Question

I have a 1998 Dodge Ram 1500 5.9L, what is this code P1492?

Answer 1

Hi there,

This code is "battery temp sensor to high"
The PCM uses the temp sensor to adjust the charge going to the battery. This code can be caused by a faulty battery temp sensor or a bad alternator or PCM.

Answer 2

P1492 DODGE Code - Battery Temperature Sensor Voltage Too high
Read more: https://www.autocodes.com/p1492_dodge.html