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I have a 2003 Dodge Ram. The emissions light came on and I am wondering what the code P0442 stands for?

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P0442- Evap Emission Ctrl Sys Leak Detected (smallleak)
You have a small leak in the emission sys. You can do a smoke test on the vacuum sys and see where the smoke is pulled in and that is the leak,

Posted on May 19, 2017

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ENGINE LIGHT ON AND CODES P1684 AND P0442 DISPLAYED WHEN TURNING KEY OFF AND ON 3 TIMES ON 2001 GRAND CARAVAN. WHAT IS PROBLEM?


P0442 is evap emission canister ,and or gas cap,P1684 is the your battery has been disconnected in the last 50 starts

Mar 17, 2017 | 2001 Dodge Grand Caravan

1 Answer

I have OBDII Code P0442 On dodge Stratus SXT 2005


The P0442 means Evapotative Emission Control System Leak Detected (small leak), I think you have known where is the problem.

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Aug 16, 2012 | 2005 Dodge Stratus Sedan

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P0455 and p0442


p0455-- emission control system ( a large leak ) the most common cause is a bad seal on fuel cap, remove and replace cap, if light stats on. replace cap. if not the cap it could be any where in emission system. p0442 is--same as above. Code p0442 indicates a fuel vapor leak in the EVAP control system. To fix this problem, remove and reinstall the gas cap. Clear the codes and drive to see if the codes reappear. If the code appears again replace the gas cap or inspect the system for cuts or holes in the tube or hose. good-day !

Aug 24, 2011 | 2002 Jeep Grand Cherokee

2 Answers

The check engine light is on withcode p0442 on my 2003 dodge dakoda. what does this mean


this code# po442 is avery small leak in the evaporative emission control system. First check that the gas cap is on tight, past the clicking sound. this uaually solves the problem. if you need more help get back to me and we'll go from there. Please rate my fix as i strive to be the best Thanks Ray

Aug 08, 2010 | 2003 Dodge Dakota Club Cab

2 Answers

Lights keep on coming


They mean you have an Emission Control leak. it could be something as simple as a missing gas cap or a leak at the muffler, Catalytic Converter or pipes.

Google Emissions Control System for your vehichle to get more or less an idea where to look at a diagram of the Emissions Control System. All the codes mean the Computer has detected a leak.

Dec 30, 2009 | 2002 Dodge Durango

2 Answers

I have a 2003 Mitsubishi Eclipse with a P0442 code small evap emission control system leak What are some of causes,and how would I trouble shoot


Defective or loose fuel cap, EVAP canister or hose cracked or not connect, purge or vent solenoid defective, or a vacuum leak at engine.

Sep 05, 2009 | 2003 Mitsubishi Eclipse Spyder

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

3 Answers

2003 Chevy Silverado 1500 Error Codes


P0135 is a bad 02 sensor
P0442 is a evap problem
P0449 is a vent solenoid

i would check the vent solenoid first its a 4ws fuse under the hood in the fuse box make sure you have power to it you should have power at all times the ground comes from the pcm i think if you fix this everything else will work they are all computer controled

Mar 23, 2009 | 2003 Chevrolet Silverado 1500

1 Answer

Code P0456,P0455, &P0442


hello po442 ,po455,po456 is leak detected possible, check the gas cap , basicaly you have a leak that is larger than 0.020' and smaller than 0.040' in the gas evaporative system use your nose to find this one thanks

Feb 14, 2009 | 2003 Dodge Durango

1 Answer

Diagnostic code p0442


Hi, a P0442 is Evaporative Emission Control System Leak Detected (small leak). Start with the simplest thing first, make sure the gas cap is on tight. If it is, replace it with a new GM part (not a cheap aftermarket one). If that doesn't fix it, there are more steps listed here:
http://www.obd-codes.com/p0442

Jan 03, 2009 | 2003 Oldsmobile Alero

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