hard code in Port A#

tommyo1 · Post by **tommyo1** » 17 Oct 2018, 19:21

Thank you for all the great replies, I have cleared all the codes in ports A1 A2 but A3 still gives me the 141 code, and I can't seem to clear my CEL. I even tried to disconnect my battery but to no avail. Is this a hard code from port A3 or another code that isn't reading causing my check engine light to stay on? My first guess is MAF but It just passed smog a week ago when light was off. The light did come on after driving over outpost canyon coming back from work. And my brakes need done. Not sure if the ABS or brake code causes a hard code in ECU?

Post by **Clemens** » 18 Oct 2018, 01:30

A3 should be the ABS. Are you sure there are no new codes stored in A1 or A6(if A6 has a connector, not all models do.)? Because A1 should be the prime reason for a check engine light. Btw.: the Service light in the lower right corner is not a check engine light, it just reminds you of the yearly tuneup. I just point that out because it has caused confusion in the past.

Post by **RickHaleParker** » 18 Oct 2018, 03:44

A3 is ABS, the MAF has nothing to do with a A3 1-4-1.

A3 1-4-1 is pedal sensor. The brake pedal sensor should be 224-274Ω when released and ignition off.
Dirty connector, open or shorts in the wiring harness can also set A3 1-4-1.

How to Read & Clear Diagnostic Codes — OBDII — 1992-1995 Volvos