V521
Engine diagnostics with live data for faster fault confirmation
V521 combines engine fault diagnosis with MIL clearing and live data stream viewing, helping users validate symptoms while the vehicle is running. Freeze Frame and I/M Readiness support add more context for basic inspection and emissions-related checks.
Engine Fault Diagnosis
Engine fault diagnosis to support faster issue recognition and clearer next steps—reduces guesswork when a driver sees an engine warning.
Clear MIL
Clear the engine warning light where permitted after resolving the issue—useful for validating repair outcomes and reducing repeat visits.
Live Data Stream
Real-time data stream viewing to observe key parameters live and validate symptoms as they occur.
I/M Readiness
I/M Readiness indicates emissions monitor status to support inspection preparation and emissions troubleshooting (where supported).
PRODUCT SPECIFICATIONS
Functions
- Engine fault diagnosis (Engine fault diagnosis)
- Clear MIL (Clear the engine warning light)
- Freeze Frame (Freeze frame)
- I/M Readiness (I/M readiness)
- Vehicle Info (Vehicle information)
- Live Data Stream (Live data stream)
- Battery Voltage Monitoring (Battery voltage monitoring)
- Mode 6 Test (Mode 6 test)
- O2 Sensor Test (Oxygen sensor test)
- Mode 8 Test (Mode 8 test)
- DTC Lookup (DTC lookup)
- Data playback
- Cloud Print (QR) (Cloud printing)
- Vendor-specific codes: added secondary languages; supports Chinese, English, German, French, Spanish, Italian, Polish, Portuguese (8 languages)
- Vendor-specific codes supported brand count increased from 48 to 55
- 40,000+ DTC library (DTC library: 40,000+ entries)
- 2.8" color screen (2.8-inch color display)
- Performance tests: acceleration test, brake test, distance test, dashboard data (includes: load value, coolant temperature, total mileage,
- instantaneous fuel consumption)
OBD-II Protocols
- SAE J1850 PWM（41.6 Kbaud）
- SAE J1850 VPW（10.4 Kbaud）
- ISO 9141-2（5 baud init,10.4 Kbaud）
- ISO 14230-4 KWP（5 baud init,10.4 Kbaud）
- ISO 14230-4 KWP（fast init,10.4 Kbaud）
- ISO 15765-4 CAN（11bit ID,500 Kbaud）
- ISO 15765-4 CAN（29bit ID,500 Kbaud）
- ISO 15765-4 CAN（11bit ID,250 Kbaud）
- ISO 15765-4 CAN（29bit ID,250 Kbaud）
Data PIDs
- Read DTCs
- Clear DTCs (MIL off)
- Engine RPM
- Calculated load value
- Coolant temperature
- Fuel system status
- Vehicle speed
- Short-term fuel trim
- Long-term fuel trim
- Intake manifold pressure
- Timing advance
- Intake air temperature
- Mass air flow rate
- Throttle position (absolute)
- O2 sensor voltage (w/ STFT)
- Fuel pressure
- Fuel consumption monitoring (etc.)
- Note: supported data items vary by vehicle model year and ECU.
Hardware Specs
- MCU: APM32E103VET6, LQFP100
- Working voltage: DC 9–16 V
- Operating current: 34–51 mA
- Standby current: 30 mA
- Communication: serial communication
- Interface: OBDII
- Operating temperature: -20 to 60°C
- Storage temperature: -20 to 60°C
- Dimensions: 173 × 91.7 × 25 mm
- Weight: 309 g; 437 g (with packaging)
OBD Connector
- OBD male connector (standard 16-pin OBDII interface).
| Pin | Description | Pin | Description |
|---|---|---|---|
| 1 | Single Wire CAN | 9 | Reserved |
| 2 | J1850+ | 10 | J1850- |
| 3 | Reserved | 11 | Reserved |
| 4 | Chassis ground | 12 | Reserved |
| 5 | Signal ground | 13 | Reserved |
| 6 | CAN High (CANH) | 14 | CAN Low (CANL) |
| 7 | K-Line | 15 | L-Line |
| 8 | Reserved | 16 | Power |
Compliance & Packaging
- Certifications: CE, FCC, RoHS, UKCA
- Outer carton size: 42.5 × 31 × 33.3 cm
- Quantity per carton: 30 pcs/carton
- Retail box size: 202 × 102 × 58 mm
- Storage conditions: store in a clean, ventilated, cool, and dry place; keep moisture-proof.
