Originally Posted by
oldford
What were the fault codes read from the ESP and Transmission?
Why clean the MAF and risk ruining it, when there's nothing pointing to the MAF?
What's your technician going to do about fault code P0489?
There were no fault codes on the transmission and esp, only the P0489. as far as i know.
He is trying to resolve the EGR issue. But diagnosing the other warnings is the hard part.
I'm using K&N filter and I read somewhere else that oil will stick onto the sensor and we need to clean occasionally. He's trying to look at all possibilities that might cause all warnings came out at the same time.
Could it be sockets or wiring issues as the car still drives fine when there's no warning, which occasionally it happens?