The P0189 is a generic OBD-II powertrain trouble code. Its official definition is “Fuel Temperature Sensor B Circuit Intermittent”.
A WiFi OBD2 scanner offers broader compatibility, especially for iPhone users. Unlike Bluetooth scanners, it connects through WiFi, making it a reliable wireless car diagnostic tool for multiple devices.
All OBD2 Scanners
What is a WiFi OBD2 Scanner
Uses WiFi connection instead of Bluetooth for data transfer.
Benefits
Better iOS support
Stable connection
Multi-device compatibility
Best WiFi OBD2 Scanners
View all WiFi scanners →
How to Choose
Connection stability
Device compatibility
App ecosystem
FAQs
Q: Does WiFi use internet?
A: No, it creates a local network.
Related Guides
The P0186 is a generic OBD-II powertrain trouble code. Its official definition is “Fuel Temperature Sensor B Circuit Range/Performance”.
The P0184 is a generic OBD-II powertrain trouble code. Its official definition is “Fuel Temperature Sensor A Circuit Intermittent”.
The P0179 is a generic OBD-II powertrain trouble code. Its official definition is “Fuel Composition Sensor Circuit High”.
The P0177 is a generic OBD-II powertrain trouble code. Its official definition is “Fuel Composition Sensor Circuit Range/Performance”.
The P0170 is a generic OBD-II powertrain trouble code. Its official definition is “Fuel Trim Malfunction (Bank 1)”.
The P0165 is a generic OBD-II powertrain trouble code. Its official definition is “O2 Sensor Circuit Slow Response (Bank 2, Sensor 3)”.
The P0161 is a generic OBD-II powertrain trouble code. Its official definition is “O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)”.


