Your Selected Vehicle
Parts for your 2021 Honda Cr-v-Camshaft sensor
Explore 4WD & Adventure
2021 Honda CR‑V Camshaft Sensor — What It Does and When to Service It
Based on Honda’s own service information for the 2021 CR‑V and mainstream OEM parts catalogues, the vehicle is fitted with a Camshaft Position (CMP) sensor. The Honda Service Information System (SIS) documents the CMP sensor in engine management for both petrol and hybrid powertrains, and standard OBD‑II fault codes such as P0340 and P0341 are specified for this component on the 2021 CR‑V.
The camshaft sensor is a small, clever bit of kit that helps the CR‑V’s powertrain control module know exactly where the camshaft is in its rotation. That timing info is critical for sequential fuel injection, ignition timing, and the variable valve timing system. In plain terms, it helps the engine start crisply, run smoothly, and deliver the right blend of power and fuel economy across Aussie and Kiwi roads.
When the sensor begins to drift or fail, the engine computer can no longer trust the cam timing signal. The result can be hard starting, rough idle, a noticeable flat spot on acceleration, and the check engine light lighting up. Fuel use can creep up, and the car may drop into a reduced‑power or “limp” strategy to protect itself.
Honda doesn’t list the camshaft sensor as a routine replacement item, so there’s no set kilometre interval to swap it out. That said, it’s smart to include a quick check during regular servicing:
- Scan for fault codes (especially P0340/P0341) if the check engine light’s on.
- Inspect the sensor connector and loom under the bonnet for oil contamination, brittle wiring, or damaged clips.
- If the rocker cover area is oily, clean it up so the sensor and plug aren’t bathed in grime.
Replacement is straightforward for a trained tech: disconnect the battery, remove any trims or the engine cover for access, unplug the connector, remove the retaining bolt, and pull the sensor straight out. A light smear of clean engine oil on the new O‑ring helps it seat, the bolt should be tightened to the spec in Honda’s service info. After refitting, clear codes and verify cam/crank synchronisation with a scan tool. Using a quality OEM‑spec sensor avoids headaches with signal quality and compatibility.
If the 2021 CR‑V is showing any of the tell‑tale signs below, it’s worth booking it in before a minor stumble turns into a no‑start:
- Extended cranking or stalling at idle
- Hesitation on take‑off and poor fuel economy
- Check engine light with related fault codes
Popular questions
Where is the camshaft sensor on a 2021 Honda CR‑V?
On most 2021 CR‑V engines, the camshaft sensor is mounted at the front or top of the cylinder head, reading a target on the camshaft. It’s typically beneath the engine cover, once that’s off, the sensor and its two‑pin or three‑pin connector are easy to spot. Access varies a bit by engine, but it’s designed for straightforward servicing.
Can you drive with a failing camshaft sensor?
It may still run, but it’s not a great idea. A dodgy signal can cause poor performance, higher fuel use, and unexpected stalling. The engine computer may default to a backup strategy, which hurts drivability. Best bet: have it scanned and repaired sooner rather than later to avoid getting stranded.
Do hybrid 2021 CR‑V models use a camshaft sensor too?
Yes. The hybrid’s petrol engine still needs precise cam timing feedback for correct starting, combustion, and valve timing. The control strategy is different from the pure petrol model, but the CMP sensor remains essential for reliable hybrid operation.
