Parts for your 2016 Holden Astra-Crank angle sensor

2016 Holden Astra crank angle sensor — what it does and how to look after it

Yes, the 2016 Holden Astra is fitted with a crank angle sensor (also known as a crankshaft position sensor). Technical references including GM/Opel Service Information for the Astra K/BK (Engine Controls and Fuel – Crankshaft Position Sensor procedures) and Holden’s Electronic Parts Catalogue for MY16 Astra list and illustrate the sensor mounted low on the engine block, reading a toothed reluctor on the crank. Typical diagnostic coverage for this model also includes DTCs P0335/P0336 related to the crank sensor signal, confirming the part’s relevance.

The crank angle sensor tells the engine control module exactly where the crankshaft is and how fast it’s spinning. That live signal is the backbone for fuel injection timing, spark timing, coil dwell, start-up synchronisation with the cam sensor, misfire detection and knock control strategies. Without a clean crank signal, the Astra may crank forever with no start, stumble, or drop into limp mode. On turbo variants, accurate timing also helps manage boost and protect the engine when it’s working hard on Aussie and Kiwi roads.

Owners tend to notice issues like hard starting, sudden cut-outs at idle, or a tacho that drops to zero even while the engine’s still coasting. Common fault codes include:

• P0335 Crankshaft Position Sensor “A” Circuit
• P0336 Crankshaft Position Sensor “A” Range/Performance

The sensor isn’t a scheduled service item, but a bit of attention during routine servicing goes a long way. Keep an eye out for oil leaks tracking down the block, heat-soaked or brittle wiring near the exhaust side, and loose connectors. If replacement is needed, it’s typically a straightforward job for a technician: disconnect battery negative, gain access from underneath, unplug the connector, remove the retaining bolt, replace the sensor and O-ring, and torque to spec per the Holden/Opel workshop manual. Using a quality OE-equivalent sensor is worth it, and the ECU will usually learn the signal without coding. After fitting, clear codes and check live data (RPM signal) and a quick road test. To help the sensor live a long life, maintain proper engine earths, tidy loom routing, and address any oil seepage promptly under the bonnet.

Signs it’s time to investigate include:

1. No-start or extended crank, especially hot
2. Intermittent stalling or surging
3. Engine light with P0335/P0336, erratic tacho

FAQs

Where is the crank angle sensor on a 2016 Holden Astra?
On Astra BK/K engines, the sensor is mounted low on the engine block, aligned to a toothed wheel on the crankshaft. Access is usually from underneath with the splash shield off. GM/Opel workshop procedures show it retained by a single bolt with a sealed O-ring.

Because it lives near heat and road grime, its connector and harness should be checked during routine servicing for oil contamination or chafing.

What are the common symptoms of a failing crank angle sensor?
Owners report hard starting, intermittent stalling, or a dead tacho while coasting. The engine light often logs P0335 or P0336. Sometimes it’ll run fine cold, then die hot and restart once cooled.

Scanning live data helps: if RPM drops to zero while cranking or during a stall, the crank signal is suspect. Always inspect wiring and grounds before calling the sensor itself.

Is it safe to drive with a dodgy crank angle sensor?
Not really. A failing sensor can cause sudden stalls or no-starts, which is risky in traffic. It can also force limp behaviour that hurts drivability.

Best bet is to diagnose promptly and replace the sensor or repair the harness. It’s a relatively small job that restores proper timing and reliability.