Why is my OBD2 device not connecting to the ECU?

My OBD2 device does not connect to the ECU – Sometimes, when this happens, it does not directly imply that the vehicle is not compatible. Usually the software is configured to test the connection protocolsautomatically and always in the same order. This can cause it to remain in a closed loop trying to connect to an inappropriate protocol.

What to do if the OBD II scanner doesn’t communicate with the vehicle?

What to do if the OBD II scanner doesn’t communicate with the vehicle. TEST 1: Connect the positive DMM lead to DLC pin 4 and the negative DMM lead to the negative battery terminal, using jumper wires if necessary. Do not connect to the body or chassis ground but to the battery terminal directly.

Why is my OBD2 not connecting to YouTube?

These issues include an incompatible obd2 scan tool, bad fuses, damage in the circuit board, ECU, and failed computer. OBD-II…. Non connecting data Port Issue. *FIXED* This might help you! – YouTube OBD-II…. Non connecting data Port Issue. *FIXED* This might help you! If playback doesn’t begin shortly, try restarting your device.

Is the CAN bus connected to the ECU?

My 420R 2017 Caterham has only one CAN bus device, the ECU. It seems that other cars (such as Sigma engined cars also have the rev-counter connected to the CAN bus – but not on my Duratec car).

Why is my OBD2 scanner not connecting to ECU?

OBD2 scanner won’t connect to ECU follow these easy steps – YouTube OBD2 scanner won’t connect to ECU follow these easy steps, try these steps to see if this is why your scanner won’t pull any codes.HELP SUPPORT THE CHANNEL-…

How is the CAN bus connected to the OBD plug?

The high-speed CAN bus or C-CAN is connected to pins 6 and 14 of the OBD plug and the low-speed CAN bus or B-CAN is connected to the pins 1 and 9 of the car OBD plug. This setup is implemented on Punto EVO, Punto 2012, Grande Punto, Doblo (263), Fiorino (225), Fiat 500/500L/500X, Alfa Mito, Alfa Giulietta, Ducato (255):

Is there an OBD 2 protocol for ECU?

Fortunately, there is one protocol that does seem to be reasonably well followed by most car manufacturers and that gives us something to start with. That protocol is often known as OBD-II (OBD 2). We’ll go into more detail about the protocols supported by the MBU 9A4 in a future post.

My 420R 2017 Caterham has only one CAN bus device, the ECU. It seems that other cars (such as Sigma engined cars also have the rev-counter connected to the CAN bus – but not on my Duratec car).