Parts for your 2009 Holden Barina-Camshaft sensor

2009 Holden Barina Camshaft Sensor — What it does and when to replace it

For the 2009 Holden Barina (TK series, 1.6L DOHC petrol), a camshaft position sensor is fitted and absolutely relevant to engine management. This is confirmed by GM Holden Service Information (SI) for TK Barina engine controls, GM Global EPC listings that include a dedicated camshaft position sensor for the 1.6L engine, and mainstream workshop databases such as Autodata and Bosch ESI that show a CMP signal line to the ECM. Equivalent technical guides for the same platform (Chevrolet Aveo/Kalos T250) also document the sensor and related diagnostic trouble codes (e.g., P0340/P0341).

On the 2009 Barina, the camshaft sensor helps the engine computer know exactly where the cam is in its rotation. That matters for crisp cold starts, smooth idle, proper sequential fuel injection, and accurate ignition timing. When the sensor signal goes missing or messy, the car might crank longer, idle rough, lose a bit of go, and chuck on the check engine light. The ECM can sometimes fall back to a “get-you-home” mode using the crank sensor, but drivability won’t be flash.

It’s not a scheduled service item like oil or filters, so it’s generally replaced only when it fails a test or sets a fault code. Still, there are a few easy care tips to keep it happy:

• Fix any oil leaks around the rocker cover — oil contamination can shorten sensor life.
• Keep the connector clean and the harness supported, heat and vibration can make wires brittle.
• Stay on top of timing belt services at the correct kilometre interval, poor cam timing can trigger CMP faults and rough running.

If replacement’s on the cards, go for a quality OEM-equivalent sensor. Under the bonnet, the CMP sensor is mounted at the timing-belt end of the cylinder head (top/front of the engine). Basic hand tools will do the job. Disconnect the battery, unplug the connector, swap the sensor, and refit carefully so the O-ring seals properly. After installation, clear fault codes and road test to confirm clean live data and steady idle. No special coding is typically needed on the TK Barina, the ECM will read the new signal straight away. If faults return, double-check wiring integrity and confirm the timing belt hasn’t jumped a tooth.

For anyone in Australia or New Zealand, it’s a straightforward fix that can restore easy starts and tidy fuel economy when the original sensor has had its day.

Popular questions about 2009 Holden Barina camshaft sensors

Where is the camshaft sensor on a 2009 Barina?

It sits on the cylinder head at the timing belt end, near the camshaft sprockets. Look down the front/top of the engine under the bonnet — you’ll see a small sensor with a single electrical connector.

What are common symptoms of a failing camshaft sensor?

Expect longer cranking, rough idle, hesitation, a drop in fuel economy, and the check engine light. The ECM may log codes like P0340 or P0341. Sometimes it’ll run in a basic backup mode but won’t feel right.

Do I need to code or program a new sensor?

On the 2009 TK Barina, no special coding is usually required. Fit the sensor, clear the codes, and take it for a drive. If issues persist, check the wiring and verify cam timing and the timing belt condition.