Bluetooth Mini Dome ELM327 OBD2 Scanner, Blue

The dome is the pocket-format member of this shop’s Bluetooth scanner line: push it into the OBD2 port under the dash, pair from an Android phone or Windows laptop, and the engine computer opens up. It reads both generic and manufacturer-specific diagnostic trouble codes — over 3000 generic code definitions in the database — displays their meaning in plain language, clears them and switches the check-engine light off.

Live data covers the everyday diagnostic set: engine RPM, calculated load value, coolant temperature, fuel system status, vehicle speed, short- and long-term fuel trim, intake manifold pressure, timing advance, intake air temperature, air flow rate, absolute throttle position, oxygen sensor voltages with their associated trims, and fuel pressure. Two honest boundaries: this listing is not compatible with Nissan vehicles, and Bluetooth Classic pairing covers Android and Windows — iPhone users need the WIFI or Bluetooth 4.0 version instead.

Key features

• Reads generic and manufacturer-specific codes, 3000+ definitions
• Clears codes and turns off the MIL (check engine light)
• Live sensors: RPM, coolant temp, fuel trims, O2 voltages and more
• Compact dome body: 8.2 × 4.6 × 2.5 cm, 58 g
• Bluetooth pairing for Android and Windows devices

Specifications

Supported protocols

• SAE J1850 PWM (41.6 kbaud) and SAE J1850 VPW (10.4 kbaud)
• ISO 9141-2 (5 baud init, 10.4 kbaud)
• ISO 14230-4 KWP2000 (5 baud and fast init, 10.4 kbaud)
• ISO 15765-4 CAN (11-bit and 29-bit ID, 250 and 500 kbaud)

The same scanner also ships in white (CTC5573) and black (CTC5551) — identical electronics, different shell colour, so fleets can colour-code vehicles or households can stop arguing over whose dongle is whose.

Typical applications

• Weekend code checks and check-engine light resets
• Used-car inspections before purchase
• Live-data monitoring on Android with Torque or DashCommand

Samples, packing options, payment terms and warranty conditions are set out in How to Order and Delivery Information.