Emission rediness codes on after repair & clear

Question edited for clarity.
Question moved to model category.

Sensor issues or wiring to them.

Code P1391 Dodge CMP or CKP Signal Intermittent ...

AutoCodes https://www.autocodes.com > p1391_dodge
Engine Light ON (or Service Engine Soon Warning Light) · Lack/Loss of Power · The engine may be harder to start · The engine may stumble or stall.

Cam Sensor Failure Causing no Start or Stalling : Dodge ...

RepairPal.com https://repairpal.com > Problems > Dodge > Dakota
On 3.7L V6 and 4.7L V8 engines the camshaft position sensor may fail causing the engine to crank but not start or it can cause intermittent stalling.

Dodge Dakota Vehicles With This Problem

RepairPal.com https://repairpal.com > Problems > Dodge > Dakota
On the 3.9L V6 and 5.2L V8, an intermittent connection in the crank position sensor wire connector can cause poor engine performance or the engine may crank but ...

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scan vehicle for any codes --if resetting emissions do to dead battery or a repair then it can take multi times for "quick cycle " to reset all sensors the 2 last ones and which take longest is evap and cat

If the check engine light is on (from the misfire from the crossed wires), the computer is in "reduced power" mode. You need to clear the codes with a scan tool and try again.

Drive cycles are the amount of time vehicle has been driven since clear--battery disconnected--Drive vehicle for 1 hour under road conditions--then retest.

Check for OBD Codes

Diagnose those system codes,
& the system components &
make the repairs

The light will go out, when the Emission
Monitors run, or you can clear it if necc

Has the battery been disconnected, or has it gone dead? Every time the battery is disconnected, all trouble codes are cleared, the check engine light is turned off, and all system monitors are reset. For the monitors to get back to a 'ready' status, the vehicle needs to go through one or more (sometimes quite a few) drive cycles.
When you go to the emission station, they check for codes, AND also check to see how many of your monitors are in a 'ready' status. (This keeps people from disconnecting the battery, and thus clearing any trouble codes, in order to pass emission tests).
If you have not disconnected your battery for a while, but the monitors are still not showing 'ready', you need to have a qualified shop check out your computer and other electronic systems.

The Magnum V8 option for the Dodge Dakota in 2001 was a 5.9 L (360 cu in) with 250 hp which was also the largest engine offered in the 2nd generation Dodge Dakota (1997-2004).

P0780 Automatic Transaxle Malfunction (With Automatic ...


























P0780 Automatic Transaxle Malfunction - With Automatic Transmission





Possible Causes


Setting Conditions

• Mechanical problems present in the automatic transmission can cause this code to set. See the note below.



• Refer to the repair instructions in a transmission repair manual or the information in other electronic media to repair this code.

Engine running; vehicle driven at Cruise speed, and the PCM detected a problem in the mechanical operation of the automatic transmission. Note: This trouble code (P0780) sets with along with several TCM related trouble codes.he





Malfunction Indicator Lamp

The Malfunction Indicator Lamp (MIL) alerts the driver that the Powertrain Control Module (PCM) has detected an OBD II emission-related component or system fault. When this type of malfunction occurs, an OBD II Diagnostic Trouble Code (DTC) will be set by the PCM. The MIL is located on the instrument cluster and is labeled CHECK ENGINE, SERVICE ENGINE SOON, or is identified with an ISO standard engine symbol (i.e., a picture of an engine).

Bulb Test

Each time the ignition switch is turned to the "on" position, the MIL indicator is illuminated for about 3 seconds (which is a function of the PCM).

Readiness Codes

To check if the Readiness Codes are set to complete, turn the ignition switch "on", but do not start the engine. The MIL will come "on" for 15-20 seconds. If it then goes "off", the Readiness Codes are set to complete, If it flashes five times, one or more of the Readiness Codes are not set to complete. To set Readiness Codes from incomplete to complete, perform the drive cycle procedure for the appropriate code.

MIL Lamp-On Message

Each time the PCM detects an Emissions related fault, the MIL is illuminated to inform the driver that the vehicle needs to be taken in for service.




COMPONENT MONITOR DRIVE CYCLE INSTRUCTIONS

• Do not turn off the ignition switch during the test procedure.



• All Onboard Diagnostic Monitors are cleared when the battery is disconnected or when the Powertrain Control Module (PCM) is cleared with the Scan Tool.



• This drive cycle can be used to determine if the Readiness code for this Monitor will run and complete, and if the MIL will remain off after the vehicle is driven.



• Operating Ranges: When a range of values is provided, try to operate the vehicle in the middle of the range. For example, if the vehicle speed range calls for 45-55 mph, drive the vehicle as close as possible to 50 mph. If the engine speed should be 1,000-2,000 rpm, try to operate the engine at 1,500 rpm.



• Scan Tool Data: There are certain Parameter Identification (PID) values that must be within range before this Monitor will "run". It can be helpful to pull up those PID items on the Scan Tool so an assistant can view them during testing.



• The Readiness code for this Monitor defaults to "continuous" or "monitoring" because this Monitor runs continuously when the engine is cranking or running.

COMPONENT MONITOR PRETEST CONDITIONS

• MIL is off.



• No Emission related DTC's are present.

TEST PROCEDURE

1. Connect the Scan Tool to the data link connector (DLC). Use the Scan Tool to clear any stored DTC's and to reset the OBD Monitors.



2. Start the engine and allow it to run at idle speed for 15 seconds.



3. Accelerate at part-throttle to 40 mph and maintain that speed for several minutes. Bring the vehicle to a stop, and then allow the engine to idle with the transmission in Drive (in Neutral for M/T) for 15 seconds.



4. Then accelerate at moderate throttle to 50 mph and maintain that speed for 15 seconds. Bring the vehicle to a stop, and then accelerate to 40 mph and maintain that speed for 15 seconds. Bring the vehicle to a stop and allow the engine to idle for 15 seconds. Repeat this step at least 5 times.



5. Check for any Pending codes in the Generic OBD II section of the Scan Tool. If no Pending codes are set, the Component Monitor test is complete. If any Pending codes are set, refer to the appropriate trouble code repair information to make the repair.

The fuel pump is in the gas tank, Remove tank, And then remove the sending unit, The pump attatches to it

P0455 is a EVAP system leak detected code check to make sure your gas cap is tight or if you put gas in it while it was running and can set it . First tighten the gas cap then clear the code and drive and see if the code comes back.