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2002 dodge dakota quad cab error codes P0442 & P0446

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They are common Generic Codes you can find anywhere on the internet

PO442-Evap System (Small Leak)

PO 446- Evap System Vent Control Circuit Malfunction

Posted on Oct 27, 2012

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6ya6ya
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Posted on Jan 02, 2017

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Mr BrokRench
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SOURCE: Error codes P0442 and P0455 in Dodge Dakota 2001

Hello shoretex...Yes sir you can repair this yourself...
p0442 is medium leak detected ...p0456 is small leak....and p0440 is a general evap system failure.. evap codes are a common thing. gas caps are an inexpensive place to start. There are two types of evap hoses on the Dodge... hard plastic and soft rubber.... before you replace parts check the soft rubber first at the evap cans and pump located about a foot in front of the gas tank fill pipe on trucks located next to the transfer case or right behind the trans on the driver side. hard plastic lines will brake or rub through...check spots where lines come in contact with anything. this is a common thing with older trucks...hair line cracks will kick a p0442 code, and a p0445 code...When you find a leak, repair it, and rescan...sometimes there are several leaks, continue with inspection and repairs until you get it all fixed up.... Remember..start at simple and work from there...
i will post the evap. system in more detail to help you troubleshoot the problem.
EVAP System: The Evaporative Emission (EVAP) Control system used on all vehicles is the charcoal canister storage method. This method transfers fuel vapor from the fuel tank to an activated carbon (charcoal) storage device (canister) to hold the vapors when the vehicle is not operating. When the engine is operating, the fuel vapor is purged from the carbon element by intake air flow and consumed in the normal combustion process. The evaporative system includes the following components: *Fuel tank *Evaporative emission canister vent solenoid *Fuel tank pressure sensor *Fuel pipes and hoses *Vapor lines *Fuel cap *Evaporative emission canister *Purge lines *Purge valve solenoid EVAP System Operation: The EVAP purge solenoid valve allows manifold vacuum to purge the canister. The Powertrain Control Module (PCM) supplies a ground to energize the EVAP purge solenoid valve (purge on). The EVAP purge solenoid control is Pulse Width Modulated (PWM) or turned on and off several times a second. The EVAP canister purge PWM duty cycle varies according to the operating conditions determined by the mass air flow, the fuel trim, the engine coolant temperature, and the intake air temperature. For certain EVAP tests, the diagnostic will be disabled if the TP angle increases to above 75% . The evaporative leak detection diagnostic strategy is based on applying vacuum to the EVAP system and monitoring for vacuum decay. The fuel level sensor input to the PCM is used to determine if the fuel level in the tank is correct to run the EVAP diagnostic tests. To ensure sufficient volume in the tank to begin the various diagnostic tests, the fuel level must be between 15% and 85% . The PCM monitors the fuel tank pressure/vacuum level via the fuel tank pressure sensor input. Results of Incorrect Operation: Poor idle, stalling and poor driveability can be caused by the following: *Malfunctioning purge solenoid. *Damaged canister. *Hoses/lines split, cracked and/or not connected properly. Evidence of fuel loss or fuel vapor odor can be caused by the following: *Liquid fuel leaking from the fuel lines *Cracked or damaged canister *Inoperative canister control valve Vacuum hoses that are: *Disconnected *Mis-routed *Kinked *Deteriorated *Damaged The evaporative leak detection diagnostic strategy is based on applying vacuum to the EVAP system and monitoring vacuum decay. The PCM monitors vacuum level via the fuel tank pressure sensor input. At an appropriate time, the EVAP purge solenoid and the EVAP vent solenoid are turned on, allowing engine vacuum to draw a small vacuum on the entire evaporative emission system. After the desired vacuum level has been achieved, the EVAP purge solenoid is turned off, sealing the system. A leak is detected by monitoring for a decrease in vacuum level over a given time period, all other variables remaining constant. A small leak in the system causes DTC P0442 to be set. If the desired vacuum level cannot be achieved in the test described above, a large leak or a faulty EVAP purge solenoid is indicated. This can be caused by the following conditions: *Disconnected or faulty fuel tank pressure sensor. *Missing or faulty fuel cap. *Disconnected, damaged, pinched, or blocked EVAP purge line. *Disconnected or damaged EVAP vent hose. *Disconnected, damaged, pinched, or blocked fuel tank vapor line. *Disconnected or faulty EVAP canister solenoid. *Disconnected or faulty EVAP vent solenoid. *Open ignition feed circuit to the EVAP vent or purge solenoid. *Damaged EVAP canister. Any of the above conditions sets DTC P0440. A restricted or blocked EVAP canister vent path is detected by drawing vacuum into the EVAP system. The PCM turns off the EVAP vent solenoid and the EVAP purge solenoid (EVAP vent solenoid Open, EVAP purge PWM 0% ). The PCM monitors the fuel tank pressure sensor input. With the EVAP vent solenoid open, any vacuum in the system should decrease quickly unless the vent is blocked. A blockage is caused by the following conditions: *Faulty EVAP vent solenoid (stuck closed). *Plugged, kinked, or pinched vent hose. *Shorted EVAP vent solenoid driver circuit. *Plugged evaporative canister.

