Question about 2004 Jeep Grand Cherokee

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2004grand cherokee evap leak

I think it was p0442

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Posted on Oct 31, 2008

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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

2 Answers

How to repair engine code po442 2009 mazda 5?


Check the purge solenoid under the hood common problem in mazda 5 6 cx7.

Jul 11, 2014 | Mazda Cars & Trucks

3 Answers

What does code p0442 mean


P0442: Evaporative Emission (EVAP) System Small Leak Detected
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
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Jun 05, 2014 | 2004 Chevrolet Avalanche

1 Answer

04 grand cherokee, have replace all 4 oxigen sensors, replace gas cap and now is showing a 0442 code.


code p0442 refers to evaporative emission (EVAP) system--small leak detected.===causes---hose connections --intake leak---EVAP canister--EVAP purge valve
It also refers to large leak detected (fuel cap loose /off)===causes --mechanical fault---hose connections--EVAP pressure sensor.
No--- you do not need to drive it more Just need to fix the faulty unit.

Feb 21, 2014 | Cars & Trucks

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

2 Answers

Hard to put in fuel


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

The solution could be as simple as replacing your gas cap. However, there may be a hole in your hose, also. For details, check out: http://www.obd-codes.com/p0442

Aug 10, 2012 | Hyundai Santa Fe Cars & Trucks

2 Answers

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

1 Answer

Code, p0442 p0445


P0442 - Evaporative Emission Control System Leak Detected (small leak)

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.

Symptoms: You likely won't notice any drivability problems.

Causes: A 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

Possible Solutions: 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



P0445 - Evaporative Emission Control System Purge Control Valve Circuit Shorted.
Possible Solutions: with a P0445, the most common repair is to:
* Bad or loss contact wires
* Check harnesses, replace it


Hope helps (remember to rate this).

Nov 05, 2010 | 1999 Jeep Cherokee

2 Answers

My 2001 Jeep has evap leak codes p0455 and p0442, it has been smoke tested and there were no leaks found, but the codes are still there any ideas


I do not know the codes but after a smoke test ,I would use the codes and a schematic to walk down and test every switch or valve in the EVAP System. A professional scanner would be nice,so you could command somethings on and off.

Mar 12, 2010 | 2001 Jeep Grand Cherokee

1 Answer

2003 Jeep Liberty


p0455 is evap control system no purge or large leak
p0442 is evap control system leak detected (small leak)

the cause for both could actually be a loose gas cap.

Dec 18, 2009 | 2002 Jeep Grand Cherokee

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