Parts for your 2016 Honda Civic-Throttle position sensors

2016 Honda Civic throttle position sensors: purpose, faults and servicing tips

Based on Honda’s 2016 Civic service information for the Electronic Throttle Control System (ETCS), the model uses dual throttle position sensors integrated into the throttle body. Honda’s parts catalogue lists the TPS as part of the throttle body assembly rather than a separate bolt-on sensor, and typical OBD‑II diagnostics for this vehicle include throttle position–related DTCs (for example P0121–P0124, P2135). So throttle position sensors are absolutely relevant and used on the 2016 Honda Civic.

On the 2016 Civic (both the 2.0L and 1.5L turbo engines), the throttle position sensors track the throttle plate angle so the ECU can manage air intake, fuel delivery, ignition timing and idle speed. In tandem with the accelerator pedal position sensor, the dual TPS signals enable smooth drive‑by‑wire response, cruise control accuracy, emissions control and, on CVT models, refined shift behaviour. Because the sensors are built into the throttle body for redundancy and reliability, they’re not usually serviced separately.

Typical warning signs of TPS issues include an erratic idle, flat spots on acceleration, throttle lag, stalling when coming to a stop, poor fuel economy, or limp mode with a Check Engine light. Common codes on scan tools include P0121–P0123, P0124 or P2135. Before condemning the throttle body, technicians generally check live data for throttle angle versus pedal position, inspect the harness and connector under the bonnet, and rule out vacuum leaks or heavy carbon in the bore.

As part of routine servicing, a gentle clean of the throttle body can help. Use a proper throttle body cleaner and a lint‑free cloth, avoid soaking the shaft area or flooding the electronics. On reassembly, fit a new gasket if disturbed and ensure clamps are snug without over‑tightening. Many Hondas require an idle relearn after cleaning or replacement: with the engine at operating temperature and all loads off, allow it to idle steadily for several minutes so the ECU can recalibrate. If the TPS has failed, the fix on this model is typically a complete throttle body replacement using quality parts, followed by a scan‑tool check and road test. For owners across Australia and New Zealand, a professional diagnostic with live data will save guesswork and prevent unnecessary parts swaps.

• Symptoms to watch: hesitation, surging, unstable idle, hard starts, increased fuel use, DTCs P0121–P0124/P2135.
• Good practice: inspect wiring, clean the throttle body correctly, perform idle relearn, verify with scan data.

Popular questions

Does a 2016 Honda Civic have a throttle position sensor?
Yes. The 2016 Civic uses dual throttle position sensors integrated into the electronic throttle body. They work with the accelerator pedal sensor to deliver accurate drive‑by‑wire control. The TPS is not typically a stand‑alone service item on this model.

What are the signs the TPS is failing on a 2016 Civic?
Owners may notice a rough or hunting idle, hesitation or surging on light throttle, sudden throttle lag, poor fuel economy, or the vehicle entering limp mode. A Check Engine light may appear with codes like P0121–P0124 or P2135. These symptoms can also be caused by wiring faults or a dirty throttle body, so proper diagnosis is important.

Can the TPS be cleaned or reset, or does it need replacement?
The TPS itself isn’t cleaned, it’s sealed within the throttle body. Cleaning the throttle bore and plate can restore smooth airflow and prevent false readings. After cleaning or replacing the throttle body, an idle relearn is recommended so the ECU can recalibrate. If the TPS has failed internally, replacing the complete throttle body assembly is the usual remedy.