Parts for your 2007 Honda Stream-Camshaft sensor

2007 Honda Stream camshaft sensor: what it does and when to sort it

Yes, the 2007 Honda Stream does use a camshaft position (CMP) sensor, and it’s absolutely relevant to how the engine runs. This is documented in Honda’s factory Service Manual for the RN6–RN9 Stream (Engine Electrical: Camshaft Position Sensor inspection and replacement) and reflected in Honda’s Electronic Parts Catalogue, which lists a CMP sensor fitted to both the R18A 1.8 i‑VTEC and R20A 2.0 i‑VTEC engines. Honda’s DTC reference tables for these engines also include CMP-related fault codes such as P0340, P0341 and P0343, confirming it’s a monitored component.

On the 2007 Stream, the CMP sensor sits on the cylinder head near the intake cam and watches a trigger on the camshaft. It works with the crank sensor to keep the engine timed spot‑on for sequential fuel injection, spark timing and i‑VTEC/VTC control. If it goes out of whack, the engine can start poorly, idle rough, feel flat, or throw a check‑engine light.

There’s no scheduled maintenance for the sensor itself, but it’s smart to check it during a service if the Stream has had oil leaks up top or wiring issues under the bonnet. The sensor uses an O‑ring to seal, if oil traces are found at the connector, replace the O‑ring when refitting. Keep the connector clean and clipped firmly—dodgy connections are a common culprit.

• Typical symptoms of a crook cam sensor: long crank/no start, misfires, surging, poor fuel economy, and fault codes P0340/P0341/P0343.
• Basic replacement tips: disconnect the battery, remove the engine cover, unplug the 3‑pin connector, undo the single retaining bolt (Honda specs are around 9 N·m—always verify in the service manual), swap the O‑ring, lightly oil it, and refit. Don’t force or pry on the plastic body.
• After replacement, clear codes and check CMP/CKP synchronisation with a scan tool. If the code returns, inspect the harness and confirm timing hasn’t jumped.

Quality matters here. A genuine or OE‑quality sensor avoids intermittent faults that cheap units can introduce. For Streams running the R18A or R20A, fitment is straightforward under the engine cover, and most home mechanics with a basic socket set and a calm cuppa can manage the job in under an hour.

FAQs

Where is the camshaft sensor on a 2007 Honda Stream?
It’s mounted on the cylinder head by the intake camshaft, under the plastic engine cover. Look for a small sensor secured with one 10 mm bolt and a 3‑pin connector.

What fault codes point to a bad camshaft sensor?
Common Honda codes are P0340 (CMP circuit), P0341 (CMP range/performance) and P0343 (CMP high input). You may also see related misfire codes if timing sync is off.

Is it safe to drive with a failing camshaft sensor?
It might still run, but starting can be unreliable and performance can drop. There’s a risk it stalls or won’t restart, so it’s best to sort it sooner rather than later.