Parts for your 2018 Volkswagen Amarok-Camshaft sensor

2018 Volkswagen Amarok camshaft sensor — what it does and when to replace it

Yes — the 2018 Volkswagen Amarok uses a camshaft position sensor (often referred to in VW literature as the camshaft position sender G40, and on the V6 there are sensors per bank). This is supported by Volkswagen technical sources, including Self-Study Programme 397 (2.0L TDI common-rail), Self-Study Programme 493 (3.0L V6 TDI EA897), the ElsaPro/ELSA repair manual procedures for “Camshaft position sender -G40-: remove and install”, and the VW ETKA parts catalogue listings for Amarok MY2018 variants. Those documents describe the camshaft sensor’s role in synchronising injection events with the crankshaft and, on applicable engines, monitoring camshaft adjustment.

On the Amarok, the camshaft sensor is the ECM’s eyes on cam timing. It detects the precise position of the camshaft(s) so the engine control unit can phase fuel injection perfectly with piston position. On the 2.0 TDI it helps with accurate start-of-injection and smooth idle, on the 3.0 V6 TDI it also supports bank-specific control and camshaft adjustment monitoring. If the sensor signal goes missing or drifts, the ute can get hard starts, rough running, reduced power (limp mode) and a glowing check engine light. Common OBD codes include P0340/P0341 (camshaft position circuit/performance) and correlation faults like P0016 when the cam and crank don’t agree.

It’s not a routine service item, so there’s no set replacement interval. Instead, it’s replaced on condition when faults are logged or symptoms appear. That said, there are sensible checks to fold into normal servicing: inspect the sensor connector for moisture or green corrosion, look for oil seepage at the sensor O-ring, and eyeball the loom for chafing around the rear of the cylinder head(s) and under the engine cover. On high-kilometre Amaroks that work hard, these simple inspections can head off bigger dramas.

• Typical symptoms of a dodgy cam sensor: longer crank times (especially warm), rough idle, flat spots under load, poor fuel economy, random stalling, and stored DTCs.
• Replacement tips: only fit quality OEM-equivalent sensors, renew the O-ring, keep the mounting face clean, route the harness in the factory clips, and clear DTCs then run a basic setting/cam–crank correlation check with a scan tool (ODIS, VCDS, etc.).
• DIY difficulty: moderate. Access varies — the 2.0 TDI is usually straightforward, the V6 may need a bit more room under the bonnet. Expect 30–90 minutes depending on engine and tools.

If an Amarok is cranking longer than usual or dropping into limp, a quick scan and a look at live data (cam signal present, cam/crank sync OK) will point straight at the sensor or its wiring. When replaced correctly, starting and drivability are typically restored on the spot.

Does the 2018 Amarok have one or two camshaft sensors?

The 2.0 TDI generally uses a single camshaft position sensor. The 3.0 V6 TDI has a sensor per bank, plus a crankshaft sensor for overall synchronisation. The exact configuration depends on the engine code, so parts should always be confirmed by VIN.

What fault codes point to a camshaft sensor issue on a 2018 Amarok?

Common ones include P0340 (camshaft position circuit), P0341 (range/performance), P0342/P0343 (low/high input), and correlation codes like P0016 when the cam and crank signals don’t align. Intermittent versions often hint at wiring or connector problems rather than the sensor itself.

Is it safe to keep driving with a faulty camshaft sensor?

It may start and run, but expect hard starts, rough running and limp mode. Short, cautious trips might be possible, yet it’s best to sort it promptly to avoid being stranded and to prevent misdiagnosis of other issues.