Originally Posted by SupratikDebnath
My friend's Swift DDiS VDi is showing some issues now.
Check Engine light is staying ON even after firing up the engine.
Maruti service center has diagnosed and found two error codes:
P0403 EGR valve controller circuit
P0180 fuel temperature sensor circuit
Even after all options were tried out by them, the issue still exist.
The car is behaving fine and there is absolutely no behavioral change whatsoever.
Please help out and share your views.
Haven't they cleaned EGR valve or replaced the circuit when you reported this issue ? Usually MASS will not clean this, they replace the part if it has reached EOL cycle. Check this with them, both sensors and circuits are replaced if they throw issues.