Question about 2003 Oldsmobile Alero

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Diagnostic code p0442

I have an2004 Oldsmobile Alero. It didn't pass emissions yesterday. the code that came up is p0042 what can I check?

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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

Posted on Jan 03, 2009

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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
China OBD2 car diagnostic tools wholesale on CareUCar

Jun 05, 2014 | 2004 Chevrolet Avalanche

1 Answer

CAR WONT GO IN READY STATUS


broken evap line/port on fuel pump. Or leaking fuel pump o-ring
check the EVAP canister it is right next to fuel filter could be pcm needs update to fix false codes. Here is a old hillbilly trick that may help put saliva on the seal of gas cap when you fill up every time that may work for you.

Mar 26, 2014 | 2002 Oldsmobile Alero

2 Answers

WHAT DOES P0442 MEAN 02 ALERO


That means evaporitive emissions control system leak that is small. Most of the time this points to a bad gas cap or loose gas cap but not always. IT could be from a valve or bad hose.

Aug 19, 2013 | 1999 Oldsmobile Alero

1 Answer

Started having issues last 2 week where the fuel gauge would just die and then come back on. Yesterday, the check engine light came on and I testerd the computer mod which gave out code of P0442.


P0442 = Evaporative Emission System-Leak detected (small leak)
Go to www.hmaservice.com and register your vehicle by VIN #.. you'll then have access to wiring diagrams, shop manuals, service bulletins, campaigns, illustrations and procedures, etc.
When a 'check engine light' (MIL=Malfunction Indicator Lamp) is turned on, there is a DTC (Diagnostic Trouble Code) set/stored in the ECM/PCM (Engine Control Module/Powertrain Control Module). This code identifies which engine management system component/function experienced a malfunction.
SINCE I don't know which model/year (M/Y) Hyundai vehicle you have, it's difficult to help.

Sep 08, 2011 | Hyundai Santa Fe Cars & Trucks

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I have 3 codes, p1189 ,p0128 and po442 . looking for what thay mean. 2002 alero.


p1189 is-- manufacturer control fuel air metering----- p0128 is-- coolant temp below thermostat regulating temp,--- p0442 is-- evap emission control system leak ( small ). have a good day !!

Jan 07, 2011 | Oldsmobile Alero Cars & Trucks

1 Answer

2001 Alero code p0440.


there is still a small leak, the shop thats doing the testing can repair it? right? Usually these things are just one item, you may have more than one.

Sep 28, 2009 | 2001 Oldsmobile Alero

1 Answer

Failed inspection due to codes P0336 and P0442


PO336 IS THE CRANKSHAFT POSITION SENSOR WHICH SHOULD BE THE ANSWER TO PASSING INSPECTION SINCE IT IS A PERFORMANCE ISSUE. IT IS RESPONSIBLE FOR FUEL INJECTION AND SPARK PULSE. REPLACING IT SHOULD HELP TO REDUCE EMISSIONS. AND THE SECOND CODE IS AN EVAP LEAK,SMALL. HOPE THIS HELPS. LET ME KNOW. BEST OF LUCK

Apr 29, 2009 | 1996 Oldsmobile Ninety Eight

1 Answer

Security System on 2002 Oldsmobile Alero


the most common cause of this is the key, to check this use another working key, if the problem persists the ignition lock cylinder sensor is defective and the lock cylinder must be replaced, the dealer will need to do this as the security system must be re-programed to accept the new key code.

Feb 09, 2009 | 2004 Oldsmobile Alero

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