Question about 2001 Dodge Durango

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Evaporative emission system - small leak/no BB flow condition

My check engine light came on. I determined the code to be P0442. I need assistance locating the EVAP canister on my 2000 4.7 liter Dodge Durrango 4x4. Can you send me a diagram of the evaporative emission system with a general description of the location of the EVAP canister? Thanks for your help.

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  • Anonymous Mar 17, 2014

    p0442 code don't know where evap located

  • Anonymous Mar 21, 2014

    CarMD.com reports code po455 evap emissions clog to canister

  • Anonymous Mar 22, 2014

    Evap codes

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  • Dodge Master
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Although I recommend you buy a Haynes service manual for your Dodge, I think you will find the canister attached to the firewall or one of the fender wells. Most of them look a lot like an overgrown spam can and it will have two connections on it.

Posted on Mar 06, 2009

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I have a 2006 GMC 1/2 ton pickup with 5.3 V8. Engine light came on and upon checking, it has a P0442 and P0442 P code. Any suggestions on this? Also how do I erase the engine light.


You erase the engine light by fixing the problem . With every DTC - diagnostic trouble code there are diagnostic flow chart's , steps to find the problem .

DTC P0442 : Evaporative Emission (EVAP) System Small Leak Detected

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Hyaunda 2010 check engine light code P0442


code p0442 has 2 possible fault areas

evaporative emission (EVAP) system --small leak detected===causes --hose connection/s--intake leak--EVAP canister--EVAP canister purge valve
and the second possible

evaporative emission system--large leak detected (fuel cap loose/off)===causes--mechanical fault---hose connection/s---EVAP pressure sensor

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Have OBD codes P2A00, P0441, P0442, P0446 on my 2003 Highlander. Selling the car in a few months. Does this really need to be repaired before trade-in? Can I just erase the codes?


NOPE CANT ERASE CODES UNTIL THE PROBLEM IS FIXED OR THE SERVICE ENGINE LIGHT SOON WILL STAY ON. CODE PO441 - EVAPORATIVE EMISSION EVAP SYSTEM INCORRECT FLOW DETECTED.CHECK INTAKE VACUUM HOSE CONNECTIONS AT THE EVAP CANISTER PURGE VALVE.IF ALL IS GOOD.THE EVAP CANISTER PURGE VALVE COULD BE BAD. CODE PO 442 - EVAPORATIVE EMISSION EVAP SYSTEM SMALL LEAK DETECTED. EVAPORATIVE EMISSION SYSTEM LARGE LEAK DETECTED FUEL CAP LOOSE OR OFF MISSING. CODE PO 446 - EVAPORATIVE EMISSION EVAP SYSTEM VENT CONTROL CIRCUIT MALFUNCTION.

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That is a problem in the evaporative emission control system.
Could be anything causing it
Clogged filter in the charcoal canister
A leak in one of the vacuum lines
The purge valve not working,,,etc.
The best thing is to take it and have it checked out, they might have to do a smoke test to find the problem.
All they do is inject smoke into the system, if there is a leak the smoke will come out of it. All it takes is a pin hole in these emission systems to screw it all up.

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I checked the codes and one comes up its po446. i dont under stand what it mean so i cant fix it to get the light to go out.


P0446 Evaporative Emission System Vent Control Circuit.
The following are descriptions of all Evaporative possible codes:

