Parts for your 2017 Haval H6-Throttle position sensors

2017 Haval H6 throttle-position-sensors (TPS) — what’s fitted and what it does

For the 2017 Haval H6, a throttle-position sensor is absolutely relevant and used. The model runs an electronic throttle body (drive‑by‑wire) that integrates dual, redundant throttle-position sensors. This is documented in Haval/H6 workshop literature for the engine control system’s Electronic Throttle Control, and reflected in Great Wall Motors’ parts catalogues, which list a complete throttle body assembly with the position sensors built in for both the 2.0‑litre turbo‑petrol and 2.0‑litre turbo‑diesel variants. Standard OBD‑II diagnostics for this vehicle family include TPS‑related fault codes (such as P0120–P0124 and P2135), confirming the ECU actively monitors throttle angle.

• Haval H6 (2017) workshop manual: Electronic Throttle Control section notes an electronic throttle body with redundant position sensors.
• Great Wall Motors/Haval parts catalogue: Throttle body assembly includes the position sensor(s) for GW4C20 petrol and GW4D20 diesel engines.
• OBD‑II diagnostics used on H6: TPS/APP DTCs (e.g., P0121, P0122, P2135) applicable to this platform.

On the 2017 Haval H6, the throttle-position sensor (TPS) is built into the electronic throttle body and constantly reports the throttle plate angle to the engine computer. That live angle data lets the ECU manage air, fuel and spark, smooths out idle, coordinates the auto transmission, and keeps cruise control and stability systems happy. It’s a dual-track sensor for safety, so the ECU can compare the two signals and catch faults before they turn into drama.

What gives the game away when a TPS is on the fritz? Think uneven idle, delayed throttle response, sudden limp mode, harsh shifts, surging, stalling at the lights, or a glowing check‑engine lamp. A scan will often show TPS or correlation codes. Because the sensor is integrated into the throttle body, contamination and sticky throttle plates can set off the same symptoms.

As part of routine servicing, it pays to inspect and, if needed, clean the throttle body every 30,000–60,000 kilometres. Use a proper throttle‑body cleaner, keep the spray away from the sensor cavity, and don’t force the plate open by hand. Check the connector for pin tension, corrosion and moisture, and make sure battery voltage and grounds are solid — low voltage can mimic sensor faults. A quick scan to review live data (throttle angle, pedal input, idle target) is a tidy way to catch issues early.

Replacement is straightforward but precise: the TPS is not a separate item, it comes with the throttle body. Disconnect the battery, remove the intake duct, unplug the connector, and unbolt the unit. Fit a new gasket/O‑ring, torque the bolts evenly, and avoid twisting the plate. Most H6s will need a throttle adaption/relearn using a scan tool (or a key‑on idle relearn, depending on software) so the ECU knows the new closed and open positions. After that, clear codes, let it stabilise at idle, and take it for a calm drive to confirm smooth behaviour.

Does the 2017 Haval H6 have a separate TPS, or is it built into the throttle body?

It’s built in. The H6 uses an electronic throttle body with two internal TPS tracks, plus separate accelerator pedal position sensors. If the TPS fails, the whole throttle body assembly is typically replaced.

What symptoms point to a bad TPS on a 2017 H6?

Common signs include erratic idle, hesitation, sudden limp mode, poor fuel economy, and a check‑engine light. Scans may show TPS or correlation codes (like P0121 or P2135). Cleaning a sticky throttle body can help if contamination is the culprit.

Does the TPS/throttle body need calibration after replacement or cleaning?

Yes. Most H6s require a throttle adaption/relearn so the ECU stores the new closed and open angles. This is best done with a scan tool, though some vehicles relearn after a key‑on/idle routine. Always clear codes and verify stable idle and smooth response.