What needs to be fixed with code po1492

SOURCE: engine check light

It means that it didn't receive a signal from the transmision module.
Have your transmission control module checked.

To reset your engine codes:
Remove the negative terminal of your battery (10mm wrench).
Turn your ignition key to START and hold it there for about 15 seconds.
Turn your ignition key to OFF and remove it.
Connect the negative terminal of your battery.

TCM (Trans control Module)
(electronic transmission control module)

SOURCE: 2001 Dodge Dakota Engine Light

below is coped directly from Chrysler. sorry but if you have that code you need a PCM

Symptom:

P0601-PCM INTERNAL CONTROLLER FAILURE
POSSIBLE CAUSES
POWERTRAIN CONTROL MODULE
TEST ACTION APPLICABILITY

1 NOTE: This DTC indicates an internal PCM problem.
If there are no possible causes remaining, view repair.

All
Repair
Replace and program the Powertrain Control Module in accordance
with the Service Information.

Perform POWERTRAIN VERIFICATION TEST VER - 2.
38
COMMUNICATION

SOURCE: 2001 dodge dakota 4.7 liter engine codes

Auto Zone will do a free code read and tell you what they are

SOURCE: my 03 dodge dakota keeps giving me a engine light.

CODE PO499 - NVLD CANISTER VENT SOLENOID CIRCUIT HIGH. SOUND LIKE THE NVLD CANISTER VENT SOLENOID IS FAULTY.

SOURCE: 2000 Dodge Dakota check engine light code p455

PO455-EVAP Contol System Leak Detected

Gas Cap
EVAP canister purge valve stuck closed
Loose hoses
Vent solenoid stuck open
Fuel tank pressure sensor
Etc

That should keep you busy for awhile

Best take it to a shop with an EVAP Smoke Machine and Professional Scanner