FOTON AUMAN Nitrogen Oxide Sensor H0125090101A0

Shandong Shengyue Technology Development Co.,Ltd is one of the most professional foton auman nitrogen oxide sensor h0125090101a0 manufacturers and suppliers in China. Please feel free to buy high quality genuine auto parts at competitive price from our factory.

FOTON AUMAN Nitrogen Oxide Sensor H0125090101A0

Function

1. Real-time monitoring of exhaust NOx concentration: Installed upstream of the SCR catalyst, a zirconia ceramic probe accurately detects the nitrogen oxide content in the exhaust gas, providing real-time data to the engine ECU and aftertreatment ECU.
2. Precise control of urea injection quantity: The sensor signal is fed back to the ECU, enabling closed-loop control – dynamically adjusting the urea (AdBlue/DEF) injection quantity based on NOx levels to ensure efficient reduction of NOx to nitrogen (N₂) and water (H₂O) within the SCR catalyst.
3. SCR system efficiency monitoring and diagnosis: Continuously evaluates SCR catalyst conversion efficiency, urea quality, catalyst aging, and urea nozzle/pump operating status, supporting OBD-II diagnostics, triggering fault codes, illuminating the MIL fault light, and recording data.

4. Emission Compliance and Torque Limiting Protection: When excessive NOx emissions or sensor malfunctions are detected, the ECU enters protection mode to prevent the vehicle from exceeding emission limits on the road or causing environmental pollution.
5. High-Temperature Adaptation and Self-Heating: The probe has a built-in heating element for rapid heating, adapting to exhaust environments from -40℃ to 850℃, and resisting urea crystallization, soot contamination, and vibration shock.

DETAILS

Advantages

1. It boasts excellent response speed and measurement accuracy, enabling real-time and precise capture of nitrogen oxide concentration changes in exhaust gas, providing reliable data for urea injection and ensuring the efficient reduction of nitrogen oxides by the SCR system, thus maintaining long-term stability and compliance of exhaust emissions.
2. Utilizing high-performance zirconia ceramic elements combined with platinum electrodes, it exhibits outstanding high-temperature resistance, corrosion resistance, and thermal shock resistance, allowing for stable operation in extreme exhaust environments and significantly extending its service life.
3. With a built-in efficient heating system and self-cleaning structure, it effectively resists urea crystallization, soot deposition, and dust contamination, keeping the probe surface clean, reducing the risk of blockage, and maintaining long-term signal reliability.

4. Integrating advanced signal processing circuits and anti-interference shielding design, it boasts strong resistance to electromagnetic interference and vibration, maintaining stable and accurate data transmission even under the complex operating conditions of heavy-duty commercial vehicles.
5. Through precise closed-loop feedback control, it optimizes urea consumption and improves overall combustion efficiency, thereby reducing operating costs and extending the service life of related components.

Symptom

1. The MIL (Malfunction Indicator Lamp) on the instrument panel is constantly illuminated or flashing, often accompanied by warning messages or text related to the urea system. The vehicle enters torque or power limitation protection mode, resulting in noticeably weak acceleration, limited top speed, and insufficient power during uphill driving or under medium to high load.
2. Significant deviations in urea consumption occur: either excessive injection leading to a rapid decrease in urea fluid level, or insufficient injection resulting in almost no consumption. Abnormal white smoke, a strong urea odor, or a pungent ammonia smell is present in the exhaust, especially noticeable during cold starts, idling, or low-load conditions. The urea injector or SCR system may frequently fail to regenerate, accompanied by increased urea crystallization or abnormal fluctuations in exhaust temperature.

3. Use a diagnostic tool to read fault codes related to the NOx sensor, such as the P2200 series (circuit malfunction), P2201/P2202/P2203 (signal anomaly), P20EE (low SCR efficiency), P204F (urea system performance anomaly), or P20EA/P20EB (heating circuit malfunction).

Troubleshooting suggestions

1. When the MIL light illuminates, torque limiting mode is activated, urea consumption is abnormal, there is noticeable white smoke or ammonia odor from the exhaust, or diagnostic tools report fault codes such as P2200 series/P20EE/P204F, replacement should be arranged immediately. Ignoring these issues for an extended period will lead to a continuous decrease in SCR system efficiency, increased urea waste, a greater risk of exceeding emission standards, and may even affect the vehicle's ability to pass annual inspections or roadside checks. Preventive replacement is recommended after accumulating 100,000–150,000 kilometers or 3–5 years of use, in conjunction with proactive OBD diagnostics.

2. Before installation, clean the exhaust pipe thread holes and apply an appropriate amount of anti-seize compound (copper-based or ceramic paste). Control the tightening torque to 40–50 N·m, tightening evenly in 2–3 steps to avoid overtightening and damaging the sensor. It is recommended to install the sensor facing downwards or horizontally to prevent urea fluid accumulation. Clean the connector before plugging it in, and apply conductive protective paste if necessary to prevent oxidation. After replacement, use a diagnostic tool to clear old fault codes, perform forced urea system regeneration or road test verification to confirm that the NOx reading is normal, no new codes are generated, and urea injection is functioning correctly.

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Hot Tags: foton auman nitrogen oxide sensor h0125090101a0, manufacturers, suppliers, factory, parts, genuine, original, Auman high pressure oil pump, Foton Auman turbocharger, Foton truck Silicon Oil Fan