Parts for your 2011 Daihatsu Bego-Camshaft sensor

2011 Daihatsu Bego camshaft sensor — what it does and when to replace it

Yes, the 2011 Daihatsu Bego is fitted with a camshaft position sensor. Technical sources including the Daihatsu J200/J210 Series Service Manual (Engine Control – EFI for the 3SZ‑VE), the Toyota Rush J200E/J210E Repair Manual, and the Daihatsu Electronic Parts Catalogue all specify a camshaft position sensor (CMP) on the 3SZ‑VE engine used in this model. It’s integral to sequential fuel injection and VVT‑i control.

On this Bego, the camshaft sensor keeps the engine computer in the loop about the exact position of the camshaft, so it knows which cylinder is on its compression stroke. Working alongside the crank sensor, it lets the ECU time fuel injection precisely and manage VVT‑i cam phasing for smooth torque and decent fuel economy. If the sensor signal goes missing, the ECU may fall back to a crude backup strategy, which means long cranks, rough running and a glowing check‑engine light.

Typical symptoms of a crook camshaft sensor include hard starting when hot, hesitation, a lumpy idle, poor fuel use, and intermittent stalling. Common fault codes are P0340 and P0341. A scan tool will often show no cam sync or erratic cam angle feedback under those conditions.

Replacement isn’t on a fixed service schedule — it’s a replace‑when‑faulty item — but a smart service of a 2011 Bego will include a quick visual check of the sensor and harness. Look for brittle wiring, oil contamination in the connector and a leaking O‑ring at the sensor body. Keeping oil changes on time helps prevent varnish and sludge that can upset sensor readings and VVT‑i operation.

When it’s time to swap the sensor, use quality OEM or reputable aftermarket. The unit is mounted on the cylinder head near the timing chain end and is held by a single bolt. Typical driveway steps:

• Disconnect the negative battery terminal.
• Unplug the sensor connector and remove the retaining bolt.
• Gently twist and withdraw the sensor, catching the O‑ring.
• Lightly oil the new O‑ring, install the new sensor, and tighten to factory torque.
• Reconnect, clear fault codes, and confirm cam sync with a scan tool on a warm engine.

If faults return, check power/earth at the connector, inspect the timing chain and cam phaser for wear, and verify the trigger wheel isn’t damaged. Most 3SZ‑VE vehicles won’t need ECU programming after replacement — a code clear and a short drive cycle usually sort it.

FAQs

Does the 2011 Daihatsu Bego have a camshaft sensor?
Yes. The 3SZ‑VE engine in the Bego/Rush platform uses a camshaft position sensor for sequential fuel injection and VVT‑i control, as outlined in the Daihatsu J200/J210 service information and parts catalogue.

Where is the camshaft sensor on a 2011 Bego?
It’s fitted to the cylinder head on the timing chain side, with a single retaining bolt and a 3‑pin connector. Access is straightforward with basic hand tools and usually takes under an hour.

Is it safe to drive with a failing camshaft sensor?
The engine may still run, but it can be hard to start, run rough and stall unexpectedly. It’s best to diagnose and replace the sensor promptly to avoid getting stranded and to protect the catalytic converter from misfire.