Charge Voltage too High at 15v
Posted: Sun Sep 17, 2017 10:47 am
Nov 2015 PX2, Smart charge turned off.
Charge voltage usually sits at 14.3 to 14.4.
Yesterday the Ranger decided to charge at 14.9 to 15v - Ultragauge give a voltage too high alarm, voltage confirmed by plug in voltmeter.
After a series of short 20 min runs with short rest between runs the voltage on each run dropped down 14.6 to 14.7 after 1st run, 14.5 after 2nd run and 14.3 to 14.4 (normal) after the last run with a rest before restart.
This morning charging at 14.7v.
Battery only a few months old.
A week ago the Ranger was at the Ford dealer having the crank angle sensor replaced so battery disconnected for a while.
The dealer left a lot of DTC's in the modules from testing stuff, mostly communication between module errors, so I cleared the DTC's using Forscan.
Charge voltage was OK after doing this which was a week ago.
Anyone have any idea, I do not think there is a fault as such and expect it to go back to normal, I have read on another forum of a Ford Focus doing exactly the same thing but no explanation why.
regards
Max
Charge voltage usually sits at 14.3 to 14.4.
Yesterday the Ranger decided to charge at 14.9 to 15v - Ultragauge give a voltage too high alarm, voltage confirmed by plug in voltmeter.
After a series of short 20 min runs with short rest between runs the voltage on each run dropped down 14.6 to 14.7 after 1st run, 14.5 after 2nd run and 14.3 to 14.4 (normal) after the last run with a rest before restart.
This morning charging at 14.7v.
Battery only a few months old.
A week ago the Ranger was at the Ford dealer having the crank angle sensor replaced so battery disconnected for a while.
The dealer left a lot of DTC's in the modules from testing stuff, mostly communication between module errors, so I cleared the DTC's using Forscan.
Charge voltage was OK after doing this which was a week ago.
Anyone have any idea, I do not think there is a fault as such and expect it to go back to normal, I have read on another forum of a Ford Focus doing exactly the same thing but no explanation why.
regards
Max