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Trouble code P1391 means: Intermittent loss of CMP or CKP
Trouble code P0441 means: EVAP Purge Flow Monitor Fault
Trouble code P1391 means: Intermittent loss of CMP or CKP
Fault code 16 means: Loss of battery voltage.
Diagnostic code 44 means: Battery temperature sensor voltage out of range.
Code 55 is end of message. That means the computer is finished showing codes.
Trouble code P0499 means: Evaporative Emission System Vent Control Circuit High
code 54 means there is no signal from the pickup coil aka ( cam sensor ) to the pcm.
The plug-in for a code reader on a 1990 Dodge Dakota is located under the hood along the firewall.
Trouble code P1495 means: Leak detection pump solenoid circuit
According to Haynes Repair Manual for 1987 to 1996 Dakota, for 2.5L engines, code 27 means: Fuel injector control circuit. For 3.9L and 5.2L engines, code 27 means: Injector output circuit not responding.
Trouble code P1494 means: Leak detection pump pressure switch or mechanical fault