Parts for your 2020 Haval H6-Crank angle sensor

2020 Haval H6 crank-angle-sensor: purpose, servicing and replacement

Based on technical references including the Haval H6 workshop manual (Engine Electrical – Crankshaft Position/Crank Angle Sensor section for 2017–2020 models), the Great Wall Motors electronic parts catalogue for H6 (2019–2020) listing the crankshaft position sensor, and standard OBD-II diagnostics (DTCs P0335–P0339 applicable to the H6 ECU), the 2020 Haval H6 is fitted with and relies on a crank-angle sensor. It’s a core input for the engine control unit and absolutely relevant to this model.

The crank-angle sensor on a 2020 Haval H6 tells the ECU exactly where the crankshaft is and how fast it’s spinning. That live data is used to time fuel injection, spark, and start-up, and to keep variable valve timing, idle control, and boost strategies behaving themselves. Without a clean crank signal, the engine can be hard to start, run rough, misfire, stall when hot, or throw the Check Engine light with codes like P0335. On the H6, the sensor typically sits on the engine block at the transmission bellhousing, reading a toothed wheel on the crank, some engine variants place it at the front cover by the crank pulley. Either way, it’s a non-contact sensor that needs a clean air gap and solid wiring to do its thing.

As part of regular servicing, the sensor isn’t a scheduled replacement item, but it’s smart to give it and its loom a once-over: check the connector for oil ingress or corrosion, make sure the harness isn’t rubbing on brackets, and look for leaks that could contaminate the tip. If the vehicle shows intermittent stalling when hot, long cranks, or rpm dropouts on a scan tool, test the crank-angle sensor before throwing coils or pumps at it.

When replacement’s on the cards, go for a quality OE or reputable aftermarket unit. Disconnect the battery, clean the mounting face, and fit the new sensor, tightening to the manufacturer’s spec. Keep metal filings away from the tip and route the wiring exactly as from factory to avoid heat soak or interference. After installation, clear fault codes and perform a crankshaft position relearn if the scan tool/ECU for the H6 supports it, many will relearn automatically after a few warm-up cycles. A short road test under different loads will confirm the rpm signal is stable and the engine’s back to smooth, drama-free running. That’s peace of mind under the bonnet for many more kilometres.

• Common signs of trouble: hard starting, random stalling, misfires at cruise, no tach movement while cranking, and DTCs P0335–P0339.
• Good practice: inspect at service intervals, protect connectors from water, and fix oil leaks near the sensor promptly.

Where is the crank-angle sensor on a 2020 Haval H6?

On most 2020 H6 petrol variants, it’s mounted on the engine block at the gearbox bellhousing, reading a reluctor on the flywheel/crank. Some engines place it at the front timing cover near the crank pulley. If visibility is tight, removing the undertray can help spot the connector and lead.

What are the symptoms of a failing crank-angle sensor, and can it be driven?

Expect long cranks, sudden stalls when hot, misfires, rough idle, and a Check Engine light with P0335-type codes. Driving can be unpredictable, the engine may cut out without warning. It’s best to get it diagnosed and sorted rather than soldiering on.

Does a 2020 Haval H6 need a relearn after replacing the crank-angle sensor?

Many ECUs will relearn automatically after a few key cycles and a normal drive. Some service tools offer a crank position relearn procedure—worth doing if available to speed up adaptation and ensure stable idle and smooth starts straight away.