Good luck shoretex, hope this helps...please take time to rate me a fixya.

Posted on Jul 20, 2009

motor1258
  • 6674 Answers

SOURCE: error codes p0442 & P0455

Those are both Evaporative Emission Control System related.
442 is a small leak has been detected.
455 is a bigger leak has been detected.
Check all your connections, (electrical & vacuum lines) as well as check for any cracked, loose vacuum hoses in the system, as well as clean "O" ring on your gas cap well and threads in filler pipe & make sure gas cap is tight. Do the gas cap first & see if codes dissappear, but it may take a new gas cap. These codes commonly appear shortly after getting gas, due to cap not back on tight.

Posted on Oct 03, 2009

csmock132
  • 4669 Answers

SOURCE: 2003 dodge dakota 4.7 auto.quad cab stalls for no

Check Engine Light? Any codes? Possible cam or crank sensor.

Posted on Mar 02, 2009

  • 439 Answers

SOURCE: my check engine light came on 2003 dodge dakota

This code is normally caused by a loose gas cap or a bad EGR valve. It is the code for the evap system on your truck. You can go to autozone and they will clear the code for you if you can not do it yourself. You may need to replace the gas cap and or the EGR valve if the code comes back up, these are normally one time things due to the cap not being fully tightened.

Posted on Nov 04, 2009

  • 30 Answers

SOURCE: the DODGE Dakota quad cab 2007 have a cabin filter

It does not have a cabin air filter.. No worries about changing one.

Posted on Apr 21, 2010

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I have a 2003 dodge dakota quad cab 4.7l v-8 4x4 with p0440pd and p0442pd for engine codes that are on can't find out what they are.


P0440-GENERAL EVAP SYSTEM FAILURE, Check your vacuum hoes by the cannister close to your fuel tank.
P0442: Evap leak monitor, Small Leak Detected, check/change your gas cap should fix that problem!
I hope this helps!

Mar 05, 2011 | 2003 Dodge Dakota Club Cab

1 Answer

P0442 Evap system small leak--What does that mean and how do I fix it


P0442 Means you have a leak in your EVAP system.
The EVAP system prevents gas vapors from entering the air .
This code can be set by a leak in the lines or a clogged charcoal canister.
Most common reason is If you did not put your gas cap on all the way.
Hope this helps
Leave feedback please
thank you FixYa

Sep 20, 2010 | 2000 Dodge Dakota Quad Cab

1 Answer

Code is p0442


Try this website for resolving car problems by downloading a FREE service manual for your vehicle. This is not an owners manual but a factory mechcanic's manual.

http://ezinearticles.com/?Find-the-Free-Auto-Repair-Manual-You-Need-Online&id=92717

May 01, 2010 | 2000 Dodge Dakota Quad Cab

1 Answer

2002 dodge dakota with a check engine light code 442


P0442:

Small leak detected in evaporative purge system

if i had to guess I would say that your gas cap is not on tight enough or that is is bad. chrysler has had a lot of bad gas caps that cause EVAP service engine lights.

Feb 12, 2010 | 2000 Dodge Dakota Quad Cab

1 Answer

Kills unless i have it in neutral until warm then fine


http://www.obd-codes.com/p0442
click here for p0442 info

as for the stalling issue i can't think of anything that would cause that, possibly a vacuum leak?

Jan 04, 2010 | 2002 Dodge Dakota Club Cab

3 Answers

I am blowing error codes P0442 and P0456, can i fix it myself


P0442 Evaporative Emission Control System Small Leak Detected
P0446 Evaporative Emission Control System Vent Control Circuit Malfunction

You should replace the VAPOR CANISTER PURGE REGULATOR.

Oct 03, 2009 | 2002 Dodge Dakota Club Cab

1 Answer

Error codes 0442 and 0445


Hi..my name is Keith..and the error code P0442 means...Evaporative emission control system,small leak detected ...and error code P0445 means....Evaporative emission control system,short in purge control valve circuit..i hope this has helped

Jul 04, 2009 | 2002 Dodge Dakota Club Cab

1 Answer

P0442 odb2 code


P0442 Evaporative Emission Control System Leak Detected (small leak) this could be a defective leaking purge valve or a pressure sensor switch.

Apr 11, 2009 | 2002 Dodge Dakota Club Cab

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