Parts for your 2018 Haval H6-Camshaft sensor

2018 Haval H6 Camshaft Sensor — Purpose, Service Tips, and Replacement Advice

Yes, the 2018 Haval H6 uses a camshaft position sensor. Technical references that cover the model’s turbocharged petrol engines (GW4G15B 1.5T and GW4C20B 2.0T) — including the Haval/Great Wall H6 2017–2018 workshop manual (Engine Control System and Wiring Diagrams) and the official parts catalogue/EPC for these engines — list a camshaft position sensor (CMP) as part of the engine management system. These sources show the CMP feeding the ECU for fuel, spark, and variable valve timing control.

On this H6, the camshaft sensor’s job is to tell the ECU exactly where the camshaft is in its rotation. Paired with the crankshaft sensor, it lets the ECU run true sequential fuel injection, sharpen ignition timing, and phase the variable valve timing under the bonnet. That means quicker starts, smoother idle, better fuel economy, and lower emissions. If the CMP signal goes missing or messy, the ECU can fall back to a limp strategy, causing long cranks, rough running, and a real drop in power.

There’s no fixed service interval for the camshaft sensor — it’s a fit-and-forget item until it isn’t. As part of routine servicing on a 2018 H6, it’s worth a quick look:

• Inspect the CMP connector for oil wicking, corrosion, or a loose fit.
• Check the harness where it runs past the cam cover for rub-through.
• Keep oil changes on time, sludgy oil can aggravate timing components and signal quality.

Common signs it’s on the way out include a hard start when hot, hiccups at idle, hesitation on take-off, and a check-engine light with codes like P0340, P0341, or P0343. A scan tool showing a drop-out in cam sync, or scope traces with a noisy Hall signal, will confirm it.

If replacement’s needed, it’s a straightforward driveway job for many owners. Disconnect the battery, pop the engine cover, unplug the sensor, remove the retaining fastener, and twist the old sensor out. Fit a new O-ring, lightly oil it, seat the new sensor squarely, and tighten the fastener to the correct spec from the workshop manual. Clear codes and, if the scan tool allows, run a cam/crank relearn. Genuine or OE-quality sensors tend to give the best long-term results on the H6.

Popular questions about the 2018 Haval H6 camshaft sensor

Does the 2018 H6 have one or two camshaft sensors?
The 2018 H6 engines have at least one camshaft position sensor. Some variants monitor the intake cam specifically, documentation and parts listings for the GW4G15B/GW4C20B show the CMP on the cam cover with ECU wiring dedicated to cam phase control. Always check by VIN to confirm your exact setup.

Is it safe to drive with a faulty camshaft sensor?
It might run, but it’s not ideal. The ECU can fall back to a basic strategy, which means hard starting, rough idle, and poor fuel use. Continued driving could mask other issues or stress the catalytic converter. Better to diagnose promptly and replace the sensor if it’s the culprit.

What does replacement usually cost and how long does it take?
Parts pricing varies, but owners typically see a reasonable cost for a quality sensor. Labour is modest — often under an hour. Many DIYers can manage it with basic hand tools, provided they follow the workshop spec and take care with the O-ring and connector.