Parts for your 2015 Daihatsu Bego-Crank angle sensor

2015 Daihatsu Bego crank angle sensor — purpose, servicing and replacement

Based on the Daihatsu Terios/Bego J200-series service manual (Engine Control – 3SZ-VE), Toyota Rush (J200) workshop information, and the Daihatsu electronic parts catalogue for the 3SZ-VE, the 2015 Daihatsu Bego is fitted with a crank angle sensor (also called a crankshaft position sensor, CKP). It’s a core engine management input, not an optional extra.

This little sensor lets the ECU know exactly where the crankshaft is and how fast it’s spinning. That timing info is used to trigger sparks and fire the injectors at the right moment, and to coordinate with the cam sensor for VVT-i. If the signal goes missing or messy, the Bego can be a pig to start, stumble, or quit altogether.

Common tell-tales include a hard start or no start, random stalling at idle, rough running, poor fuel economy, and a check engine light with codes like P0335/P0336. On the 3SZ-VE, the CKP is mounted on the engine block near the crank pulley/timing cover area, reading a toothed wheel on the crank.

Servicing-wise, the sensor itself isn’t a scheduled replacement item, but it’s smart to:

• Inspect the connector and loom routing at major services for oil ingress, corrosion or chafing.
• Keep the area free of caked-on grime and metallic debris.
• Check for engine oil leaks that can wick into the plug.

Replacing a tired CKP is straightforward for a competent DIYer:

1. Disconnect the battery and safely raise the front if needed for access.
2. Unplug the sensor connector and remove the retaining bolt.
3. Twist-pull the sensor out, the O-ring may be snug. Lightly oil the new O-ring.
4. Fit the new sensor, tighten the bolt to factory spec, and reconnect the plug.
5. Clear any fault codes and perform an idle relearn if required.

Go for quality—OE or reputable aftermarket—because low-rent sensors can cause intermittent misfires that will have you chasing your tail. If faults persist after replacement, check crank trigger wheel condition, harness continuity, and ECU grounds. For owners who’d rather not get under the bonnet, a workshop can test the signal waveform and confirm the fix quickly.

FAQs

Where is the crank angle sensor on a 2015 Daihatsu Bego?
On the 3SZ-VE engine it’s mounted on the engine block adjacent to the crank pulley/timing cover area, reading a toothed reluctor on the crank. Access is typically from the front underside or right-hand wheel arch, depending on undertrays and whether it’s 2WD or 4WD.

What fault codes point to a bad crank angle sensor?
Common codes are P0335 (Crankshaft Position Sensor “A” Circuit) and P0336 (Range/Performance). Intermittent sensors can also throw stalling or misfire symptoms without a code. Always verify with live data or scope testing before parts swapping.

Is it safe to keep driving with a failing crank angle sensor?
Not really. The engine can stall without warning, be hard to restart, and may run rich, which isn’t kind to the cat. If the Bego shows CKP-related faults or stalls, sort it promptly to avoid being stranded.