- Transportation & handling: ship in cartons; handle with care; avoid heavy vibration, shock, or compression; prevent contamination and package damage; protect from rain and direct sunlight; suitable for road, rail, sea, and air transport.
- Care & safety notes: do not use abrasive cleaners; do not heat or place near open flames; do not expose to direct sunlight for long periods; do not disassemble or modify (no user-serviceable parts).
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Technical Documents
Support Guides
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Standard Packaging
- Standard package contents: V521 handheld scanner main unit ×1; user manual ×1; individual retail box ×1.
- Accessories and detailed packing list can be customized for OEM/ODM and private-label orders.
MOQ & Pricing Structure
- Sample MOQ: 1–10 pcs
- Standard (bulk) MOQ: 100 pcs
- White-label / OEM MOQ: 500 pcs
- ODM MOQ: 5,000 pcs
- Note: MOQs may vary based on packaging and customization scope.
- Pricing: sample price + tiered volume pricing. Contact us for a quotation: info@drovewest.com.
Sample & Lead Time
- Standard items (no customization): ship-out within 1–3 business days after payment confirmation.
- White-label / OEM: ship-out within 5 business days after payment confirmation and final approval of branding/customization files.
- ODM: ship-out within 25 business days after payment confirmation and final approval of customization files.
- Tracking: courier tracking typically becomes active within 1–3 business days after ship-out (handover / consolidation time).
Customization Options (OEM/Private Label)
- Branding (White-label): logo printing (silkscreen) or label/sticker service.
- Documentation & packaging: customized user manual and retail box packaging.
- Appearance options: housing color customization (project-dependent).
- ODM (project-based): industrial design / enclosure appearance customization.
Quality, Warranty & Compliance
- Warranty: 1 year replacement.
- Warranty coverage: manufacturing defects under normal use; exclusions include misuse, unauthorized modification/repair, and damage caused by improper installation or accidents.
- DOA / RMA support: issue reporting, diagnostics, and replacement/return handling are available based on case evaluation and order terms.
- Quality system: ISO 9001 certified.
- Quality control: incoming inspection, in-process QC, and final inspection applied to production batches.
- Traceability: batch/lot tracking is available; unit-level serial number (SN) labels / barcodes can be provided for white-label/OEM orders upon request.
- Compliance: certification status and compliance documents (e.g., CE/FCC/RoHS/UKCA) can be provided upon request and may vary by product version, batch, and target market requirements.
Shipping & Carton Info
- Shipping: UPS / DHL / FedEx express door-to-door (DAP by default; consignee handles import clearance and duties/taxes).
- Duty-paid option (DDP, air door-to-door): available upon request. We can quote and pre-collect freight + duties/taxes where supported.
- HS Code (reference): 9031.80.9090 (may vary by destination country).
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Source with OEM Options — Fast & Reliable
Get OEM pricing, MOQ, lead time, and a sample plan — we’ll respond within 24 hours with a quote-ready offer.
- OEM / Private Label: logo, housing, packaging
- Stable Supply: consistent batches & QC support
- Documentation Pack: spec, manual, FAQ, troubleshooting
- Compliance Docs: CE / FCC / RoHS (on request)
- Pre-sales Support: compatibility check & RMA process
Request a Quote
Share quantity + OEM requirement to receive pricing & lead time.
No commitment. We’ll recommend the best configuration and packaging for your channel.
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