Parts for your 2020 Toyota Vitz|yaris-Crank angle sensor

2020 Toyota Vitz/Yaris crank-angle sensor: what it does and how to look after it

Yes, the 2020 Toyota Vitz/Yaris runs a crank-angle sensor (commonly called the crankshaft position sensor, CKP). Toyota’s own service literature for the 2020 Yaris (MXPA/MXPH series) lists the crankshaft position sensor as part of the engine control system on the M15A-FKS/M15A-FXE and 1KR-FE engines, providing the ECM with the NE signal for crank angle and engine speed. Aftermarket technical databases used in workshops (e.g., Autodata and HaynesPro) also include diagnostic and replacement procedures for the 2020 Yaris CKP. In short, it’s a core bit of hardware on both petrol and hybrid variants.

On this Vitz/Yaris, the crank-angle sensor reads a toothed wheel on the crankshaft and tells the engine computer exactly where the pistons are and how fast the crank’s spinning. That timing data is the backbone for spark and fuel delivery, and it’s also used to sync with the cam sensor so the engine fires cleanly and efficiently. On hybrid models that start and stop the engine frequently, accurate crank-angle information is even more critical for smooth restarts and low emissions.

There’s no fixed replacement interval for the crank-angle sensor, it’s generally a fit-and-forget part. Still, a bit of care during routine servicing goes a long way:

• Keep an eye out for oil leaks at the front cover or bellhousing area that could contaminate the sensor or its connector.
• Check the wiring loom and plug for chafing, corrosion, or water ingress, especially after off-road or flood exposure.
• If the MIL illuminates and the engine shows hard starting, random stalling, misfires, or rough running, scan for codes such as P0335–P0339 and inspect the CKP circuit before swapping parts.

When replacement is needed, use quality OEM-equivalent parts. The sensor is typically mounted to the engine block or timing cover facing the crank trigger wheel. Replacement is straightforward for a trained tech: disconnect the battery, unplug the connector, remove the retaining bolt, and withdraw the sensor. Lightly oil a new O-ring if fitted, seat the sensor squarely, tighten the fastener to the spec in the Toyota manual, reconnect, clear any DTCs, and road test. No special relearn is usually required, the ECM adapts automatically, but it’s good practice to let the engine idle to stabilise fuel trims after the job.

Look after the basics—clean connections, sound wiring, and no oil contamination—and the crank-angle sensor on a 2020 Vitz/Yaris will generally deliver years of drama-free service.

Popular questions

Where is the crank-angle sensor on a 2020 Yaris?
It’s bolted to the engine so it can read the crankshaft’s trigger wheel. On the M15A engines it’s typically on the timing cover at the front of the engine, on some 1.0L variants it may sit low on the block near the crank pulley or at the bellhousing area. The exact position varies by engine code, so checking the service manual or an under-bonnet inspection is best.

What fault codes point to a crank-angle sensor issue?
Common codes include P0335, P0336, P0337, P0338, and P0339. These can be triggered by a failing sensor, damaged wiring, poor connector contact, or in rare cases a damaged trigger wheel. Always test the circuit before replacing the sensor.

Does the 2020 Yaris have both crank and cam sensors?
Yes. The engine control module uses both the crank-angle (CKP) and camshaft position (CMP) sensors for precise ignition and fuel timing. Losing either signal can cause hard starting, limp mode, or stalling.