Parts for your 2010 Holden Commodore-Throttle position sensors

2010 Holden Commodore throttle position sensor (TPS)

Yes, the 2010 Holden Commodore is fitted with throttle position sensors. Technical sources including the Holden VE Commodore Workshop Manual (GM Service Information, Section 6E – Engine Controls), GM E38/ESM electronic throttle control descriptions, and ACDelco/GM ETC diagnostic training materials all specify a drive-by-wire throttle body that contains dual, redundant throttle position sensors. Rather than a cable-operated throttle, the 2010 Commodore (both V6 SIDI and V8 variants) uses an electronic throttle actuator with twin TPS tracks inside the throttle body, working alongside the accelerator pedal position sensors.

On this model, the TPS tells the engine control module exactly where the throttle blade sits, so fuelling, ignition timing, and transmission behaviour can be matched to driver demand. The twin-track design is there for safety and accuracy—two signals are constantly cross-checked so the ECM can spot any mismatch and drop into a protective mode if needed. Typical signs of TPS or throttle-body related issues include an illuminated check engine light, surging or hunting idle, flat spots on acceleration, poor fuel economy, and a “limp home” condition. Common DTCs you might see are in the P0121–P0123 and P0220–P0223 ranges.

Servicing is straightforward but a bit different to old-school cable throttles. On the 2010 Commodore, the TPS is integrated into the electronic throttle body and isn’t serviced separately—faulty sensors usually mean replacing the throttle body assembly. Smart maintenance includes:

• Periodic throttle body cleaning using the correct throttle-safe cleaner—don’t force the blade open and avoid harsh solvents.
• Inspecting the throttle body connector and wiring for corrosion, oil ingress, or broken pins.
• Scanning for DTCs and live data to confirm TPS agreement and throttle command vs. position.
• Performing a throttle/idle relearn after battery disconnect or throttle body replacement (via scan tool or the manufacturer’s key-on/idle procedure).
• Fitting a quality gasket and following workshop torque specs when refitting.

Keeping the air filter fresh and the intake tract clean helps the TPS and throttle motor do their job without gumming up. During regular services, a quick visual and data check, plus cleaning around 60,000–80,000 km, can prevent drivability niggles and keep the Commodore running sweet as under the bonnet.

FAQs

How do you know the TPS is failing on a 2010 Commodore?
Drivers often notice a check engine light, uneven idle, hesitation off the line, or the car going into reduced-power mode. A scan will typically show TPS-related codes (P0121–P0123 or P0220–P0223) or disagreement between commanded and actual throttle position. Because the TPS is built into the throttle body, issues can feel like general throttle body faults.

Can the TPS be replaced separately from the throttle body?
No. On the 2010 Commodore, the TPS is integral to the drive-by-wire throttle body. If diagnosis confirms a TPS fault, the fix is usually a complete throttle body replacement, followed by a throttle/idle relearn to restore correct operation.

Do you need to calibrate or relearn the throttle after replacement?
Yes. After replacing the throttle body or disconnecting the battery for an extended time, a relearn is required. The easiest way is with a capable scan tool. Some vehicles will self-relearn after key-on/engine-off and warm idle procedures, but using the proper service method gives the most consistent result.