Question about 2000 Pontiac Grand Am GT

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Check Engine Light

I have a 2000 Pontiac Grand Am V6 with a trouble code PO442 evaporate emissions small leak detected, any ideas?

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I just had this code actually on my car, 2000 G/A GT, found, of course, by the guy doing my state inspection while in the middle of the inspection... AUTO FAIL. I was told to replace the Oxygen sensor in position one (on the back of the block under the spark plug cables in the middle), did that and the light came back on in a week. Try replacing both the sensors first (there are two, the one mentioned and the other is by the CAT) because they are relatively inexpensive. Beyond that, make sure there are no muffler/pipe leaks and your filters are clean. If that doesn't help, try getting somebody with a higher quality scan tool to pinpoint the problem a bit better. Might be worth paying the $80 at an independent shop to solve it right off the bat. 

Posted on Apr 26, 2009

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I just had a scan done on my 2000 grand am 2.4 engine it had a code po442 where is this located on the car and I heard gas tank needs dropped to replace


I heard gas tank needs dropped to replace ???? You should never listen to what you heard from someone who has no clue ! P0442 is a small leak DTC P0442 Evaporative Emission (EVAP) System Small Leak Detected. You really should take it to a qualified repair shop .

EVAP Leaks P0442 and P0455

The evaporative emission system is tested by applying vacuum to the EVAP system and monitoring for a vacuum decay. The PCM monitors the vacuum level through the fuel tank pressure sensor signal. At an appropriate time, the EVAP canister purge solenoid valve and the EVAP vent solenoid are turned on, allowing the engine to draw a small vacuum on the entire evaporative emission system. Once the desired vacuum level has been achieved, the EVAP canister purge solenoid valve turns off, sealing the system. A small leak in the system will cause DTC P0442 to set.

Wells EVAP Training with Sgt Tech P0440 P0441 P0442 etc

Apr 24, 2017 | 2004 Pontiac Grand Am

2 Answers

Po442 code reader


no nothing to do with transmission ---its an evap code small leak detected this is the usual check gas cap that its on and tight or replace because seal is shot but the following link explains the other problems with assistance in helping repair problem
http://www.obd-codes.com/p0442

Jul 25, 2016 | 2000 Honda Passport

1 Answer

PO442


code p0442 refers to evaporative emission (EVAP) system--small leak detected====causes hose connection/s---intake leak--EVAP canister---EVAP canister purge valve
it also refers to evaporative emission system --large leak detected (fuel cap loose/ off)===causes---mechanical fault--hose connection/s--EVAP pressure sensor.

Jun 14, 2014 | 2003 Toyota ECHO

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

1 Answer

Engine coad po442 how do i fix it


PO442 is the data trouble code for (evaporative emission control system leak detected "small leak") it means that the OBD-II system has detected a small vacuum leak in the evaporative control system.

You will need to find the vacuum leak in the evaporative control system, check for cracked or broken vacuum lines and hoses, especially the vacuum hoses and lines around the evaporative (Evap) canister and the (Evap) solenoid. Also check the gas cap seal for damage.

Vacuum hoses and lines should be checked very well for any cracks or breaks, because they usually hide under the vacuum line or hose.

May 02, 2010 | 2001 Dodge Durango

2 Answers

Engine light codes p0440,p0442-found a fuel leak on left top side of engine,has a vacuum hose hooked to it is this the fuel pressure regualator?


P0442 Evaporative Emission Control System Leak Detected (small leak)
P0440 Evaporative Emission Control System Malfunction

Jan 30, 2010 | 2000 Pontiac Grand Am GT

1 Answer

My check engine light on my 2001 hyundai accent gl reads code po441, po442. What does these codes mean?


Most of the time they mean:
p0441 = Evaporative Emission System Incorrect Purge Flow
p0422 =
Evaporative Emission Control System Leak Detected (small leak)

MOre info at http://www.obd-codes.com/p0442

Jan 10, 2010 | 2001 Hyundai Accent

3 Answers

Code po442 small leak (emmisions). How should i trouble shoot this problem? Could an exhaust leak cause this code to come up?


P0442:Evaporative Emission System Leak Detected (small leak)
what this system does is collect and store gas fumes, it also uses vacuum to detect any fuel tank or line leaks, it has zero to do with exhaust leaks, this code is often caused by a loose gas cap or a defective gas cap, so check the gas cap and make sure it is properly secured, if it is clear the code and see if it comes back, also never fuel the car with the engine running or the key turned on, this will trigger P0442.

Dec 06, 2009 | 2001 Pontiac Grand Am SE

1 Answer

Failed Emision test


po442 is evap emission control system leak (small) 1 of the lines for emissions is leaking. po455 is-- emission control system leak (large). turn off light with code scanner after it is fixed.

Sep 01, 2009 | 2001 Dodge Caravan

1 Answer

I Have A 1999 Grand AM,I Have Gas In Oil,Car Runs Good,No Missing,Smoking.I Had Engine Light On And Had Auto Zone Run Check Which Gave Code PO442,Evaporative emissions control system, small leak detected


The gas in the oil thing can only be fuel injector related.I would start by useing a good fuel injector cleaner(recomend BG 44k)and see if that helps.On the emission code I would start by replaceing the gas cap.Its pretty common.

Mar 05, 2009 | 1999 Pontiac Grand Am GT

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