Parts for your 2017 Toyota C-hr-Crank angle sensor

2017 Toyota C‑HR crank angle sensor: purpose, servicing and replacement

Based on Toyota’s factory service information and parts catalogues for the 2017 C‑HR (including the 1.2‑litre 8NR‑FTS turbo and the 1.8‑litre 2ZR‑FXE hybrid), this model is equipped with a crankshaft position sensor, commonly called a crank angle sensor. Toyota’s repair manual lists diagnostics such as DTC P0335/P0339 for this sensor on these engines, and the Toyota Electronic Parts Catalogue shows a dedicated crankshaft position sensor for the C‑HR powertrains. So yes, the 2017 Toyota C‑HR does use a crank angle sensor, and it’s essential to how the engine runs.

The crank angle sensor tells the engine control module exactly where the crankshaft is in its rotation and how fast it’s spinning. That timing info lets the C‑HR fire injectors and ignition coils precisely, manage turbo boost and VVTi on the 8NR‑FTS, and sync the hybrid system on the 2ZR‑FXE. If the signal goes missing or noisy, the engine can stumble, crank longer, lose power or not start at all, and the check engine light will usually log a code.

There’s no scheduled replacement interval for the C‑HR’s crank angle sensor, it’s a service‑as‑required item. During routine servicing, it’s wise to:

• Scan for pending and stored fault codes (look out for P0335, P0339 and related cam/crank correlation codes).
• Inspect the sensor harness and connector for chafing, oil contamination or a loose fit.
• Check for engine oil leaks near the front/rear of the block that could seep onto the sensor or trigger wheel.

If replacement is needed, a competent tech will disconnect the battery, access the sensor at the engine block (location varies slightly by engine), unclip the connector, remove the retaining bolt, swap in a quality OEM‑equivalent sensor with a new O‑ring, and torque it to spec. On these Toyotas, no special programming is typically required, after installation, clear codes, verify live data (stable RPM and synced cam/crank) and road‑test. Always rule out wiring faults or reluctor ring damage before condemning the sensor.

Handy tips for owners:

1. Use the correct engine oil grade and fix leaks promptly—oil‑soaked connectors can upset sensor signals.
2. If the engine cranks but won’t start intermittently, get it scanned early, a weak crank angle sensor can fail hot.
3. Stick with genuine or reputable aftermarket sensors, poor tolerances can cause misreads and repeat faults.

Popular questions

Where is the crank angle sensor on a 2017 Toyota C‑HR?

On the 1.2‑litre turbo (8NR‑FTS), the sensor is mounted low on the engine block near the crankshaft, accessed from the front or side of the engine bay. On the 1.8 hybrid (2ZR‑FXE), it’s similarly positioned at the block with access from below or via the RH wheel arch liner. Exact access steps vary, so a workshop manual or lift makes life easier.

What are the symptoms of a failing crank angle sensor on this model?

Common signs include extended cranking, stalling, rough running, sudden loss of power, and the MIL illuminating with codes like P0335/P0339. Sometimes it plays up when hot and recovers when cool. If ignored, it can lead to a no‑start.

Does a new crank angle sensor need programming on the C‑HR?

Generally no. Fit the sensor, ensure the connector and wiring are sound, clear the codes and confirm stable RPM and cam/crank sync in live data. If codes return, recheck wiring, sensor seating and the crank reluctor ring before considering ECU issues.