tajturbo

hi peeps iv just brought a 2005 fiesta st with only 62k today. on the mileage display it flash & comes up eac fault . iv put a code reader on and it brings up 3 codes which are ....0073 , 0403 u1900 ? any ideas ???

tajturbo

anyone ????

GVK.

Are they P codes?

tajturbo

yea first 2 are p codes and other comes up has u1900

GVK.

epic fail.

oldford

P0073 - Ambient Air Temperature Sensor Circuit High
This could be a sensor problem or a wiring problem (open circuit)
Doesn't have anything to do with an Oxygen sensor.

U1900 is a Canbus problem which sometimes shows up when there are alternator problems. So, check if the alternator and battery are fine.

GVK.

Can't trust free info from the internet can you?

I've seen recently on Ford when there is a sensor issue that it gives a u code due to invalid data from PCM to other modules (ABS/ESP) unplug a MAF on a modern Ford diesel TCDI and you get such a code for example.

oldford

It's not a problem of trusting info from the internet or anywhere else for that matter.
It's a problem with reading/typing correctly.
I see code seventy three in there, but can't find thirty seven.

GVK.

Oh dear, epic fail - I had not been awake long.

Thanks for spelling it out for me too.