Parts for your 2012 Subaru Xv-Crank angle sensor

2012 Subaru XV crank-angle-sensor (crankshaft position sensor)

Yes, the 2012 Subaru XV is fitted with a crank-angle-sensor, more commonly called the crankshaft position sensor (CKP) in Subaru documentation. Technical sources that confirm this include the Subaru 2012MY Impreza/XV (FB20) Service Manual engine diagnostics, which details testing and signal specs for the CKP, and the Subaru genuine parts catalogue for GP-series XV/Impreza models, which lists the crankshaft position sensor under engine electrical. OBD-II standards (SAE J1979) also associate DTCs P0335/P0336 with this sensor on the FB20 engine.

On the 2012 Subaru XV, the crank-angle-sensor keeps the engine’s timing bang-on. It reads a toothed reluctor on the crankshaft and feeds precise angle and speed data to the ECU, so fuel injection and spark happen exactly when they should. That accuracy helps cold starts, smooth idle, power delivery, and fuel economy. If the signal goes missing or erratic, the ECU can’t reliably fire the plugs or injectors, which is why a dodgy CKP can cause a no-start or random stalling.

It’s not a routine maintenance item, but it does live in a hot, vibrating spot and can age over high kilometres. As part of regular servicing, it’s smart to check the wiring loom and connector for oil contamination, broken clips, or green corrosion, and to make sure the harness isn’t rubbing on the front cover. If the check engine light pops on with codes like P0335 or P0336, or the XV has hard starting, misfires at low rpm, or sudden cut-outs, the CKP is high on the shortlist.

• Common symptoms: long crank/no start, intermittent stall, rough idle, poor economy, MIL on with P0335/P0336.
• Quick checks: inspect connector seating, look for oil leaks around the front cover, and verify harness routing and clip condition.
• Scan-tool tip: view live RPM during cranking, if it reads zero, the CKP signal may be missing.

Replacement on the FB20 is straightforward for a competent tech: disconnect the battery, unplug the sensor, remove the retaining bolt, swap in the new unit, and reconnect. No fancy relearn is typically required on Subaru ECUs—clear the codes, then road test whilst watching live data. Using a genuine or high-quality aftermarket sensor is worth it, poor-quality units can give weak signals and come straight back as a comeback. If the sensor keeps failing, check for underlying issues such as oil wicking into the loom, damaged reluctor teeth, or excessive crank end play.

Keeping the CKP and its wiring in good nick helps the XV start first time, run smoothly, and avoid surprise breakdowns under the bonnet.

Popular questions about the 2012 Subaru XV crank-angle-sensor

Where is the crank-angle-sensor located on a 2012 Subaru XV?
On FB-series engines used in the 2012 XV, the crankshaft position sensor is mounted to the front of the engine near the timing chain cover, reading a reluctor on the crank. It’s accessible from the front of the engine bay with the undertray and some covers out of the way.

Do I need to replace the CKP as preventative maintenance?
Not usually. It’s a fit-and-forget part until symptoms show. During routine servicing, a quick visual of the connector and wiring is enough. Replace the sensor if you have relevant fault codes or symptoms like hard starting or stalls.

Will a faulty CKP damage the engine?
A failed CKP typically stops the engine from starting or causes it to stall, but it doesn’t directly harm internal components. That said, sudden loss of power can be unsafe, so it’s best to diagnose and repair promptly.