Service charging system, code po621
Thread Starter
Safety Car
Joined: Nov 2005
Posts: 3,835
Likes: 5
From: Grand Junction Colorado
Service charging system, code po621
I keep getting Service Charging system in the DIC.I've got 13.7-14.2 volts.This code says,F terminal on generator.So I put a new alternator on and nothing for 2 days.Then today it came back again.
Any ideas? I had a BAP burn up my fuse box and put a new 1 in and had no problems for awhile.Till this came up.It ran fine for 2 days of spirited driving. The BAP was wired wrong and that caused the fuse box failure. Thanx.
Any ideas? I had a BAP burn up my fuse box and put a new 1 in and had no problems for awhile.Till this came up.It ran fine for 2 days of spirited driving. The BAP was wired wrong and that caused the fuse box failure. Thanx.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
I had this annoying loud service charging system message and beeps after I installed an underdrive pulley. Just turn off the code with HP Tuners and enjoy life again. I did it a long time ago and have suffered no ill effects.
