Parts for your 2019 Haval H6-Map sensor

2019 Haval H6 MAP sensor – what it does and how to look after it

Based on the Haval H6 (2017–2020) workshop literature for the GW4B15 and GW4C20 turbo engines, the Great Wall Motor electronic parts catalogue for H6 of the same years, and Bosch MED17 engine management documentation, the 2019 Haval H6 is fitted with a Manifold Absolute Pressure (MAP) sensor (often called a boost pressure or T-MAP sensor when intake air temperature is integrated). It’s a core input the ECU uses to control fuelling, ignition and turbo boost, so it is absolutely relevant on this model.

The MAP sensor on the 2019 H6 reads the absolute pressure inside the intake manifold (and, on some trims, a second sensor reads charge pressure before the throttle). The ECU combines that pressure with intake air temperature and engine speed to work out how much air is actually getting in. That lets it trim fuel delivery, set spark timing, manage the electronic throttle, and command the wastegate or boost control for smooth, efficient grunt. In day-to-day terms, it helps the H6 feel perky off the lights, keeps fuel use in check on the motorway, and prevents knock under load.

There’s no scheduled replacement interval for the MAP sensor, but they do appreciate a bit of attention. Oil mist from the PCV system and dust can film over the sensing port, skewing readings. A sensible approach for Aussie and Kiwi conditions is to give it a quick inspection whenever the air filter is changed (roughly every 20,000–30,000 km). If it looks grubby, remove it and clean the tip with a proper MAF/MAP-safe electronics cleaner. Don’t poke the diaphragm or use harsh throttle-body solvent. Check the O-ring, the connector pins and the loom for corrosion or chafing while you’re there.

Common clues a MAP sensor is on the way out include lumpy idle, flat acceleration, higher-than-usual fuel use, black smoke on boost, and the check-engine light. Typical fault codes you might see include P0106, P0107, P0108 and, where a separate charge-pressure sensor is fitted, P0236–P0238.

• Replacement tips: depressurise the intake (engine off, cooled), unplug the connector, remove the fixing screw(s), and pull the sensor straight out.
• Lightly lubricate the new O-ring, seat it fully, and don’t overtighten the fastener.
• No coding is usually required, clear any codes and let the ECU idle-learn with a few key-on cycles and a short drive.
• Stick with quality OEM-equivalent parts to avoid dodgy readings that can upset boost control.

Where is the MAP sensor on a 2019 Haval H6?

On the 1.5T and 2.0T engines, the primary MAP/T-MAP sensor is mounted on or near the intake manifold, after the throttle body. Some variants also use a separate charge-pressure sensor on the intercooler pipework. Both may be casually called “MAP”, but the manifold-mounted unit is the key reference for load.

Does a 2019 Haval H6 run a MAF as well?

Most 2019 H6 models use a speed-density strategy (MAP + intake temperature + RPM) and don’t rely on a traditional MAF. Market and trim variations exist, so a quick look at the airbox for a 4–5 pin flow meter will tell the story. Even when a MAF is fitted, the MAP sensor still plays a major role in boost and load control.

What are the tell-tale signs the MAP sensor needs attention?

Rough idle, sluggish response, poor fuel economy, rich running on boost, and a check-engine lamp are common, scan tools often show P0106–P0108 or, for charge-pressure concerns, P0236–P0238. If basic checks (air filter, vacuum leaks, wiring) are fine, a gentle clean or sensor replacement generally sorts it.