Parts for your 2012 Holden Barina-Crank angle sensor

2012 Holden Barina crank-angle-sensor (crankshaft position sensor)

Based on technical references including the Holden/GM TM Barina workshop manual (Engine Controls – Crankshaft Position Sensor), ACDelco Australia parts listings for TM Barina (showing a dedicated crankshaft position sensor for 2012 models), and common OBD-II diagnostic guidance (DTCs P0335–P0339), the 2012 Holden Barina is fitted with a crank-angle-sensor. It’s an essential input for the engine control module on both the 1.6-litre petrol and the later 1.4 turbo RS variants.

The crank-angle-sensor on a 2012 Holden Barina tells the engine control module exactly where the crankshaft sits in its rotation and how fast it’s spinning. Paired with the cam sensor, it lets the ECU fire the spark and inject fuel at the right moment, manage idle, start cleanly cold or hot, and detect misfires. Without a crisp signal from this sensor, the ECU is effectively flying blind — cue rough running, stalling, or a no-start.

Because it’s a solid-state sensor, there’s no periodic maintenance like adjusting or cleaning a pick-up gap. Servicing is more about inspection: checking the connector for corrosion, ensuring the harness isn’t chafed near the bellhousing, and watching for oil leaks that can seep onto the plug. Many Barina fault codes linked to the crank sensor (P0335–P0339) are intermittent heat-related faults or simple wiring issues, so a quick loom check saves headaches.

Replacement is straightforward for a trained tech. Typical steps include disconnecting the battery, safely raising the front, and accessing the sensor mounted low on the block near the transmission bellhousing (location can vary slightly by engine). After removing a single retaining bolt, the old sensor is gently twisted free, an O-ring is replaced or lightly oiled on the new unit, and the sensor is refitted with the bolt tightened to the workshop manual’s spec. The harness is clipped back exactly as routed from factory to avoid heat and rub points. Clearing codes comes next, and on many GM systems a crankshaft variation learn (relearn) with a suitable scan tool is recommended so the ECU aligns itself to the new signal.

Practical tips Barina owners appreciate:

• Watch for hot restart cut-outs or sudden stalls at traffic lights — classic early signs.
• If oil is present at the connector, fix the source of the leak so the new sensor isn’t compromised.
• During routine services (say every 30–40,000 km), a quick visual of the loom and plug under the bonnet goes a long way.

When fitted with a quality replacement sensor that matches the Holden/GM spec (as listed in ACDelco and reputable aftermarket catalogues), the Barina’s engine management regains stable timing and reliable starting, keeping day-to-day driving tidy and fuel-efficient.

Popular questions

Where is the crank-angle-sensor on a 2012 Holden Barina?

On TM-series Barinas, it’s typically mounted low on the engine block reading a reluctor on the crankshaft, near the transmission bellhousing. Access is usually from underneath or via the right-hand wheel arch with the liner eased back, depending on tooling and engine variant.

Does a replacement crank-angle-sensor need programming?

The sensor itself isn’t programmed, but after replacement many GM systems benefit from a crankshaft variation learn (relearn) using a capable scan tool. This helps the ECU fine-tune misfire monitoring and timing accuracy.

Can a failing crank sensor cause a no-start, and what might it cost?

Yes — a dead crank signal means no spark or injection timing, so it can be a crank-no-start. Parts pricing in Australia/NZ commonly sits around AUD/NZD $60–$180 depending on brand, with about 0.5–1.0 hour labour in typical workshop conditions, plus a scan-tool relearn where applicable.