Euro 5 Sinotruk Howo Euro 5 NOx Sensor Emulator
The Sinotruk Howo Euro 5 NOx Sensor Emulator permanently eliminates NOx-sensor fault codes and engine power derate on Euro 5 Howo trucks — no expensive sensor replacement required.
Sinotruk Howo is a Chinese heavy-duty truck that has earned a strong reputation for durability in demanding haulage and construction transport roles. Like all Euro 5-compliant diesels, the Howo relies on an SCR system to manage exhaust NOx levels — and the NOx sensors in that system are exposed to high exhaust temperatures, heavy soot loading and constant vibration. Over time they drift out of calibration or stop reading altogether. When a sensor fails, the engine control unit logs permanent fault codes, derates engine power and effectively traps the truck in a reduced-speed band. With a long lead time and high replacement cost for an OEM Howo NOx sensor, the truck can sit idle for days. The Sinotruk Howo Euro 5 NOx Sensor Emulator resolves the fault electronically, permanently and immediately.
How Does It Work?
The emulator plugs directly into the NOx sensor socket on the Howo's engine without cutting any wires or soldering any connections. Once installed, it continuously generates the upstream and downstream exhaust NOx concentration readings, sensor heater status and reference voltage signals that the ECU expects to see from a healthy sensor. With consistent, in-range data arriving at all times, the engine control unit does not record any NOx-related fault codes and does not impose a power restriction.
Frequently Asked Questions
Is this emulator compatible with all Sinotruk Howo Euro 5 engines?
It is compatible with Sinotruk Howo diesel models fitted with Euro 5 emissions equipment. We recommend confirming your engine and ECU details via an OBD diagnostic tool, your vehicle registration or service records before ordering.
How long does installation take and is specialist labour required?
Installation is plug-and-play — the emulator connects to the NOx sensor socket with no wire cutting or soldering. It typically takes just a few minutes and can be completed with basic hand tools.
If I remove the emulator later, does the truck return to its original state?
Yes. The emulator is fully reversible; unplugging it returns the truck to its original sensor configuration. No permanent hardware modification is made.
Are there any legal considerations I should be aware of?
Interfering with an emissions control system may be subject to road-traffic and environmental legislation in your country. This product is supplied for closed-circuit, off-road, testing and diagnostic purposes only; legal responsibility rests with the end user.
Supported Models
This emulator is compatible with the following models that share the same ECU platform: