Parts for your 2006 Daihatsu Bego-Camshaft sensor

2006 Daihatsu Bego camshaft sensor: what it does and how to look after it

Technical sources confirm the 2006 Daihatsu Bego (J200/J210 series, 3SZ‑VE 1.5‑litre DOHC VVT‑i) uses a camshaft position sensor. The Daihatsu/Toyota workshop manuals for the J200 platform, the Electrical Wiring Diagram, and parts catalogues list a camshaft position sensor (CMP) for this engine, and the factory diagnostic charts include CMP-related DTCs such as P0340 and P0341. These references make it clear the sensor is fitted and integral to engine control and VVT‑i operation.

The camshaft sensor on a 2006 Bego is the quiet achiever behind smooth starts, crisp throttle response, and tidy fuel economy. Working with the crank sensor, it tells the ECU exactly which stroke each cylinder is on. That lets the ECU fire injectors sequentially, sync ignition timing, and command VVT‑i to phase the intake cam for torque and efficiency. If the CMP signal goes missing, the ECU can fall back to limp strategies, but owners will notice hard starting, rough idle, flat spots, or higher fuel use.

There’s no scheduled replacement for the camshaft sensor—it's a solid‑state part designed to last. As part of routine servicing, it’s worth checking for oil weep at the sensor O‑ring, making sure the connector is clean and the harness isn’t chafing near the timing cover. Good quality engine oil and timely changes also help, because dirty oil can upset VVT‑i behaviour and confuse diagnostics.

When faults pop up (often with a check engine light), scan tools commonly show P0340 or P0341. Before throwing parts at it, smart diagnosis includes a visual wiring check, confirming steady 5‑volt reference and ground at the plug, and verifying a clean cam signal (an auto‑sparky with a scope makes this easy). A failing crank sensor or stretched timing chain can mimic CMP faults, so ruling those out saves money.

Replacement is straightforward for most workshops and keen DIYers:

• Disconnect the battery and locate the sensor on the cylinder head near the timing cover.
• Unclip the connector, remove the retaining bolt, and ease the sensor out without nicking the O‑ring.
• Lightly oil a new O‑ring, seat the new sensor, and tighten the bolt to factory spec (typically around 8–10 N·m).
• Reconnect, clear codes, and confirm the live data shows a stable cam signal.

Genuine or high‑quality OEM‑equivalent (e.g., Denso) parts are the safe bet. Done right, the Bego’s cam sensor is fit‑and‑forget, keeping that 3SZ‑VE running sweet across Aussie and Kiwi kilometres.

Popular questions

Where is the camshaft sensor on a 2006 Daihatsu Bego?

On the 3SZ‑VE engine, the camshaft sensor sits on the cylinder head at the front of the engine, near the timing cover on the intake cam side. It’s held with a single small bolt and has a two- or three‑pin connector. Access is usually from the top once the engine cover is off.

What are the symptoms of a failing camshaft sensor on a Bego?

Common signs include longer cranking, rough idle, hesitation, reduced power, poorer fuel economy, and a check engine light with codes like P0340/P0341. In some cases VVT‑i operation is limited, so the engine can feel flat or unwilling to rev.

Can a camshaft sensor be cleaned, or does it need replacing?

If the connector is oily or dirty, a careful clean can restore a good signal. However, the sensor itself is a sealed electronic unit—if it’s internally faulty, replacement is the fix. Always check wiring integrity and timing condition before condemning the sensor.