Parts for your 2006 Daihatsu Bego-Crank angle sensor

2006 Daihatsu Bego crank-angle sensor (crankshaft position sensor): purpose, faults and servicing tips

Yes — the 2006 Daihatsu Bego is fitted with a crank-angle sensor, more commonly called the crankshaft position (CKP) sensor. Technical sources including the Daihatsu Terios/Bego (J200 series) factory repair information and Toyota Rush service manuals for the shared 3SZ‑VE 1.5L petrol engine specify a CKP sensor mounted at the front of the engine reading a toothed reluctor on the crank. These manuals also describe diagnostics for OBD‑II codes such as P0335/P0339 (Crankshaft Position Sensor “A”), confirming the part’s presence and role in engine management.

On this model, the crank-angle sensor tells the ECU exactly where the crank is in its rotation and how fast it’s spinning. That timing data is the backbone for spark timing, fuel injection sequencing, and engine synchronisation with the cam sensors. If it goes out of whack, you’ll cop hard starting, random stalling, a misfire under load, or a complete no-start. The tacho may drop to zero during a stall, and the check engine light often stores a CKP-related fault.

It’s not a scheduled replacement item, but it does benefit from a quick check during routine servicing. Oil leaks at the front of the engine can contaminate the connector, so it pays to eyeball the wiring harness under the bonnet, make sure the plug is clean and pinned snugly, and fix any seep from the timing cover or oil pump area. Electrical contact cleaner and a gentle wipe can sort light grime. If the sensor is physically damaged, moisture-soaked, or throwing repeat fault codes, replacement is the go-to.

DIY-friendly? Usually. After disconnecting the battery, the sensor is typically accessed low at the front of the block near the crank pulley/oil pump. It’s held by a small bolt and sealed with an O‑ring. Swap it like-for-like, lightly oil the new O‑ring, seat it square, and tighten the fastener to factory spec (refer to the service manual for torque). Clear codes with a scan tool and confirm a clean crank signal on live data. If the Bego still cranks long or stalls when hot, inspect the loom for rubbing, poor grounds, or heat damage.

• Common symptoms: hard start, intermittent stall, no-start, rough idle, poor fuel economy, CEL with P0335/P0339.
• Good practice: inspect connector and loom each service, keep oil leaks in check, and use quality OEM-equivalent sensors.

Popular questions

Where is the crank-angle (crankshaft position) sensor on a 2006 Daihatsu Bego?

It’s mounted low at the front of the engine, adjacent to the crank pulley/oil pump area, reading a toothed wheel on the crankshaft. Access is typically from the front of the engine bay, on some cars, raising the front or removing a splash shield gives better reach.

Does the crank-angle sensor need routine replacement?

No. It isn’t a consumable, so it’s replaced on condition. During regular servicing, check for oil contamination, brittle wiring, or stored fault codes. If symptoms like stalling or no-start appear and diagnostics point to the CKP, replacement is appropriate.

What faults mimic a bad crank-angle sensor?

Look-alike issues include a failing cam sensor, weak battery or starter causing slow cranking, corroded ECU grounds, chafed wiring near the front of the engine, and misreads from a damaged crank reluctor. Proper scan data and basic electrical checks help separate these from a CKP fault.