Parts for your 2010 Honda Civic-Throttle position sensors

2010 Honda Civic Throttle Position Sensor (TPS)

Yes, the 2010 Honda Civic uses a throttle position sensor. On this model (both the 1.8L R18 and 2.0L K-series variants), Honda’s electronic throttle control integrates dual throttle position sensors (TP Sensor A and B) into the throttle body. This is documented in the Honda Civic 2006–2011 Service Manual (Fuel & Emissions and ETCS sections), which also notes that the TP sensors are part of the throttle body assembly and are not a separately serviceable item. Related OBD-II diagnostics—including P0121, P0122, P0123, and P2135—specifically reference TP sensor circuits and correlation checks, further confirming their presence and function on the 2010 Civic.

The TPS tells the engine control module the exact angle of the throttle plate, so fueling, ignition timing, idle speed, and the throttle actuator all work in sync. That’s why smooth take-off, clean gear changes, stable idle, and decent fuel economy rely on an accurate TPS signal. On the 2010 Civic, the system uses two tracks for redundancy and safety, constantly cross-checking signals from Sensor A and B.

There isn’t a routine service interval for the TPS itself, but a few smart habits go a long way. Keep the throttle body clean (don’t flood it with harsh solvents, and avoid spraying directly at the sensor area). Make sure battery voltage and grounds are healthy, because low volts can throw sensor readings out. If the dash lights up with a check engine light, idle goes wonky, the car surges, cruise control drops out, or it goes into limp-home, scan it for TP-related codes and live data—look at TP% and its correlation with the accelerator pedal.

If the TPS is faulty on a 2010 Civic, the fix is typically replacing the entire throttle body assembly with a new gasket. Typical workshop steps are:

• Disconnect the battery, remove the intake ducting, unplug the connector, and remove the throttle body.
• Refit with a fresh gasket, reconnect everything, and check for coolant hoses if fitted.
• Perform the Honda ETCS/idle learn (commonly: warm the engine, then hold about 3,000 rpm until the radiator fan cycles, and let it idle with all loads off for several minutes).

There’s no manual adjustment screw to set the TPS—don’t try to tweak the throttle stop. Use quality parts and a scan tool to verify TP Sensor A/B agree and the idle sits steady. That’s the reliable, no-fuss way to keep a Kiwi or Aussie 2010 Civic behaving properly on city runs and long kilometres alike.

Popular questions about 2010 Honda Civic throttle position sensors

Does the 2010 Civic have a replaceable TPS, or do I need a whole throttle body?
It does have a TPS, but it’s built into the electronic throttle body as a dual-sensor pack. On most 2010 Civics, Honda specifies replacing the throttle body assembly rather than the sensor on its own. That keeps calibration spot-on and avoids reliability hassles.

What are the common signs of a failing TPS on this model?
Expect a check engine light, inconsistent idle, hesitation on take-off, surging, cruise control dropping out, or limp mode. Scan for codes like P0121, P0122, P0123, or P2135 and check live data for TP Sensor A/B agreement and clean throttle response.

Do I need to do a relearn after replacing the throttle body?
Yes. After fitting the new unit or resetting the ECU, carry out the ETCS/idle learn procedure. Warm the engine fully, then complete the prescribed idle learn so the ECU can settle the throttle control. Skipping this can leave the idle high, low, or unstable.