Parts for your 2024 Toyota Aqua-Crank angle sensor

2024 Toyota Aqua crank angle sensor: what it does, where it fits, and how to look after it

Yes, the 2024 Toyota Aqua does use a crank angle sensor (also called the crankshaft position sensor). Toyota’s technical literature for the Aqua’s M15A‑FXE 1.5‑litre Dynamic Force hybrid engine—specifically the Repair Manual (Engine/Hybrid Control), Electrical Wiring Diagram (EWD) and New Car Features (NCF)—identifies and tests the CKP circuit, and includes related DTCs such as P0335 and P0336. That confirms the sensor is fitted and essential to engine control on this hybrid.

On this model, the crank angle sensor tracks the exact position and speed of the crankshaft by reading a toothed wheel on the crank. The Hybrid ECU and Engine ECU use that signal to time fuel injection and spark, synchronise smooth engine start/stop, and monitor for misfires. Even though the Aqua can glide on electric power, the engine still cuts in and out frequently, without a clean CKP signal, starts are clunky, timing goes off, and fuel economy tanks.

It’s a small, sealed, no-service item, so there’s no routine replacement interval. As part of regular servicing, workshops typically:

• Scan for fault codes (P0335/P0336), check live RPM during cranking/engine start events, and confirm cam/crank sync.
• Inspect the sensor connector and loom for oil contamination, heat damage, or loose pins, and check for nearby oil leaks.
• Make sure the engine earths are sound and battery voltage is healthy—hybrid systems still rely on solid 12‑volt supply for engine management.

Signs the Aqua’s crank angle sensor or its wiring may be unhappy include a MIL/hybrid warning, engine failing to start when requested by the system, rough idle after starts, sudden stalling, or poor fuel use. Because the hybrid doesn’t “crank” in the old-school way, owners may simply notice the engine refusing to join in or cutting out unexpectedly.

Replacement is straightforward for a trained tech: disconnect the 12‑volt negative terminal, allow the engine to cool, unplug the sensor, remove the hold‑down bolt, and swap the unit. A new O‑ring should be lightly oiled, the bolt must be torqued to spec from the Toyota Repair Manual. After refitting, clear codes and confirm the ECU sees a stable RPM and proper cam/crank correlation. Genuine or high‑quality aftermarket sensors are recommended—cheap copies can cause intermittent sync faults that are maddening to trace.

There’s usually no special relearn, the Aqua’s ECU will adapt on the next drive cycle. If a CKP code returns, wiring integrity and the reluctor wheel should be checked per the manual’s test plan.

Popular questions

Does the 2024 Aqua actually have a crank angle sensor?
Yes. Toyota’s Repair Manual, EWD and New Car Features documents for the M15A‑FXE list a Crankshaft Position Sensor and the related diagnostics (e.g., P0335/P0336). It’s required for precise ignition/fuel timing and smooth hybrid engine start/stop.

How often should the crank angle sensor be replaced?
There’s no scheduled interval. It’s replaced on condition—typically when fault codes, starting issues, or sync errors appear. Routine servicing focuses on scanning for codes and inspecting the connector and harness rather than proactive replacement.

Can the sensor be changed at home?
It’s a simple bolt-in part, but best left to those comfortable working on late‑model hybrids. The 12‑volt battery must be disconnected, and the sensor needs correct torque and sealing. A scan tool helps verify the fix by checking live RPM and clearing codes.