: Can someone tell me what these codes mean?

07-11-05, 10:03 AM
the codes i got out of my 1998 deville were: pcm - p0461,p0463, p0603
ipc b1552
Please tell me what these mean. Thanx

07-11-05, 11:27 AM
P0461 - Fuel Level Sensor Performance
P0463 - Fuel Level Sensor Circuit High Voltage
P0603 - Control Module Long Term Memory Reset
B1552 - Keep Alive Memory (KAM) Error

Last two may be from pulling battery power
Here's where you decifer the DTC's.

07-11-05, 07:18 PM
Which one of these should i be the most concerned about?

07-11-05, 09:15 PM
The first two. They are likely the same problem. I would assume you are having fuel guage problems? If not, clear 'em and see if they return. You didn't mention if they were current or history.

07-12-05, 06:19 PM
They were history.