Parts for your 2014 Holden Barina-Throttle position sensors

2014 Holden Barina throttle position sensor: what it is, where it lives, and when to sort it

Technical sources for the TM-series 2014 Holden Barina (GM global T300 platform) confirm the car uses electronic throttle control. In Holden/GM Service Information for Engine Controls – Electronic Throttle Control Description and Operation, the throttle body contains dual internal throttle position sensors (TPS) for redundancy, while the accelerator pedal houses a separate pedal position sensor. OE parts catalogues (GM Genuine Parts/ACDelco for TM Barina) service the TPS only as part of the complete throttle body assembly, not as a stand-alone sensor. In short: a TPS is definitely used on the 2014 Barina, but it’s integrated into the throttle body and not replaced on its own.

The TPS in a 2014 Holden Barina tells the engine control module exactly how far the throttle plate is open, so fuelling, ignition timing, idle speed, and even auto shift behaviour can be spot on. Because it’s a drive-by-wire setup, the throttle body runs two TPS tracks to constantly cross-check position for safety. That data also plays nicely with cruise control, traction and stability systems. When everything’s happy, the engine feels smooth and responsive.

When a TPS or throttle body starts acting up, owners often see a Check Engine Light and “Reduced Power”/limp mode. Common clues include erratic idle, flat spots, stalling when coming to a stop, and codes like P0121–P0123 (TPS range/performance), P2135 (throttle/pedal position correlation), or P2101/P2119 (throttle actuator performance). Because the TPS is built in, confirmed faults typically mean replacing the entire throttle body assembly and carrying out a throttle/idle relearn with a scan tool. There’s no adjustment of the sensor on this model.

• Good servicing practice: inspect the throttle body and intake ducting for oil and carbon build-up every 60,000–80,000 km, especially if most driving is around town.
• If cleaning is needed, use throttle body-safe cleaner only, keep the blade propped open gently by hand, and never force it against the stop. Replace the gasket if it looks tired.
• Before condemning the unit, check the 5 V reference, ground integrity, and the connector for corrosion or pin tension issues. Rule out vacuum leaks that can mimic TPS faults.
• After cleaning or replacement, perform an idle/throttle relearn. Some shops do this with a scan tool, some ECUs relearn after a short drive cycle.

When a new throttle body goes in, quality OE-equivalent parts and a proper relearn save headaches. That keeps the Barina’s idle tidy, throttle feel crisp, and fuel economy on point.

Popular questions

Does a 2014 Holden Barina have a separate throttle position sensor I can swap?
It doesn’t. On the TM Barina the TPS is built into the electronic throttle body. If the sensor is faulty, the usual repair is to replace the complete throttle body assembly and then carry out a throttle/idle relearn. The accelerator pedal has its own position sensor, but that’s a different part and fault path.

What fault codes point to a TPS issue on a 2014 Barina, and is it safe to drive?
Codes like P0121, P0122, P0123, P2135, P2101 or P2119 often show up with TPS/throttle body problems. The car may enter Reduced Power mode. Short trips to a workshop are usually fine, but extended driving isn’t recommended because throttle response can be unpredictable and performance limited.

How often should the throttle body/TPS be cleaned or serviced?
There’s no strict interval, but a check and clean around every 60,000–80,000 km works well, or sooner if idle gets rough or the throttle feels sticky. Use throttle-body-safe cleaner, don’t force the blade, and finish with a relearn so the ECU can settle the new idle position.