Parts for your 2011 Holden Commodore-Throttle position sensors

2011 Holden Commodore throttle-position-sensors: what they do and how to look after them

Based on Holden/GM Service Information (VE Series II, Engine Controls — Electronic Throttle Control), the 2011 Holden Commodore runs an electronic (drive-by-wire) throttle. That system uses dual throttle-position-sensors (TPS) built into the throttle body, plus dual accelerator-pedal position sensors on the pedal. ACDelco parts catalogues for VE throttle bodies note the TPS is integral and non-serviceable, and Bosch technical literature on electronic throttle control describes the same dual-redundant sensor strategy used by GM/Holden on VE models. So yes, a throttle-position-sensors setup is absolutely fitted and relevant on the 2011 Commodore.

The throttle-position-sensors tell the engine computer exactly how far the throttle blade is open. That data is critical for fuelling and spark timing, smooth idle, gear changes in autos, cruise control, traction/stability control, and limp-home protection. The Commodore’s ETC uses two TPS tracks that must agree with each other, if they don’t, the car will often drop into reduced-power mode to keep things safe.

Common signs the TPS or its circuit is playing up include a check engine light, sluggish response, hunting idle, sudden throttle cut, or traction/ESP warnings. Typical fault codes are P0121–P0123, P0221–P0223, and correlation codes like P2135. Because the TPS is part of the throttle body on VE Series II engines, replacement usually means swapping the complete throttle body assembly.

• No routine service is needed for the sensor itself, it’s sealed. Do keep the throttle bore clean with the right cleaner (air intake removed, ignition off). Avoid forcing the blade open by hand on electronic throttles.
• Diagnosing? Use a scan tool to watch both TPS signals. They should track smoothly from near-closed to wide-open and agree with each other. Also check the accelerator-pedal sensors, wiring, grounds, and battery health.
• Replacing the throttle body? Fit a quality gasket or O-ring, torque to spec, reconnect carefully, then perform an idle/throttle relearn. Many scan tools guide this, or it may relearn after a short drive/idle cycle.
• If faults persist, inspect loom routing and connectors for corrosion, oil wicking, or pin tension issues before condemning parts.

On V6 SIDI and the L77 V8 alike, the approach is the same: the TPS is integral to the throttle body and not adjustable. Expect roughly 0.7–1.0 hours labour for swap and relearn, plus extra time if cleaning and diagnostics are included.

Popular questions

Does a 2011 Holden Commodore have a throttle-position-sensors?
Yes. The VE Series II Commodore uses electronic throttle control with dual throttle-position-sensors inside the throttle body, plus dual pedal sensors. GM/Holden service info and ACDelco throttle body listings confirm the TPS is integral and non-serviceable.

Can the throttle-position-sensors be cleaned or adjusted?
No. The TPS is sealed within the throttle body and can’t be adjusted. You can safely clean the throttle bore to fix sticky airflow issues, then carry out a throttle/idle relearn. If the TPS has failed, replace the throttle body assembly.

What fault codes point to a TPS issue on a VE Series II?
Common codes include P0121–P0123 (TPS circuit range/performance), P0221–P0223 (secondary TPS issues) and P2135 (TPS 1–2 correlation). Reduced-power mode and ESP lights may appear. Confirm with scan data before replacing parts.