Parts for your 2020 Holden Commodore-Crank angle sensor

2020 Holden Commodore crank-angle sensor (CKP)

Technical references confirm the 2020 Holden Commodore (ZB, based on the Opel Insignia B) uses a crank-angle sensor, commonly titled the crankshaft position sensor (CKP). General Motors Global Service Information (SI) for the 2.0‑litre turbo petrol (LTG) and 3.6‑litre V6 (LGX) engines details CKP sensor operation and diagnostics, including DTCs P0335–P0339. The Holden ZB Commodore workshop manual wiring diagrams show the CKP circuit feeding the engine control module, and GM/Opel parts catalogues list a serviceable CKP sensor for both engine options. On that basis, the crank-angle sensor is absolutely relevant and fitted to MY20 Commodore models.

The crank-angle sensor on a 2020 Holden Commodore keeps the whole show in tune. It tracks the crankshaft’s exact position and speed, so the ECU can time fuel injection and spark right down to the degree. Without a clean signal from this sensor, the Commodore can struggle to start, stumble at idle, misfire under load, or just die at the lights. It also drives the tachometer signal indirectly, so weird rev-counter behaviour can be a clue.

As for servicing, there’s no routine replacement interval in the factory schedule. The CKP is a solid-state device designed to last the life of the engine. That said, real-world Australia and New Zealand conditions—heat, road grime, and the odd oil weep—can age the sensor and its wiring. If fault codes like P0335 show up, or there’s intermittent stalling and hard hot starts, it’s time for a proper diagnosis before throwing parts at it.

Replacement on the ZB is straightforward for a trained tech but can be fiddly depending on engine variant and access. Expect to disconnect the battery, reach the sensor on the block near the crank, and mind the O‑ring seal. Always route the harness exactly as per the workshop manual to avoid chafe, and use an OEM-quality sensor so the magnetic profile matches what the ECU expects. After fitting, many Commodores require a crank variation relearn with a scan tool—skip that and the ECU may not deliver spot‑on ignition timing.

A few easy-care tips help the CKP live a long life:

• Fix any oil leaks promptly so the sensor and connector don’t soak.
• Keep the under‑bonnet area tidy, don’t blast sensors with a pressure washer.
• If you’re chasing random stalling, check CKP wiring and earths before replacing coils or pumps.

When the CKP does fail, a quality replacement and a proper relearn usually has the Commodore back to smooth, reliable running for many more kilometres.

Popular questions

Does the 2020 Holden Commodore have a crank-angle sensor?
Yes. Both the 2.0‑litre turbo petrol and the 3.6‑litre V6 engines use a crank-angle (crankshaft position) sensor. This is documented in GM Service Information, the ZB Commodore workshop manual, and parts listings, and is tied to diagnostic codes like P0335–P0339.

What are the signs the crank-angle sensor is failing on a ZB Commodore?
Common clues include hard starting (especially when hot), random stalling, rough idle, misfires under load, poor fuel economy, and an erratic or dead tacho. The check engine light may appear with codes such as P0335. Wiring damage near the sensor can mimic a failed sensor, so inspection matters.

Should the crank-angle sensor be replaced as routine service?
No. There’s no scheduled interval. It’s a replace-on-failure item. If symptoms or fault codes point to the CKP, use an OEM-spec sensor and have a crank variation relearn performed with a scan tool after installation.