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YUCHAI YC4FQ & YC4EG Engine Exhaust Gas Temperature Sensor YV2100-1205130
Installation Location (SCR After-treatment System)
In a standard Yuchai China VI after-treatment (DPF + SCR) assembly, this sensor is typically installed in one of the following three locations:
1. Pre-/Post-DOC exhaust temperature sensor: Used to monitor the efficiency of the Diesel Oxidation Catalyst (DOC).
2. Pre-/Post-DPF exhaust temperature sensor: Used to determine whether the Diesel Particulate Filter (DPF) has reached the temperature required for active regeneration.
3. SCR inlet exhaust temperature sensor: Used to control the threshold temperature for initiating urea injection; injection is typically permitted only when the exhaust gas temperature exceeds 180°C–200°C.
Common Related Fault Codes (OBD Diagnostic Alerts)
1. P0420 / P0430: Catalyst efficiency below threshold (AdBlue injection inhibited due to inaccurate exhaust temperature data)
2. P0544 / P0546: Exhaust gas temperature sensor circuit voltage high/low (wiring harness open or short circuit)
3. P1421: DPF regeneration temperature fails to reach required level (sensor performance drift, resulting in low temperature readings)
Sensor Core Components
| BOM ID | Part Name | Core Specifications / OEM Cross-Ref | Qty |
|---|---|---|---|
| BOM-01 | Exhaust Gas Temperature Sensor Assembly | YV2100-1205130 (4-Wire with module, High-precision thermocouple) [YV2100-1205130] |
1 pc |
| BOM-02 | Connector Pigtail Repair Kit | 4-Pin automotive-grade waterproof wire harness connector | 1 set |
Mounting & Sealing Hardware
| BOM ID | Part Name | Core Specifications / Torque Standard | Qty |
|---|---|---|---|
| BOM-03 | Anti-Seize Lubricant | High-temperature 1000°C nickel-based or copper-based paste | 1 pc (Field apply) |
| BOM-04 | Conical Hermetic Metal Gasket | High-temperature resistant stainless steel washer fitting M12/M14 threads | 1 pc |
| BOM-05 | Stainless Steel Cable Ties | Heat-resistant 304 stainless steel buckle-type zip ties | 2-4 pcs |
Associated Manifold Hardware
| BOM ID | Part Name | Core Specifications / Backup Notes | Qty |
|---|---|---|---|
| BOM-06 | Temperature Sensor Weld Bung | 310S High-temperature stainless steel / Threads match original spec | 1 pc |
DETAILS
| DESCRIPTION | Exhaust Gas Temperature Sensor | PART NUMBER | YV2100-1205130 |
| WEIGHT | 0.5kg | VOLUME | 85 mm × 55 mm × 28 mm |
| TRUCK MOLDE | YUCHAI | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | engine |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
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