P0441 Evaporative Emission System Incorrect Purge Flow
P0442 Evaporative Emission System Leak Detected (small leak)
P0443 Evaporative Emission System Purge Control Valve Circuit
P0444 Evaporative Emission System Purge Control Valve Circuit Open
P0445 Evaporative Emission System Purge Control Valve Circuit Shorted
P0446 Evaporative Emission System Vent Control Circuit
P0447 Evaporative Emission System Vent Control Circuit Open
P0448 Evaporative Emission System Vent Control Circuit Shorted
P0449 Evaporative Emission System Vent Valve/Solenoid Circuit
P0450 Evaporative Emission System Pressure Sensor/Switch
P0451 Evaporative Emission System Pressure Sensor/Switch Range/Performance
P0452 Evaporative Emission System Pressure Sensor/Switch Low
P0453 Evaporative Emission System Pressure Sensor/Switch High
P0454 Evaporative Emission System Pressure Sensor/Switch Intermittent
P0455 Evaporative Emission System Leak Detected (large leak)
P0456 Evaporative Emission System Leak Detected (very small leak)
P0457 Evaporative Emission System Leak Detected (fuel cap loose/off)
P0458 Evaporative Emission System Purge Control Valve Circuit Low
P0459 Evaporative Emission System Purge Control Valve Circuit High
---
At least the cap isn't loose for the gas tank.

I would clear the code with an OBD-II Scanner 'erase code' button, and see how long it takes for it to come back.

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My check engine light on my 2001 hyundai accent gl reads code po441, po442. What does these codes mean?


Most of the time they mean:
p0441 = Evaporative Emission System Incorrect Purge Flow
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MOre info at http://www.obd-codes.com/p0442

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1 Answer

Having the same problem the other guy described.


First of all, these codes are what are called "Powertrain Trouble Codes' (that's what the "P" means P=Powertrain). TCM Request (Transmission Control Module = TCM). The request was to turn on the 'Check Engine" light.
P0720 - output speed sensor circuit malfunction
P0715 - Input speed sensor (turbin speed) circuit malfunction
P0442 - Evaporative Emission System Leak (Small Leak)
P0455 - Evaporative Emission System Leak (Large Leak)
Check fuel filler cap problems - for Evap Emiss leaks
Replace the pulse generators & have the trans fluid replaced/flushed.
The Main Catalyst System Efficiency Bank 1 Is P0420, not P0442
If you had P0420 code, the catalytic converter is shot... and that's an expensive component.

Oct 06, 2009 | 2001 Hyundai Elantra

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I have a 2002 Ford Taurus, and an engine sign showed up. However, I pulled out the code which is P0442. what is the problem, how much would that cost me and when do I need to fix it, can I wait for the...


P0442 code relating to the EVAP (Evaporative Emission System).a small emissions leak. also check the gas cap .Try cleaning the seals first and then try putting a little vaseline on the seals before getting a new gas cap. -------------
Code P0442-Evaporative emission control system. Canister Purge system failed the monitor test indicating a large leak (over 0.040”). Enabling conditions: Engine running after a 6 to 8 hour engine off period called a cold soak. The test runs when engine load is between 15 to 45% and inlet air temperature between 40 and 130°F. Blocking Action: This code can block the following monitors: Fuel Control, O2 monitor, Catalyst Monitor, misfire monitor. Testing: Check the purge hoses for leaks, leaking vapor management valve or loose gas cap.

This simply indicates that there was no flow from the evap system when the purge valve was energized. This could be cause of a few different reasons. First, check for leaks by visually looking at all evap lines for cranks rips or any tears. Basically, anywhere that fuel vapors can escape.
----------- Here is the test that will smoke the system for leaks with a smoke machine.

Evaporative Emission System Leak Test

SPECIAL TOOL(S)

CAUTION: The evaporative emission system must not be pressurized to more than 3.48 kPa (14 inches H2O)or damage to the evaporative emission system may occur.
  1. Connect the Evaporative Emission System Leak Tester to the evaporative emission test port.
  2. Close the canister vent solenoid.
  3. Pressurize the evaporative emission system to 3.48 kPa (14 inches H2O) .
  4. Monitor the system for two minutes . The system fails the leak test if the pressure falls below 2.0 kPa (8 inches H2O) .
  5. Repair any leaks as necessary.
  6. Repeat the leak test until the system remains above 2.0 kPa (8 inches H2O) after the two-minute test period.
---------- get it repaired ASAP because if you drive the car in same condition the emisson system can get damaged.and code will be p0445 ,now the code is p0442 its for leak in the emisson system. ---------------- This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya.

Oct 15, 2009 | 2002 Ford Taurus

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