The intake flap position sensor was tested and deemed defective but.
Audi a4 check engine light and epc.
1 8t quattro check engine light the epc light keeps going i have a 2001 1 8t quattro audi a4 and the check engine light and the epc light keeps going on.
I checked it with my obii computer and it gave me a p0221 code.
The check engine light may also come on to show that the engine itself isn t operating at normal efficiency.
Due to the nature of the engine shaking while both lights are on this would be due to a loss of fuel or a high volume of fuel to the cylinders.
Second opinion 2014 audi q5 epc light issue pre owned 48 200 miles check engine light comes on intermittently then epc light comes on and the vehicle shuts down after it runs approx 1 5 2 miles read more.
2014 audi q5 epc light issue pre owned 48 200 miles check engine light comes on intermittently then epc light comes on and the vehicle shuts down after it runs approx 1 5 2 miles then the check read more.
The car may feel sluggish as you limp home or to a mechanic.
This audi came in for a epc light and check engine light service engine soon light on.
If your audi check engine light is flashing it is an indication that there is an engine misfire which means fuel is not getting burnt efficiently in the cylinders.
When the epc light comes on there is an issue with the throttle pedal throttle body traction control or cruise control.
To try and protect the engine the computer may send the car into limp mode by limiting the vehicle s throttle and power.