Dual Alternator Voltage Reading

[porteri@email.sc.edu]

Hey guys, I have the dual alternator set-up and just replaced both batteries with 850cca Motorcrafts. My check engine light came on with a DTC that read there's a voltage error, either <10V or >16V. However, when I put my voltmeter on the batteries with the truck running I was registering 13.1 on both batteries, but I figured it should be a little higher than this with dual alternators. What do you guys get with duals?

[CrazyCowboy]

I get 14.1

[RUFFSTUFF]

Make sure all connectors are making good contact with the battery terminals. Especially on the inside of the connectors where corrosion products tend to build up and make a high-resistance connection.