Dashboard warning lights stay on but OBD2 scanner shows no errors
Car diagnostic scanners often fail to show fault codes for dashboard warning lights if the scanner only checks the basic engine module rather than specialized ABS or power steering systems. This leaves drivers unable to clear persistent lights like EPS or ESP, even when trying basic resets like disconnecting the battery. To locate the hidden fault, you need an advanced OBD2 tool capable of reading specific system codes beyond standard OBD2 engine trouble codes.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Turning on the engine to see if the lights turn off
- 2Checking if the lights go away once the motor is running
- 3Unplugging the battery
- 4Reconnecting bulbs and trying with old bulbs
- 5Scanning with generic OBD2 scanners
- 6Checking warranty extensions for specific parts
- 7Getting the vehicle checked out by a mechanic
- 8ignoring the warning message
- 9Checking the physical or online owners manual
- 10Asking for interpretations in online automotive forums
- 11wiggle the connector near the filter housing
- 12unplug the battery and clean the connector with contacts cleaner
- 13guessing the underlying cause or replacing common parts
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“I have the same thing on mine. Pretty sure the sensor is broke or something because my horn doesn’t work either…”source ↗
“Ive noticed this red airbag symbol pop up on my dashboard while im driving my 2012 Chevrolet captiva, it only comes on when i start driving for a few mins, also i noticed it a day before the day i was angry and hit the logo on the steering wheel.”source ↗
“This just came up on my dash !! What does this mean i have to do ? Please help :>”source ↗
“I recently change all front bulb light and I realise my light are inverted between off and low beam, I unplug battery, reconnect all bulb, try with old bulb, on the OBD2 I Have 0 error”source ↗
“on my Dashboard I have EPS and ESP light constantly ON, but with the ODB2, I scan with 2 different scanner and both see 0 error”source ↗
“In my Aveo the airbag symbol appears after I change my cabin filter, located inside the glove compartment. It seems there is a connector near the filter housing and if it is touched or moved then the Airbag fault will be displayed in the dashboard.”source ↗
“What can be the issue?”source ↗
“Today my dash popped up with this not sure what it means can you guys help me out I would appreciate it !”source ↗
“Genuinely don’t know what to do. Very worried about what this might do to me.”source ↗
“I drive a 2014 Kia Soul and i have this light that stays on i believe its for my selt belt but no one is sitting in the passenger side and the light stays on”source ↗
Where this came up
People with this problem also raised
- 2Why do multiple dashboard warning lights come on together?
- 15How to handle random car error codes and weird driving feelings
- 2Is it safe to drive with the ABS light on?
- 3Red coolant warning light turning on while idling
- 5Why does my car battery warning light flicker on and off?
- 2Why does the check engine light come back on after replacing a sensor?