Parts for your 2007 Holden Commodore-Throttle position sensors

2007 Holden Commodore throttle-position-sensors (TPS): what they do and how to look after them

Technical note: Authoritative sources confirm the 2007 Holden Commodore (VE series) does use throttle-position-sensors. Holden’s VE Commodore Service Manual and GM Global Service Information specify an electronic (drive‑by‑wire) throttle body with dual throttle position sensors (TP1/TP2) built into the housing, along with a dual accelerator pedal position sensor on the pedal assembly. This mirrors Bosch electronic throttle control architecture used by GM globally. Because the TPS is integral to the throttle body, it’s absolutely relevant on this model, it’s just not a separate, old‑style bolt‑on switch.

On a 2007 Commodore, the throttle-position-sensors tell the engine control module exactly how far the throttle plate is open, letting it meter fuel and ignition, manage idle speed, cruise control, auto transmission shift strategy, and keep traction and stability systems happy. Being a drive‑by‑wire setup, the throttle body carries two TPS signals that move in opposite directions for redundancy. If they don’t agree, the car will jump into Reduced Power mode to play it safe.

When the TPS data goes off, typical behaviour includes a hunting or high idle, flat spots or stumbling on light throttle, sudden limp mode, and occasionally odd shift timing. The check engine light may log codes like P0120–P0124 (TPS range/performance), P2135 (TP1/TP2 correlation) or P2101/P2119 (throttle actuator performance). Those codes are a strong hint the ECU isn’t happy with what it’s hearing from the throttle.

As part of regular servicing, there’s no adjustment for the TPS on a VE, the focus is cleanliness and connections. Keep the throttle blade and bore clean with a throttle-body safe cleaner, but don’t drown the shaft or sensor area. Inspect the wiring connector for moisture, oil wicking or corrosion, and ensure battery voltage and grounds are mint — low system volts can trigger throttle faults. If the throttle plate looks gummy, a careful clean often restores smooth idle and response.

If replacement is needed, the TPS is part of the electronic throttle body, so the whole unit is swapped. Fit a quality assembly and a fresh gasket/O‑ring as required, and don’t force the blade open by hand. After installation, perform a throttle/idle relearn. A capable scan tool (Tech 2/MDI or equivalent) is best, though a key‑on/engine‑off learn can work: ignition on for ~30 seconds, off for ~30 seconds, then start and let it idle (no A/C, lights or steering input) until warm. Clear any codes and road‑test. If issues persist, compare the accelerator pedal sensor data and check wiring before pointing the finger at the new throttle body.

Looked after with clean air, good fuel and sensible servicing, many VE throttle bodies (and their TPS) rack up well over 200,000 kilometres without drama. Most headaches come from contamination or iffy connectors rather than an outright sensor failure.

Popular questions about 2007 Holden Commodore throttle-position-sensors

Does a 2007 Holden Commodore have a throttle position sensor?
Yes. The VE Commodore uses electronic throttle control, and the throttle body contains two throttle position sensors (plus the accelerator pedal has two sensors). They work together to give the ECU precise, redundant feedback and to trigger Reduced Power mode if readings disagree.

Can the TPS be replaced on its own, or is it part of the throttle body?
On the 2007 VE it’s integrated into the electronic throttle body, so you replace the entire throttle body assembly. After fitting, carry out a throttle/idle relearn with a suitable scan tool (or a key‑on/engine‑off learn) and then clear codes and road‑test.

What fault codes or symptoms point to a failing TPS on a VE?
Common symptoms include a surging or high idle, flat spots, and Reduced Power mode. Typical DTCs include P0120–P0124 (TPS issues), P2135 (TP1/TP2 mismatch), and sometimes P2101/P2119 (throttle actuator performance). Always check for connector corrosion and clean the throttle bore before condemning the unit.