Parts for your 2002 Daihatsu Yrv-Camshaft sensor

2002 Daihatsu YRV Camshaft Sensor

Based on factory documentation and recognised service information, the 2002 Daihatsu YRV is fitted with a camshaft position sensor (CMP). This sensor is used across the K3-VE and K3-VET engines found in the YRV range to enable sequential fuel injection, ignition timing control and variable valve timing strategy.

• Daihatsu YRV M200/M201 Series Workshop Manual – Engine Electrical: Camshaft Position Sensor (DTC P0340/P0341)
• Daihatsu Electronic Parts Catalogue (EPC) – M200/M201 YRV: listing for “Sensor, Camshaft Position” on K3-VE/K3-VET
• Daihatsu K3-VE/K3-VET Engine Control System training material – cam and crank angle inputs for ECU synchronisation
• Independent service databases (AU/NZ) – ignition/injection systems requiring CMP for sequential control

For the 2002 Daihatsu YRV, the camshaft sensor is the ECU’s way of knowing exactly where the intake cam is in its rotation. That matters for crisp starts, smooth idle, proper spark timing and for the engine to run sequential fuel injection rather than batch firing. On models with variable valve timing, the CMP also lets the ECU verify cam advance behaviour and flag any mismatch with the crank signal.

Owners will usually find the sensor mounted on the cylinder head near the timing end, under the bonnet on the intake side. It reads a trigger on the cam and sends a clean on/off signal the ECU can interpret. When it’s healthy, the car fires up quickly, runs cleanly and uses less fuel — happy days.

It’s not a service item in the usual sense, but it does pay to give it a look whenever the rocker cover is off or as part of a larger service. Check the wiring sheath for brittleness, make sure the connector isn’t oil-soaked, and replace the O-ring if there’s any weeping. If the dash lights up with a check engine lamp and codes like P0340 or P0341, or the YRV has hard starting, random stalling, sluggish performance or goes into limp-home, the cam sensor circuit is a prime suspect.

Replacement is typically straightforward with basic tools: disconnect the battery, unclip the connector, remove the retaining bolt, twist the sensor gently to free the O-ring, and swap in a quality part. Lightly oil the new O-ring, seat it square, and don’t over-tighten the bolt — snug is enough. After refitting, clear any fault codes and take it for a drive to confirm the ECU is seeing stable cam signal again. If faults return, inspect the harness and verify the crank sensor too, as the ECU needs both signals to stay in sync.

• Tip: Oil contamination inside the connector or a brittle loom near the back of the head is common on older cars — cleaning and re-looming can save repeat headaches.

Popular questions

Where is the camshaft sensor on a 2002 Daihatsu YRV?
It’s usually on the intake side of the cylinder head near the timing cover area, under the bonnet. Look for a small two- or three-pin sensor held by a single bolt, with a short harness leading into the main loom.

Access is typically from the top. On some cars, moving a hose or air duct out of the way makes life easier. If in doubt, follow the loom from the top rear of the head towards the timing end.

What are the signs the camshaft sensor is failing on a YRV?
Hard starting (especially hot), misfires at idle, rough running, poor fuel economy and an illuminated check engine light are common, often with codes P0340/P0341. The ECU may fall back to a less precise mode, so it might still run but feel flat and use more fuel.

Intermittent issues are common when heat causes internal sensor faults or a weak connection. Checking the connector for oil and the loom for cracking is worthwhile before condemning the sensor.

Can a 2002 YRV run with a faulty camshaft sensor?
Sometimes it will start and run using crank-only fallback, but it may crank longer, lose low-down response and switch to batch injection. On some faults it may not start at all. Driving like this isn’t recommended — get the fault diagnosed and the sensor or wiring sorted promptly.

Fixing the cam sensor issue restores proper timing control and protects the catalytic converter by preventing misfires and excess fuel.