Parts for your 2004 Honda Stream-Camshaft sensor

2004 Honda Stream camshaft-sensor: fitted, what it does, and how to look after it

It’s relevant and it’s used. Technical sources including the Honda Stream RN1–RN5 Workshop Manual (Engine Electrical—Camshaft Position (CMP) Sensor procedures), Honda’s Electronic Parts Catalogue for RN1/RN3/RN4/RN5, and Honda i‑VTEC technical training materials confirm that all 2004 Honda Stream variants—whether the 1.7‑litre D17A or the 2.0‑litre K‑series i‑VTEC—are equipped with a camshaft position sensor. These references outline CMP signal checks, removal/installation, and ECU reliance on the sensor for timing, fuelling, and variable valve timing control.

On a 2004 Honda Stream, the camshaft-sensor is the ECU’s eyes on the camshaft. It tells the computer exactly where the cam is in its rotation so the engine can fire injectors sequentially, spark at the right moment, and (on K‑series i‑VTEC) phase the cam with VTC for smooth torque and better fuel economy. The D17A uses the CMP for quick start‑up, misfire detection, and precise fuelling, the K‑series leans on it even more to manage cam timing changes under load. When the signal goes missing or messy, you’ll often see hard starting, rough idle, flat spots, limp mode, or a check engine light with codes like P0340/P0341.

There’s no set service interval for a camshaft-sensor—it's a solid‑state unit—so it’s more a “inspect when servicing” item. Good servicing practice on a 2004‑Honda‑Stream camshaft-sensor includes:

• Scanning for fault codes at routine services, especially if there are intermittent start or hesitation complaints.
• Checking the connector and wiring under the bonnet for oil wicking, brittle insulation, or loose pins.
• Looking for rocker cover oil leaks that can track onto the sensor, replace the sensor O‑ring if there’s seepage.

Replacement is straightforward for a competent DIYer: disconnect the battery, unplug the sensor, remove the hold‑down bolt, swap the sensor, lightly oil the new O‑ring, and refit. Tighten the bolt to the workshop manual spec and clip the loom back so it can’t rub. Use a quality OEM or reputable aftermarket sensor—cheap copies can cause random misfires or poor hot restarts. Most shops will have it done in 15–30 minutes, and it’s worth clearing codes and doing a short road test to confirm clean data. For owners who clock up lots of kilometres or tow, keeping the top of the engine clean and dry helps the sensor live a long, drama‑free life.

Popular questions about 2004‑Honda‑Stream camshaft-sensor

Where is the camshaft-sensor on a 2004 Honda Stream?
On the 1.7 D17A it’s mounted at the end of the camshaft on the cylinder head. On the 2.0 K‑series, it’s at the front of the head near the cam gears. It’s a small, single‑bolt sensor with a two or three‑pin plug, easy to spot with the engine cover off.

What are the common symptoms of a failing camshaft-sensor?
Typical signs include long crank times, uneven idle, hesitation on take‑off, poorer fuel economy, and a check engine light (often P0340/P0341). If the signal drops out completely, the engine may crank but not start.

Can a camshaft-sensor be cleaned or should it be replaced?
If the issue is light oil contamination on the tip or a loose connector, a gentle clean and harness repair can restore normal operation. If the sensor has internal failure or throws repeat codes after checks, replacement is the fix.