Question about 2001 Dodge Dakota

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I have an evap leak wher do I start to look - 2001 Dodge Dakota

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Look at the hoses behind the battery box inspect for cracks.also on the evap canister by the gas tank theres a 1/2 inch hose that will crack. cheap hoses are the culpret in most cases.i used splices and new chunks of hose.also a vacumme hose tester comes in handy to locate leaks.

Posted on Jul 30, 2009

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If your particular vehicle has a certain emissions package, the first place I would look is at the Leak Detection Pump (LDP). It should be located in the engine compartment, under the battery tray and Pwr Distribution Ctr. The LDP and filter are replaced/serviced as one unit. The LDP is a device used to detect a leak in the evaporative system. The pump contains a 3-port solenoid, a pump that contains a switch, a spring loaded canister vent valve seal, 2 check valves and a spring/diaphragm.
Hope this helped.

Posted on Jul 19, 2009

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Sure that the evaporator is

Posted on Aug 01, 2009

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I have DTC Codes; P0441, P0442, and P0446 EVAP codes. Have had too many things replaced to name and still have codes. Originally, only had one code P0442, after the unsuccessful removal of severalevap


code p 0442 refers to evaporative emission(EVAP) system---small leak detected====causes--hose connections--intake leak--EVAP canister--EVAP canister purge valve
it also refers to --large leak detected====causes fuel cap loose, off---mechanical fault--hose connections---EVAP pressure sensor
code p 0441 refers to EVAP system--incorrect flow detected====causes hoses, intake leak-- EVAP canister purge valve
code p 0446 refers to EVAP system, vent control---circuit malfunction===causes--wiring---EVAP canister purge valve----ECM
if you can remember when the problem started ( after refueling) it may be that the cap is not fitted correctly
it could that in the fixing process , the wiring has not been correctly installed or the problem is the canister purge valve needs attention

Feb 06, 2017 | Cars & Trucks

2 Answers

Error codes p0442 and po445


Po442 is evap system leak
check intake and all vacuum hoses for leaks
check evap canister and purge valve
Po445 is evap canister purge valve short circuit
check wiring and connection

Apr 16, 2016 | 2002 Jeep Grand Cherokee Limited

1 Answer

Why is gas leaking out my Evap fresh air hose every time i try to put gas in my car and start it


I suspect you are OVERFILLING your tank...

There should be a direct connection from your canister to the top of the fill tube. It is intended to safely draw out gas fumes.

even if you don't OVERFILL... gasoline can expand (coming from the cold ground... into a nice warm car) enough to repeat the symptoms you have depicted.

Try putting in less gas...

Things will most probably resolve themselves... otherwise you might need a new canister.

Be safe... DO NOT OVERFILL.

Jan 03, 2016 | 1999 Pontiac Grand Am GT

2 Answers

I would like to know what the code PO455 on a 2007 Mitsubishi Endeavor means.


Possible causes
- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking
help.jpg What does this mean? Tech notes
The P0455 it's a very common code, because the code is set if the gas cap is loose or missing. Start by tighten the gas cap and clearing the code. In most cases the code can be clear by disconnecting the car battery for about 30 minutes.
help.jpg What does this mean? When is the code detected?
Evaporative Emission System (EVAP) control system has a very large leak such as fuel filler cap fell off, EVAP control system does not operate properly.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors
P0455 Mitsubishi Description
This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. If pressure does not increase, the Engine Control Module (ECM) will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition.
The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed.

Read more: http://engine-codes.com/p0455_mitsubishi.html#ixzz3NlVyARyX

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Dec 30, 2014 | Cars & Trucks

1 Answer

What is a P2404 code mean from a suzuki sx4


Trouble Code: P2404 (2.0L L4 VIN 5 Automatic CVT)
Evaporative Emission System Leak Detection Pump Sense Circuit Range / Performance
Number of Trips to Set Code: 1
Trouble Code Conditions:
EVAP vent valve stuck open: EVAP leak check pressure is lower than -0.14 kPa even if EVAP vent valve is operated from OFF (OPEN) to ON (CLOSE) with EVAP leak detection pump ON. EVAP vent valve stuck closed: EVAP leak check pressure is unstable (difference between maximum and minimum is 0.36 kPa or more) when EVAP vent valve is OFF (OPEN) with EVAP leak detection pump ON. EVAP leak detection pump stuck OFF: EVAP leak check pressure is higher than -0.14 kPa even if EVAP leak detection pump is ON. EVAP leak detection pump flow high: Reference pressure of EVAP leak check pressure is lower than specified value (depending on BARO) EVAP leak detection pump flow Low: Reference pressure of EVAP leak check pressure is higher than specified value (depending on BARO).
Possible Causes:
  • EVAP leak detection pump (in EVAP leak check module) and/or its circuit
  • EVAP vent valve (in EVAP leak check module) and/or its circuit
  • EVAP leak check module and/or its circuit
  • ECM

Jul 11, 2014 | 2010 Suzuki SX4

1 Answer

Trouble starting error code is p0451


P0451 - Evaporative Emission Control System Sensor

This sensor is used to test that there are no leaks in the EVAP system. This is usually a result of a failed sensor, but considering your starting trouble, you most likely have a leak in your EVAP system which is allowing extra air into your intake.

