Operation Manual

Error Messages and Alerts (continued)

ELM327 will print the word STOPPED. If you should

see this response, then something that you have done

has interrupted the ELM327. Most people see it

because they have not waited for pin 15 to go high, or

for the prompt character (‘>’) to be displayed before

starting to send the next command.

Note that short duration pulses on pin 15 may

cause the STOPPED message to be displayed, but

may not be of sufficient duration to cause a switch to

Low Power operation.

UNABLE TO CONNECT

If you see this message, it means that the ELM327

has tried all of the available protocols, and could not

detect a compatible one. This could be because your

vehicle uses an unsupported protocol, or could be as

simple as forgetting to turn the ignition key on.

If you are sure that your vehicle uses an OBDII

protocol, then check all of your connections, and the

ignition, then try the command again.

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ELM327

ELM327DSJ Elm Electronics – Circuits for the Hobbyist