Parts for your 2012 Holden Captiva 7-Throttle position sensors

2012 Holden Captiva 7 Throttle Position Sensor (TPS)

Based on GM Global Service Information, the Holden CG Captiva Series II workshop manual, and parts catalogues from ACDelco/Delphi and Bosch, the 2012 Holden Captiva 7 uses electronic throttle control. In this setup, the throttle position sensors are integrated into the electronic throttle body (alongside the actuator motor), and the accelerator pedal carries its own dual-position pedal sensor. So yes—this model absolutely uses throttle position sensing, it’s just built into the throttle body rather than being a standalone bolt-on sensor.

On the Captiva 7, the TPS tells the engine control module exactly how far the throttle plate has opened. That live angle data lets the ECM juggle fuel, spark, idle speed, cruise control and even auto transmission shift timing. It also helps with traction and stability systems, smoothing power delivery when the road’s a bit greasy. With dual-track sensors inside the throttle body, the ECM cross-checks signals for safety, dropping the vehicle into reduced power if the readings don’t agree.

When a TPS plays up, drivers might notice hesitant acceleration, a rough idle, hunting revs, or the check engine light. Common fault codes include P0121–P0123 and correlation codes like P2135. Because the TPS is part of the throttle body, replacement usually means swapping the whole assembly. That’s why using quality parts matched to the Captiva’s engine—2.4 petrol, 3.0 V6 petrol or 2.2 diesel—is the smart move. The gasket or O-ring should be inspected and replaced if damaged, and the electrical connector needs to be clean and seated properly.

As part of servicing, it pays to give the throttle body a careful clean when there’s carbon build-up causing sticky operation. Use a throttle-body safe cleaner, keep solvents off the external motor housing and electronics, and don’t force the butterfly by hand. After cleaning or replacement, carry out a throttle/idle relearn using a capable scan tool or the manufacturer’s relearn procedure so the ECM can set the correct throttle angle at idle. It’s also worth checking the harness where it bends near the throttle body for any chafing or moisture ingress.

• Watch for symptoms: sluggish response, fluctuating idle, sudden limp mode.
• Scan first: verify TPS-related DTCs and live data before replacing parts.
• Finish with a relearn: essential after cleaning or fitting a new throttle body.

FAQs

Where is the TPS on a 2012 Holden Captiva 7?
It’s built into the electronic throttle body on the intake. There isn’t a separate external TPS to replace on its own, the sensor and actuator are part of one assembly. The accelerator pedal has its own dual-position sensor as well.

Do diesel Captiva 7 models have a TPS too?
Yes. The 2.2‑litre diesel uses a throttle valve (often called a shut-off or swirl/throttle flap) with position sensing. It’s used primarily for EGR control and smooth shutdown, but the ECM still monitors throttle plate position the same way—via an integrated sensor in the throttle unit.

Does the TPS need calibration after service?
After cleaning or fitting a throttle body, a throttle/idle relearn should be done. A suitable scan tool makes it quick and reliable. Skipping the relearn can leave the Captiva with an unstable idle, delayed throttle response, or new fault codes.