Description
CHOYOE • OBD2 Automotive Diagnostic Tool V318
The CHOYOE V318 OBD2 automotive diagnostic tool is a portable engine fault code reader designed for professionals and enthusiasts who require reliable diagnostics across all OBD II/EOBD vehicles since 1996. Featuring a vivid 1.8-inch color display, this plug-and-play elm327-based instrument supports real-time vehicle information, battery voltage monitoring, freeze frame data, and essential emission tests such as O2 sensor and EVAP system analysis. The rugged construction meets CE, FCC, RoHS, UKCA certifications for safety and reliability in workshops or roadside environments.
Key benefits
- Reads and clears generic, pending, and manufacturer-specific diagnostic trouble codes swiftly
- Displays live data, real-time curves, and I/M readiness status for emissions compliance
- Monitors battery voltage in real time and supports O2 sensor and EVAP system testing
- Built-in DTC code lookup library offers immediate explanation for check-engine alerts
- Supports communication across all nine standard OBD2/EOBD protocols used in most 1996+ US, EU, and Asian vehicles
- Compact, high-contrast color screen with insulated cable for safe, durable operation
Supported protocols
- SAE J1850 PWM
- SAE J1850 VPW
- ISO 9141-2
- ISO 14230-4 KWP (5-baud & fast init)
- ISO 15765-4 CAN (11/29-bit IDs at 250/500 kbaud)
Supported functions
Depending on vehicle compatibility, the following functions are supported:
- Read diagnostic trouble codes (DTCs): generic, pending, manufacturer-specific
- Erase codes and clear the check engine light
- View freeze frame data capturing vehicle state at fault occurrence
- I/M readiness check for emission system status
- Retrieve vehicle information like VIN, CIN, CVN
- Live data stream and real-time curve visualization
- Oxygen sensor testing; engine battery voltage readings; fuel evaporation control (EVAP) testing
Included items
- 1 × V318 OBD2 automotive diagnostic tool (code reader)
- 1 × instruction manual
Supported languages
English, German, French, Spanish, Italian, Russian, Dutch, Chinese, Japanese, Korean


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