Parts for your 2016 Holden Barina-Throttle position sensors

2016 Holden Barina throttle position sensor (TPS): what it is and how it’s serviced

Technical sources confirm the 2016 Holden Barina (TM series) is fitted with a throttle position sensor. GM Global Service Information (GSI) for the TM Barina, the Holden/GM Electronic Parts Catalogue, and ACDelco/Delphi parts catalogues all specify an electronic throttle body for this model that incorporates dual throttle-position-sensor tracks. The TPS is integral to the throttle body and is not a standalone, serviceable sensor.

The 2016 Holden Barina runs electronic throttle control, so its throttle-position-sensors sit inside the throttle body and continuously report the blade angle to the engine control module. Working alongside the accelerator pedal position sensors, the TPS helps the ECU manage fuel injection, ignition timing and idle speed. On this Barina, the TPS uses dual signals for redundancy, the ECU constantly cross-checks them to keep things safe and smooth. That’s why, when the signals don’t agree, the car may drop into a reduced-power mode to protect the engine and transmission.

As part of routine servicing, the TPS itself isn’t a scheduled replacement item, but the throttle body deserves periodic attention. Every 30,000–60,000 kilometres, a careful clean of the throttle bore and blade can prevent sticky movement that feels like a TPS fault. Under the bonnet, ignition off, remove the intake duct and use a proper throttle-body cleaner on a lint-free cloth. Don’t force the blade open or soak the electronics. Once refitted, many Barinas perform an automatic idle relearn after a short drive cycle, if idle is unstable, a scan-tool throttle/idle relearn is the tidy way to finish the job.

If diagnostics show TPS correlation or range codes (commonly P0121, P0122, P0123, P2135), inspect for intake leaks, poor grounds, or a dirty throttle first. When the sensor itself is deemed faulty, replace the complete throttle body assembly, as the TPS isn’t separable on the TM Barina. Use quality OE-spec parts, fit a new gasket if applicable, and torque the fasteners evenly. Clear any stored DTCs and carry out a throttle relearn. A quick road test confirming stable idle, crisp throttle response, and no MIL light is the final check.

• Typical symptoms: erratic idle, hesitation, sudden limp-home, harsh shifts (auto), and the MIL on.
• Good practice: inspect the connector and harness near the throttle body for rub-through before condemning the unit.

Popular questions about 2016 Holden Barina throttle-position-sensors

Does a 2016 Holden Barina actually have a TPS?
The TM-series Barina does have a throttle position sensor. It’s built into the electronic throttle body as a dual-track sensor and isn’t sold separately. This design is documented in GM GSI service procedures and the Holden/GM parts catalogue.

What are the signs the TPS is playing up on a Barina?
Owners may notice a rough or hunting idle, hesitation on take-off, poor fuel economy, the check-engine light, or a reduced-power message. Diagnostic trouble codes like P0121 or P2135 are common. Always rule out a dirty throttle body or wiring issue before replacing the unit.

Can the TPS be replaced on its own?
On the 2016 Barina, no. The TPS is integrated with the throttle body, so replacement involves swapping the complete throttle body assembly and then performing a throttle/idle relearn with a scan tool or a drive cycle.