Honda K20C2 Drive By Wire Throttle Body 16400-5BA-A01

Honda K20C2 Drive-By-Wire Throttle Body (16400-5BA-A01)

The throttle body controls how much air your engine gets, and when it fails or gets gummed up with carbon, it shows up as a rough idle, hesitation, surging, or a throttle that feels inconsistent, and sometimes a check engine light. This is the genuine Honda replacement throttle body for the K20C2, the 2.0L naturally aspirated engine in the Civic LX and Sport and the HR-V. It's a direct-fit OEM part, so it drops in and restores proper throttle response and idle without guesswork on fitment.

When You Need A New Throttle Body

A few things bring people here. The throttle body's electronics or motor can fail outright on a drive-by-wire unit, which throws a code and can put the car in limp mode. More commonly, carbon and oil residue build up around the throttle plate over time, which disrupts airflow at idle and low throttle, causing a rough or hunting idle, stalling, or inconsistent response.

Sometimes a cleaning fixes a gummed-up throttle body, but if it's worn, the electronics are failing, or cleaning doesn't resolve it, replacement is the fix. A fresh genuine throttle body restores clean airflow control and proper idle and throttle response, back to how the car ran when it was new.

Genuine Honda, Direct Fit

This is the OEM Honda part, a direct replacement for the factory throttle body, so it fits and functions exactly as the original. On a drive-by-wire throttle body, the electronics and calibration have to match what the ECU expects, which is why the genuine part matters, it reads and responds correctly without the drivability issues a mismatched or low-quality aftermarket unit can cause. It bolts into the factory location with no modification.

Fitment

2016-2021 Honda Civic LX/Sport (K20C2 2.0L NA)
2022-2026 Honda Civic LX/Sport (K20C2 2.0L NA)
2023-2026 Honda HR-V

Part number 16400-5BA-A01. Genuine Honda, direct replacement.

This is for the 2.0 NA Civic or HR-V owner whose throttle body has failed, is throwing a code, or is causing a rough idle, hesitation, or surging that a cleaning won't fix. Genuine Honda, direct fit, and the correct electronics the ECU expects, so it restores proper throttle response and idle without the drivability headaches a cheap aftermarket unit can bring. Bolt it in and get the car running right again.

Part number: 16400-5BA-A01. Type: genuine Honda drive-by-wire throttle body. Fits: 2016-2021 and 2022-2026 Civic LX/Sport (K20C2 2.0L NA), 2023-2026 HR-V. Function: controls engine airflow; fixes rough idle, hesitation, surging, or failure from a worn or fouled throttle body. Install: direct fit, factory location.