Parts for your 2021 Volkswagen Amarok-Camshaft sensor

2021 Volkswagen Amarok Camshaft Sensor: what it does and how to look after it

According to Volkswagen’s factory workshop information (ELSA) and the ETKA parts catalogue for the 2H Amarok, the 2021 Volkswagen Amarok uses a camshaft position sensor. Both engine options fitted to this model year—the 2.0 TDI four‑cylinder and the 3.0 V6 TDI—employ Hall‑effect camshaft position sender(s) for phase detection. In VAG documentation they’re identified as the camshaft position sender G40 (and on the V6, an additional sender on the other bank, often referenced as G163). Volkswagen Self‑Study Programmes for the common‑rail TDI family also describe these sensors as essential to sequential injection control and emissions compliance. So yes, a camshaft sensor is absolutely relevant and fitted to the 2021 Amarok.

On the Amarok, the camshaft sensor helps the ECU figure out exactly where the cam(s) sit in relation to the crank. That lets the brain run precise fuel metering, injection timing and, on start‑up, quick phase synchronisation so it fires cleanly without cranking forever. It also supports smooth idle, proper torque delivery, and keeps emissions gear like the DPF behaving as it should.

It’s not a regular “replace on schedule” service item. Instead, it gets attention when symptoms point that way. Typical tell‑tales include hard starting (especially when warm), sudden loss of power or limp mode, rough idle, uneven acceleration, or the MIL lighting up with codes like P0340/P0341. If the V6 sensor on one bank goes flaky, it can also skew bank‑to‑bank fuelling and feel a bit off‑song.

For routine servicing, the smart play is preventative care: check for stored faults with a scan tool, inspect the sensor connector for oil ingress or corrosion, and make sure the wiring loom isn’t chafed—on the V6 the sensors sit at the rear of the cylinder heads near the bulkhead, and heat cycling can make harness sheathing brittle over time. On the 2.0 TDI, you’ll typically find the sensor near the cam drive end of the head. Any time the engine’s out or upper covers are off, it’s worth a quick look.

• If replacement is needed, use a genuine or high‑quality OEM‑equivalent sensor to avoid signal noise and repeat faults.
• Disconnect the battery, keep the area clean, and lightly oil the O‑ring if supplied. Tighten the retaining bolt to the workshop spec and clear adaptations/faults after installation.
• If a new sensor doesn’t resolve a cam signal fault, check the reluctor/trigger wheel alignment, verify good crank sensor data, and confirm power/ground/signal integrity back to the ECU.

Looked after this way, the Amarok’s camshaft sensor will quietly do its job for years, keeping starts crisp and the diesel running sweet as.

Does the 2021 Amarok actually have a camshaft sensor?

Yes. Both the 2.0 TDI and the 3.0 V6 TDI engines use camshaft position sender(s). The V6 has one on each bank, while the 2.0 TDI uses a single sensor. They’re integral to start‑up synchronisation and accurate fuel injection timing.

What are the common signs a camshaft sensor is failing on a 2021 Amarok?

Expect hard or extended cranking, rough idle, flat spots, limp mode, or the MIL on with codes like P0340/P0341. Sometimes it’ll start and run but feel inconsistent, especially when hot. A scan and a quick harness/connector check are the first steps.

Is it okay to keep driving with a dodgy camshaft sensor?

It might still run, but it’s not a great idea. Mis‑phased fuelling can hurt performance, bump up fuel use, trigger DPF dramas, and lead to stalling at the worst time. Best to get it diagnosed and sorted promptly.