Emissions test
Emissions test: 7 pieces on carscan.app — what it means, what to look at in the live data and where to start. Open and free, no app needed.
Secondary air: P0410, P0411, P0412 and the emissions test
The car drives fine, fuel use is normal, nothing rattles — yet the check light is on and the emissions test fails. That is what a system working for o
6 September 20264 min
The fuel gauge lies: codes P0460, P0461, P0462, P0463
You filled the tank and the needle did not move — or it drops in jumps. Usually a stuck float in the tank, but there is an unpleasant consequence peop
6 September 20264 min
AdBlue and urea: codes P203B, P2047, P204F, P20EE
The dashboard shows «AdBlue» with a countdown in kilometres and the scanner returns a urea code. The countdown ends with the car refusing to start — a
6 September 20264 min
Catalyst: how long it lasts and how to tell it is dead
P0420 is not a death sentence. What kills a catalyst, how to tell a dead one from a wrongly blamed one, and what actually follows a «delete».
5 September 20264 min
Failed the emissions test: what to do
Turned away at the test station. Here is what exactly failed and which of it is an evening's work.
5 September 20262 min
Inspection readiness: why a healthy car gets turned away
No warning light, yet the station asks you to come back later. What the on-board self-tests are and how to complete them.
3 September 20263 min
Why the service reset does not work on every car
It is easy to promise a reset on every car. We say plainly where it will work and where it will not — and why.
2 September 20262 min