Parts for your 2018 Honda Cr-v-Throttle position sensors

2018 Honda CR‑V throttle position sensors (TPS)

Yes, the 2018 Honda CR‑V absolutely uses throttle position sensors. The model runs an electronic throttle (drive‑by‑wire) system with a motorised throttle body that houses dual throttle position sensors (often labelled TP sensor A and B). This is documented in Honda’s factory service information for the 2017–2019 CR‑V, in the Electronic Throttle Control System (ETCS) section, and supported by Honda diagnostic charts for DTCs such as P0121–P0123 and P2135 which specifically reference throttle position sensor circuits. Industry standards like SAE J1979 for OBD‑II also define these TPS data parameters and fault codes, which are used on this vehicle.

• Honda CR‑V 2017–2019 Service Manual: ETCS and Throttle Body sections (Honda Service Information/ServiceExpress)
• Honda DTC charts covering P0121, P0122, P0123, P2135 (Throttle/Pedal Position codes)
• SAE J1979 OBD‑II standard for TPS data and diagnostics

On the 2018 CR‑V, the TPS pair tells the engine computer exactly where the throttle plate sits, so fuelling, ignition timing and idle control all stay on point. The two sensors provide redundant, cross‑checked signals for safety, working alongside the accelerator pedal position sensor on the pedal assembly. If the signals don’t agree, the CR‑V can drop into limp mode to protect the engine and your right foot still gets a predictable response.

Common clues a TPS issue’s brewing include a check engine light, uneven idle, hesitation on take‑off, poor fuel economy, or the car feeling flat and unwilling to rev. Scan tools will often show codes like P0121–P0123 or P2135, and live data will reveal mismatched TP sensor A/B percentages.

Servicing tips for owners in Aus and NZ: the TPS on this model is integrated into the throttle body and isn’t a separate bolt‑on item. If a TPS fails, the fix is typically a complete throttle body replacement. When replacing, fit a new gasket, tighten to the factory torque spec, and perform the Honda idle/ETCS learn procedure. After clearing codes, bring the engine to operating temp, switch off all loads (A/C, lights), then let it idle in Park for several minutes so the PCM can relearn. Many workshops will also run a throttle position reset with a scan tool for a tidy result.

As part of routine servicing, keep the throttle plate clean using a proper throttle‑body cleaner (not harsh carby sprays). Don’t force the plate open by hand, and avoid soaking the electronic side. A quick check for connector corrosion and sound battery voltage helps, too. If in doubt, organise a professional scan and data review before throwing parts at it.

FAQs

Does the 2018 Honda CR‑V actually have a throttle position sensor?
It does. The throttle body includes two built‑in throttle position sensors that feed the engine computer. There’s also a separate accelerator pedal position sensor. Together they manage the drive‑by‑wire throttle for smooth, reliable control.

Can the TPS be replaced on its own, or is it part of the throttle body?
On this model it’s part of the throttle body assembly, so if the TPS fails, the usual repair is replacing the whole throttle body. After installation, an idle/throttle learn is required to get the idle and response back to normal.

What are the signs of a dodgy TPS on a 2018 CR‑V?
Look for a check engine light, sluggish or jerky throttle response, unstable idle and increased fuel use. A scan may show codes like P0121–P0123 or P2135, and the live data will often show the two TPS signals disagreeing.