Parts for your 2018 Haval H6-Throttle position sensors

2018 Haval H6 throttle position sensor: what it is and how to look after it

Based on manufacturer service information for the GW4G15B/GW4C20B petrol engines used in the 2018 Haval H6, plus Bosch MED17 engine management documentation and reputable catalogues such as Autodata/HaynesPro and OEM parts listings, this model runs an electronic throttle body with dual-redundant throttle position sensors (TPS) built in. So yes — throttle-position-sensors are relevant and fitted to the 2018 Haval H6.

On the 2018 H6, the throttle-position-sensors tell the engine control unit precisely how far the throttle plate is open. Working alongside the accelerator pedal position sensor, they let the ECU manage air flow, fuel, ignition and boost for smooth take-off, clean idle and decent fuel economy. The H6’s design uses two TPS tracks inside the throttle body for safety, the ECU constantly cross-checks them, and if readings don’t agree, it’ll throw a code and likely drop into limp-home mode.

Typical signs the TPS side of the throttle body needs attention include: erratic idle, hesitation on tip-in, surging, poor fuel consumption, stalling at lights, a stubborn high idle, or a lit MIL with codes like P0121–P0123 or P2135. Because the sensors are integrated, many H6 variants don’t offer the TPS as a separate service part — the fix is usually to replace the throttle body assembly and then perform an adaptation/reset with a scan tool.

As part of regular servicing, it’s smart to keep the throttle body clean. Every 40,000–60,000 kilometres, inspect and carefully clean the bore and plate with proper throttle body cleaner. Don’t force the butterfly by hand and don’t soak the electronics. A fresh gasket is recommended if the body is removed. After cleaning or replacement, carry out a throttle relearn/adaptation using a capable scan tool, some vehicles will self-learn after key cycles, but a guided procedure is more reliable.

Replacement pointers for workshops and savvy owners:

• Confirm faults with live data — both TPS tracks should move smoothly and agree within spec through the pedal range.
• Check for intake leaks and carbon build-up before condemning the part.
• If replacing, match the throttle body by VIN, torque fasteners to the service manual spec and avoid pinching the gasket.
• Complete a TPS/throttle adaptation and clear codes, road-test to verify stable idle and crisp response.

Treat the TPS-equipped throttle body kindly and the 2018 H6 will reward with tidy drivability and fewer surprises at the servo.

Popular questions about 2018 Haval H6 throttle-position-sensors

Does the 2018 Haval H6 actually have a throttle-position-sensor?
Yes. The 2018 H6 uses an electronic throttle body that houses dual throttle-position-sensors, monitored by the ECU for accuracy and safety.

Can the TPS be replaced on its own, or is it part of the throttle body?
On most 2018 H6 variants the TPS is integrated and not sold separately. Replacement typically means fitting a new throttle body assembly and performing a throttle adaptation.

What’s the best way to reset or relearn the throttle after work?
Use a scan tool that supports Haval/GWM to run the throttle adaptation routine. While some vehicles relearn after battery disconnect and key cycles, a guided adaptation delivers more consistent results.