Check engine light

traveyb · 1 Jun 2014 at 19:26

So, jumped in my car ready to drive home from the other half's and noticed the check engine light stayed on (welp). Got home ok (only a 3 mile drive) and plugged my cheap ODB reader in and got this from one app:

P0642 - Sensor Reference Voltage 'A' Circuit Low
P1500 - blank

And just the P0642 from the other.

I have a 2006 Audi A3 2.0 TFSI DSG and bought the Audi extended warranty (which should cover it), so will give them a call tomorrow. Do you think I will be ok driving it for a couple of days?

q6600 · 1 Jun 2014 at 19:33

http://engine-codes.com/p0642_audi.html

http://www.audiforum.ca/audi-a4-9/audi-specific-diagnostic-trouble-codes-dtc-53424/#post127628

traveyb · 1 Jun 2014 at 20:12

Cheers for that, will get it booked in asap. Just hope it's ok for a day or 2 (and that I can have a courtesy car)

traveyb · 2 Jun 2014 at 07:23

Well the light was off this morning, code is still there if I scan it. Does that means it's still an active fault or does it just stay there?

AshD93 · 2 Jun 2014 at 08:09

Will stay in stored faults until cleared. Normally the car clears the light if the fault does not reoccur within x time dependant on the fault.

PS. As its a Audi, a VAG-COM scan will give you much more detail if all you've done is OBD. Though you have warranty so who cares in reality lol.