Attach a vacuum gauge to intake manifold vacuum and start the engine. You should see 19-21 inches of vacuum at idle. If it's significantly lower than this, try unhooking the evap line from the intake and covering the intake port with a vacuum cap. If the vacuum comes up, then you have a leak a leak in the EVAP system you will need to find and fix.

Hope this was helpful.

Oct 23, 2011 | 2007 Pontiac G6 GT Convertible

1 Answer

I have a doge gran carvan 2000 or 2001 3.3v6 i have cods coming up as falows p1775 p0732 p1788 p0700 p0456 can eny buty tell me wher to start got it today at an auction dont know much


CODE P1775 - A / T OR AUTOMATIC TRANSMISSION SWITCH LATCHED IN TCC POSITION. CODE PO732 - A / T ADDITIONAL GEAR RATIO ERROR IN SECOND GEAR. CODE PO700 - AUTOMATIC TRANSMISSION CONTROL SYSTEM MALFUNCTION CODE PO456 - EVAP SYSTEM SMALL LEAK DETECTED.POSSIBLE CAUSE FUEL TANK CAP LOOSE OR DAMAGED , SMALL LEAK PRESENT SOMEWHERE IN EVAP SYSTEM. I DID NOT SEE CODE P1788. BUT CODES P1775, P0732 , PO700 , YOU HAVE INTERNAL TRANSMISSION PROBLEMS TRANSMISSION SHOP HAS TO HOOK DIAGNOSTIC EQUIPMENT TO CHECK TRANSMISSION PRESSURE SOLENOIDS AND SHIFT SOLENOIDS. TRANSMISSION VALVE BODY HAS MANY SOLENOIDS PRESSURE SWITCH AND SENSORS COST TOO MUCH REPLACE THEM ALL LET GARAGE SCANNED TRANSMISSION BE MUCH CHEAPER.

Nov 07, 2010 | Dodge Caravan Cars & Trucks

3 Answers

I have 2000 chevy impala 3.4 engine i have check engine light with this code p0442 took it it to auto zone they said it was a small leak dont know where to start


This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
code P0442 most likely means one or more of the following has happened:
  • A loose or improperly affixed gas cap
  • A non-conforming gas cap (i.e. not factory/original brand)
  • A small leak/hole in a fuel vapor hose/tube
  • Other small leak in EVAP system
  • Faulty vent o-ring seal
With a P0442, the most common repair is to:
  • Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
  • Otherwise, replace the gas cap, or
  • Inspect the EVAP system for cuts/holes in tubes/hoses

Dec 31, 2009 | Chevrolet Impala Cars & Trucks

2 Answers

I have a 2003 dodge ram 1500 with a V-8 4.7 engine and my check engine light came on with a P0456 code and I have been told that it could be the gas cap, I have checked it and it seems fine but should I...


The leak in your evap system is very small at .020. It is more than likely a small split in a hose somewhere. The cap is probably ok, we rarely find a bad one. If it is a small split in a hose it will only get larger over time. Here is the factory info on the code. We have found that alot of these leaks are from a small hose on the evap canister under the vehicle, but with out looking at your vehicle it is hard to say. If the leak goes away or is no longer large enough to be detected, your light will go out after a few days. These leaks are emmissions related and will not effect the integrity of the vehicle. I would have it checked and corrected if the light stays on at your convienience.

Symptom List:
P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED
P0455-EVAP LEAK MONITOR LARGE LEAK DETECTED
P0456-EVAP LEAK MONITOR SMALL (.020) LEAK DETECTED
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0442-EVAP LEAK MONITOR
MEDIUM (0.040) LEAK DETECTED.
When Monitored and Set Condition:
P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED
When Monitored: Immediately after a cold start, with battery/ambient temperature
between 40° F and 90° F and coolant temperature within 10° F of battery/ambient.
Set Condition: If there is a leak larger than 0.0409 and smaller than 0.0809 in the
evaporative system.
P0455-EVAP LEAK MONITOR LARGE LEAK DETECTED
When Monitored: Immediately after a cold start, with battery/ambient temperature
between 40° F and 90° F and coolant temperature within 10° F of battery/ambient.
Set Condition: There is a leak larger than 0.0809 in the evaporative system.
P0456-EVAP LEAK MONITOR SMALL (.020) LEAK DETECTED
When Monitored: Immediately after a cold start, with battery/ambient temperature
between 40° F and 90° F and coolant temperature within 10° F of battery/ambient.
Set Condition: There is a leak larger than 0.0209 and smaller than 0.0409 in the
evaporative system.
POSSIBLE CAUSES
LEAK AT GAS CAP
VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
VISUAL AND PHYSICAL INSPECTION
VERIFY EVAPORATIVE EMISSION SYSTEM LEAK
EVAP PURGE SOLENOID OPERATION
INTERMITTENT LDP MONITOR FAILURE
EVAPORATIVE EMISSION LEAK DETECTION
GAS CAP
LDP COMPONENT LEAK

Jun 12, 2009 | 2003 Dodge Ram Maxi

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