Hi all,

I want to be able to check for OBD error codes in my 2025 Monte Carlo. I already have an OBD2 ELM327 Bluetooth Device if that helps. We also have Android Devices in the home.

I don't want to do anything but read the error codes, so what would I require?

TIA

Have you installed any app on for the dongle yet? TorquePro is pretty good, just pay the small fee for it and it will scan for codes. You can then also live catalog while driving if you are having a recurring issue, you can use the logging pinpoint what was happening when the issue arises.

OBD11 is another good app, though I haven’t used it myself, if it’s compatible with your dongle. You also use that one for codes etc and do stuff like change certain settings.

5 minutes ago, mac11irl said:

Have you installed any app on for the dongle yet? TorquePro is pretty good, just pay the small fee for it and it will scan for codes. You can then also live catalog while driving if you are having a recurring issue, you can use the logging pinpoint what was happening when the issue arises.

OBD11 is another good app, though I haven’t used it myself, if it’s compatible with your dongle. You also use that one for codes etc and do stuff like change certain settings.

Thanks for your reply.

I tried Torque Lite but it will not download, says it is not compatible with my phone (Pixel 4a Android 13) Maybe the Pro version will work, I will give that a go.

that lite version is very old, last update was in 2018.

use normal torque pro, i think 3$.

You need to be aware, to avoid scaring yourself, that the car will collect lots of error codes all the time. The ECU then makes a judgement, based on programming, about how serious the code is.

To use the jargon, if the code becomes persistent then a warning light will appear on your dashboard.

If the code is a transient, then despite the fact it is recorded it will not trigger a warning light. However, several of the same transient within a time period will cause a warning light. I can't be more specific as the manufacturer decides the time period and number of codes within that period. To make it worse it will be different for every type of fault code. Eventually transients are erased by the ECU.

Thanks everyone for your input.

Question - I've had an issue with a front blinker that gave a warning on the dash until I turned the car OFF. That warning has now disappeared. Will the error still be in OBD?

You had a bulb fail warning only or you had a bulb fail warning and the bulb was failed / not working as it should?

To answer the question, there are two levels of fault code, one is universal, it means the same irrespective of make and model of car. The second level is manufacturer specific, these codes may or may not be recorded in the car memory. Generally codes that effect engine / drivetrain life and or emission control and or safety are recorded. Something light a failed light is more of a grey area as it easy to see the bulb has gone or not.