27 March, 2025CAT 3126B Fault Code: 41-03 PID: Flash Code 21 SPN: 678 FMI: 3 8 Volt Supply Above Normal The ECM is not receiving a correct throttle signal Share on Facebook Opens in a new window. Tweet on Twitter Opens in a new window. Pin on Pinterest Opens in a new window. Back to blog Leave a comment Name * Email * Comment * Please note, comments need to be approved before they are published.
