Parts for your 2011 Toyota Prius-Crank angle sensor

2011 Toyota Prius crank-angle-sensor (crankshaft position sensor)

Yes, the 2011 Toyota Prius (ZVW30, 2ZR-FXE engine) is fitted with a crank-angle-sensor, commonly called the crankshaft position (CKP) sensor. Toyota’s Technical Information System repair manual for the Prius lists DTCs P0335/P0339 for the CKP circuit and includes diagnostic procedures. The Prius Electrical Wiring Diagram shows the CKP sensor signal wired directly to the ECM, and Toyota’s electronic parts catalogue lists a dedicated crankshaft position sensor for the 2010–2015 Prius. Those technical sources confirm the sensor is present and relevant to the vehicle’s operation.

The crank-angle-sensor on a 2011 Prius does more than just tell the engine where top dead centre is. In hybrid duty, the ECM needs pinpoint crank position to fire up the 2ZR‑FXE smoothly whenever the hybrid system calls for it. The sensor reads a toothed wheel on the crankshaft and delivers a precise signal so the engine can start and run cleanly, keep timing spot-on, and coordinate with the electric motor without a hiccup.

It isn’t a routine “service item” like oil or filters, but it’s absolutely critical. If it plays up, the driver may notice intermittent no‑start, rough or shaky starts, sudden stalling at idle, or the engine failing to join in when the hybrid system requests it. The MIL may light with codes such as P0335 or P0339. Because the sensor is magnetic and lives in the timing cover at the lower front of the engine, it can attract fine metallic fuzz or cop a hard time from oil contamination if there’s a seep nearby.

Good workshop practice during servicing includes a quick look for wiring chafe, loose connectors, or oil weep around the sensor grommet/O‑ring. Don’t pressure‑wash connectors, and keep an eye on engine earths. If removal is needed—for inspection or replacement—disconnect the 12‑volt negative terminal, ensure the vehicle is IG‑OFF, and stay clear of orange high‑voltage components. Access is typically from underneath after removing the engine under cover. The sensor is held by a single bolt, replace the O‑ring, lightly oil it, seat the sensor squarely, and torque the bolt to the factory spec from the Toyota manual. Clear fault codes and confirm a clean start–stop cycle with a short road test.

When replacing, genuine or high‑quality aftermarket parts are the go. It’s a straightforward job for a competent technician, and getting it right means smooth hybrid transitions, better fuel economy, and fewer dramas down the road.

• Typical fault codes: P0335 (CKP “A” circuit), P0339 (CKP “A” circuit intermittent)
• Common symptoms: hard/no start, rough restart, stalling, MIL on, poor hybrid engagement

Popular questions about the 2011 Toyota Prius crank-angle-sensor

Where is the crank-angle-sensor located on a 2011 Prius?
It’s mounted through the timing chain cover at the lower front of the engine, aimed at a reluctor on the crankshaft. Most techs access it from underneath after removing the engine under cover. The wiring runs straight to the ECM, so check that harness for chafe or oil contamination when you’re under there.

Does the crank-angle-sensor need regular servicing?
Not as a scheduled item. During routine servicing, a visual check for leaks, connector damage, or debris is smart. If there are symptoms—hard starts, stalling, MIL with P0335/P0339—testing with a scan tool and oscilloscope is the next step. Replace the sensor if signals are out of spec or the fault returns after harness repairs.

Is it safe to replace the sensor at home?
It’s a simple bolt‑on part, but hybrid safety matters. Switch the car IG‑OFF, disconnect the 12‑volt negative terminal, and avoid orange high‑voltage components. If that feels outside the comfort zone, let a qualified technician handle it and verify timing signals with proper test gear.