Parts for your 2020 Honda Civic-Crank angle sensor

2020 Honda Civic crank-angle sensor (crankshaft position sensor) — what it does and how to look after it

Yes, the 2020 Honda Civic does use a crank‑angle sensor, more commonly called the crankshaft position (CKP) sensor. This is documented in Honda’s factory service information for the 10th‑gen Civic (2016–2021) under the PGM‑FI/Engine Control section covering CKP sensor inspection and removal/installation, and by the model’s OBD‑II diagnostics that include CKP‑related DTCs such as P0335/P0336. Honda’s parts catalogues for the 2020 Civic engines (1.5‑litre L15B and 2.0‑litre K20C2) also list a dedicated CKP sensor.

On a 2020 Civic, the crank‑angle sensor tracks the exact rotational position and speed of the crankshaft. The engine control unit relies on that live signal to time fuel injection and spark precisely, sync with the cam sensor for accurate phasing, and monitor for misfires. If that signal drops out or goes skew‑whiff, the Civic can be hard to start, run roughly, stall at idle, or light the check‑engine lamp.

There’s no scheduled replacement interval for the CKP on this model, it’s a fit‑and‑forget part that’s typically only replaced on fault. As part of routine servicing, a quick visual once‑over is smart: check the wiring under the bonnet for chafing, oil wicking into the connector, or a damaged plug lock. Keeping the area clean and dry helps prevent false readings caused by poor connections or contamination on the sensor tip.

If replacement is needed, stick with a genuine‑quality sensor to avoid erratic signals. The job is straightforward for a competent home spanner‑spinner, but access varies by engine, always follow the factory procedure. Usual best practice is to disconnect the battery, let the engine cool, ease out the retaining fastener, swap the O‑ring if equipped, and seat the new sensor squarely. After refit, clear any stored DTCs and perform an idle learn with a proper scan tool if requested by the service manual. If a code returns (e.g., P0335/P0336), check the harness and the trigger wheel rather than assuming the new sensor is crook.

• Common signs of trouble: extended cranking, intermittent stalling, poor fuel economy, tachometer dropouts, and the MIL on with CKP‑related codes.
• Good habits: fix oil leaks promptly, ensure connectors click home firmly, and avoid tugging on the loom when working nearby.

Technical sources referenced: Honda Civic (2016–2021) Factory Service Manual PGM‑FI/CKP sensor diagnostics and R&I, Honda OBD‑II DTC lists for 2020 Civic (P0335, P0336), Honda electronic parts catalogues listing the CKP sensor for L15B/K20C2 engines.

Popular questions

What are the symptoms of a failing crank‑angle sensor on a 2020 Civic?
Owners may notice longer cranking, sudden stalling when warm, rough idle, flat spots on acceleration, or the check‑engine lamp with codes like P0335/P0336. Because the CKP signal controls spark and injection timing, any dropout can feel like the engine briefly “cuts out”.

Does the crank‑angle sensor need preventative replacement?
No. It isn’t a scheduled service item. Replace only if it’s faulty or contaminated, or if diagnostics point to a bad signal or wiring. During regular services, a quick visual inspection of the connector and loom is all that’s needed.

Is it safe to drive with a dodgy CKP sensor?
It may run, but it can stall or fail to restart without warning, which isn’t ideal on Kiwi or Aussie roads. If the MIL is on with CKP‑related codes or symptoms are present, minimise driving and get proper diagnostics and repair sorted promptly.