Parts for your 2010 Subaru Exiga-Throttle position sensors

2010 Subaru Exiga throttle position sensors — what they do and how to look after them

Technical references including the Subaru Factory Service Manual for the Exiga YA series (2008–2012) and Subaru’s FAST electronic parts catalogue confirm the 2010 Subaru Exiga uses electronic throttle control. The throttle body on these models houses two throttle position sensors (redundant TPS) built into the unit, so a TPS is absolutely relevant on the 2010 Exiga.

On the 2010 Exiga, the throttle position sensors are part of the drive-by-wire throttle body. They constantly report the exact angle of the throttle plate to the ECU, which then balances fuelling, ignition timing and idle control. With dual sensors inside the throttle body, the ECU cross-checks signals for safety and smooth response. That’s why a healthy TPS setup is key to crisp take-offs, consistent cruising and decent fuel economy on Aussie and Kiwi roads.

There’s no routine replacement interval for the TPS on this model because it’s integrated into the throttle body assembly. During regular services (say, each 10,000–15,000 km), it’s smart to:

• Scan for fault codes like P0120–P0124 or P2135 and verify live TPS percentages move smoothly with pedal input.
• Inspect the throttle body connector and loom for moisture, corrosion or broken locking tabs.
• Clean the throttle bore and plate with a sensor-safe throttle cleaner to prevent sticky operation that can mimic sensor faults.

Common signs of TPS-related drama include erratic idle, surging, flat spots, limp mode, the cruise control light flashing and the CEL on. If the ECU flags correlation or range/performance faults, check wiring first. If signals remain jumpy or out of spec, the fix is typically replacing the complete throttle body, as the TPS isn’t designed to be swapped on its own on most Exiga variants.

When fitting a new throttle body, use a fresh gasket, tighten bolts evenly to factory spec, and perform an idle/throttle relearn with a suitable scan tool or per the service manual. After any battery disconnect or throttle work, an adaptation reset helps the ECU relearn proper idle air flow. A quick post-repair road test under varying loads seals the deal.

FAQs

Does the 2010 Subaru Exiga have a separate throttle position sensor I can replace?
Most 2010 Exiga engines use an electronic throttle body with the TPS built in. In practice, if the sensor fails, the remedy is replacing the whole throttle body and then carrying out a throttle/idle relearn. Always confirm via the VIN in a parts catalogue before ordering.

What symptoms point to a failing TPS on a 2010 Exiga?
Expect uneven idle, hesitation off the line, surging at steady speed, poor fuel use, and warning lights (CEL, flashing cruise). Fault codes like P0122, P0123 or P2135 are common. Check for wiring or connector issues first, then the throttle body itself.

Can cleaning fix TPS issues on the Exiga?
Cleaning helps if the throttle plate is sticking or carboned up, which can feel like a sensor fault. True internal TPS faults won’t be cured by cleaning, they usually require a throttle body replacement. Always run an adaptation reset after cleaning.