Question about 2003 Toyota Camry

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How to fix diagnostic code p0442 - 2003 Toyota Camry

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P0442 OBD-II Trouble Code - Evaporative Emission Control System Leak Detected (small leak)

What does that mean?
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

Good luck (remember rated this help).

Posted on May 11, 2010

  • Sugarbear11 Nov 20, 2011

    How do you detect that size of a hole. With what kind of detection to let you know where it is. On a tire. I would put water to see some bubbles. But on this. What is use?

  • Patric O'Fish
    Patric O'Fish Jun 26, 2014

    SugarBear11 the soapy water and smoke tests are mentioned on ToyotaNation:http://www.toyotanation.com/forum/103-3r...

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Our P0442 kept coming up on a Toyota Sienna 2001. Performance was unaffected of course but Texas State Inspection would not pass it. Topping off the tank had caused damage (crack) in the carbon canister near the fuel tank. Not hard to reach and change (1 cover plate) The cost was nasty though ($200+) Advice? DON'T TOP OFF. I would reiterate trying all the cheaper things first of course - gas cap, valves, hoses. The testing algorithms in the ECM are quite involved to finally work out that you have fixed it too!

Posted on Dec 13, 2011

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They have canister in back buy tank there are hose and valve
on canister they replace both valves with canister but the say
442 is a small leak in systems ck for damage hose or broken valve
there plastic the end break sometime has anyone worked on car it
Is the overflow valve in the gas tank here it is on you tube

Overflow valve


lately in the rear maybe pulled on hose.alao don't. Overfill
tank kills the emmision valves can't dry them out

Posted on Jun 25, 2015

  • Jonathan Murray Jun 30, 2015

    Nice little job youtube show a great film

    it shows how to do it complete I need to learn how to send it

    im going to try

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On the camrys....its was a pattern failure for the vent solenoids and canister to go bad under the rear end of the car,charcoal comes out of rthe canister and get in the solenoid and holds it open just a little bit and produces a evap code. hope this helps

Posted on Dec 27, 2014

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My answer here may help
http://www.fixya.com/cars/t1056719-p0420_code_toyota_corolla

In summary: if you use a K&N air filter, you probably accidentally over-oiled one time in the past. The Mass airflow sensor is easy to remove (little oily) and quick to check with a flashlight. Look inside make sure the 2 resistors dont look like fuzzy tonsils. Clean with a gentle electronics cleaner. (dont touch them with anything like a ear swab, even if it's tempting). Change/clean the K&N air filter and then re-install the Mass Airflow Sensor. Clear the code and you should be good to go.

Just for grins also only use a factory certified gas cap. They're cheap and will save you many dollars in sensor troubleshooting.

Posted on Dec 09, 2014

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When Engine light came on 2009 Mercury Sable and got P0442 diagnostic code so how bad is diagnostic and how costly to fix?


code p0442 refers to evaporative emission system(EVAP)--small leak detected==causes-- hose connections,--intake leak--EVAP canister--EVAP canister purge valve
it also refers to large leak detected ( loose fuel cap/missing cap) causes--mechanical fault--hose connections---EVAP pressure sensor
If it has just started then check that the fuel cap is on tight or replace the pressure sensor or lastly ( it will probably the most expensive) the purge valve.

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Diagnostic code p0442


CODE PO442 EVAP SYSTEM SMALL LEAK DETECTED 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 Read more at: http://www.obd-codes.com/p0442 Copyright OBD-Codes.com

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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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P0442 is the code that I need to know what it means/2003 chevy blazer


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
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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My 2002 Dodge Grand Caravan Sport recently failed the NC emissions test.The codes it threw were p0442 and p0455.I replaced the gas cap and took it to Advance Auto and this is the codes I got back.Codes...


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Sorry dude but you don't have a prayer of a chance to fix this ! You know anything about automotive electronics , electrical systems ? Have a factory or professional scan tool . Going to advance auto won't cut it .

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P0442 code-2004 mitsubishi diamante


its an evap system small leak. most common cause is a loose gas cap. but could be any leak in the tank vent system

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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

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