP flags.
• Confirm a clean signal if chasing intermittent cut-outs or random no-starts.

Replacement on the XV’s FB20 is straightforward for a trained tech: disconnect the battery, access the sensor on the engine block, unplug, remove the retaining bolt, swap the unit, and refit the connector. No complex recalibration is usually required, clear codes and perform an idle/drive relearn so the ECU trims settle. When choosing parts, genuine or high-quality OE-equivalent sensors are the safe bet—cheap units can cause phantom faults or hot-soak no-starts that’ll drive anyone spare.

Some practical tips for owners and workshops:

• If the tachometer drops to zero during a stall and cranking shows no RPM on a scan tool, suspect the crank-angle sensor or its wiring early.
• Oil leaks around the front of the engine can wick into connectors—fix the leak and clean the plug to avoid false triggers.
• If the XV has racked up big kilometres and shows intermittent start issues when hot, pre-emptive replacement can be sensible once testing points to the sensor.

Popular questions

Where is the crank-angle sensor on a 2020 Subaru XV?
On the FB20 engine it’s mounted to the engine block and reads a toothed trigger on the crankshaft. Access is typically from the front/top of the engine bay after removing the engine cover and intake ducting. Exact access steps can vary slightly by market trim, a workshop manual view makes it easy to spot.

What symptoms point to a failing crank-angle sensor?
Common giveaways include long crank/no start, sudden stalling (often when hot), misfires, rough idle, or the tacho dropping to zero while the engine cuts. The check engine light may set codes like P0335 or P0336. A scan tool showing zero RPM while cranking is a key clue.

Does the ECU need programming after sensor replacement?
Typically no programming is needed. Clear any stored codes, check live RPM, and complete an idle learn and short drive cycle so fuel trims stabilise. If issues persist, inspect wiring, grounds, and consider ECU updates per Subaru service information.