Parts for your 2015 Daihatsu Bego-Camshaft sensor

2015 Daihatsu Bego Camshaft Sensor — Purpose, Care and When to Swap It

For the 2015 Daihatsu Bego (the Toyota Rush/Terios twin with the 1.5‑litre 3SZ‑VE engine), a camshaft position sensor is absolutely fitted and used. Technical references including the Daihatsu/Terios J200‑series workshop manual and Toyota New Car Features documentation note the ECM relies on a camshaft position sensor (often labelled “G2”) on the cylinder head for phase detection, sequential injection, and VVT‑i control. Without it, the engine management can’t properly time fuel and spark.

On this Bego, the camshaft sensor keeps the engine in sync, telling the ECU exactly where the intake cam is so it can fire injectors at the right moment, adjust VVT‑i, and ensure clean starts. When it plays up, drivers may notice longer cranking, a lumpy idle, flat spots under load, and a Check Engine light. It’s common to see fault codes like P0340 or P0341 if the signal is missing or erratic.

There’s no set replacement interval because the sensor is solid‑state, but it pays to check it during routine servicing. Under the bonnet, look for oil weeping at the sensor’s O‑ring, brittle wiring near the plug, or corrosion on the terminals. Oil contamination or a damaged connector can upset the signal just as much as a failed sensor.

If replacement’s on the cards, it’s a straightforward job many workshops turn around quickly. Disconnect the battery, unplug the 3‑pin connector, remove the retaining bolt, and ease the sensor out of the head. Lightly oil the new O‑ring, seat the new sensor squarely, refit the bolt to the correct snug torque, reconnect the plug, then clear any DTCs and confirm live data shows a stable cam signal. A brief idle relearn after battery reconnection is a smart move.

Good practice during servicing includes:

• Scanning for stored or pending cam/crank correlation codes and checking live data for cam angle stability.
• Inspecting loom routing near the timing cover for rub‑throughs and heat damage.
• Using quality, OE‑equivalent sensors, cheap copies can introduce noisy signals and fresh headaches.

Keeping the camshaft sensor healthy helps fuel economy, keeps emissions tidy, and makes sure the Bego starts first turn on chilly mornings across Aus and NZ.

Where is the camshaft sensor on a 2015 Daihatsu Bego?

It’s mounted on the cylinder head near the timing chain cover on the intake side, held by a single small bolt with a 3‑pin connector. Access is from the top of the engine bay, so most checks and replacements are quick with basic hand tools.

What fault codes point to a camshaft sensor issue on this model?

Common engine codes are P0340 (Camshaft Position Sensor Circuit) and P0341 (Camshaft Position Sensor Range/Performance). You might also see VVT‑related codes if the ECU can’t accurately phase the cam. Always confirm with live data and wiring checks before swapping parts.

Can the Bego run with a failed camshaft sensor?

Sometimes it may crank longer, stumble, or not start at all. Even if it starts, it can drop into a reduced‑performance strategy with poor fuel economy. It’s best to diagnose promptly and restore a clean cam signal to protect drivability and emissions.