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2000 Saturn SL2 failed emissions test for 02 Sensor and Evap syst

Said 'Small" evap system leak and I just recently (last 6 months) replaced my gas cap  and also the O2 Sensor in the front under the hood I replaced(meaning I did it myself not had someone else install it) within the last 9-12 months max. The paper from the emissions place says "PO133 O2 Sensor Circuit Slow Response (Bank 1(1) Sensor 1) and PO442 Evaporative Emission Control System Leak Detected (small leak). Please someone help walk me through how to fix these things quickly and cheaply. I know I need a new car but that isn't an option right now and spending another 100 bucks on this car isn't an option either. I think the computer needs to be cleared?? but I don't know how to do this.

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  • srv4freak May 11, 2010

    What Engine do you have??

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

gforce3s
  • 31 Answers

SOURCE: emissions failed

a small evap leak can be caused by many things, and correct in most of the time it is the gas cap. i would try replacing that, and having the cel cleared. but as i said if there is another leak somewhere in the system such as the filler neck or any of the multiple solenoids and vacum lines, that will need to be taken care of as well.

Posted on Dec 11, 2008

freetek
  • 5568 Answers

SOURCE: Evaporative emission system - small leak/no BB flow condition

Although I recommend you buy a Haynes service manual for your Dodge, I think you will find the canister attached to the firewall or one of the fender wells. Most of them look a lot like an overgrown spam can and it will have two connections on it.

Posted on Mar 06, 2009

  • 3 Answers

SOURCE: Service Engine and Service Vehicle lights

You can generally find a vaccum leak by pressure testing the system. Most auto parts stores sell a vaccum tester relatively cheap. Or you can take it to a shop and they will pump your sytem full of a uv sensitive die and then use a black light to find the leak. If it says vaccum leak at engine on the vent solenoid then all you need is the schematic of your vaccum system to find the solenoid and you should find your leak theoretically.

Posted on Apr 04, 2009

redbeard00
  • 957 Answers

SOURCE: 98 buick regal ls - po442 obd code

Usually the source of the leak is the gas cap (either loose or defective) but if that doesn't apply to your issue then the canister is next to the gas tank.

Posted on Jun 09, 2009

  • 212 Answers

SOURCE: REPLACEMENT (EVAP)

THERE IS A PURGE VALVE ON TOP FRONT OF INTAKE AND A VENT VALVE IN REAR ON DRIVER SIDE NEAR GAS TANK.GM HAS A UPDATED REPLACEMENT VENT VALVE WITH HOSES FOR $300. PURGE AND VENT VALVE WORK TOGETHER TO VENT FUEL VAPORS FROM GAS TANK.

Posted on Jan 28, 2010

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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

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

1 Answer

Po442 check iight


p0442 means Evaporative Emission Control System Leak Detected (small leak)

What does that mean?
The vehicle's PCM (powertrain control module) tests the evaporative emissions (EVAP) system for large and small leaks among other conditions. In the case of this DTC, it 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
The only thing you will notice is the Malfunction Indicator Lamp (MIL) a.k.a. Check Engine Light will be illuminated. You likely won't notice any drivability problems although sometimes a fuel odor may be noticed.
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 Defective vent valve Defective purge valve Defective leak detection pump
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 (we recommend an OEM not aftermarket part), or Inspect the EVAP system for cuts/holes in tubes/hoses More advanced troubleshooting steps include: Using an advanced scan tool, perform an EVAP leak test Verify operation of the EVAP purge solenoid / valve Perform a smoke test to see where the leak is

Oct 20, 2013 | 2007 Saturn Aura XR

1 Answer

Engine scan codes are P0442, P0456 , can you please help me with these codes


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



P0456 - Evaporative Emissions System - Small leak detected
The Powertrain Control Module (PCM) at different times performs various tests on the EVAP system. OBD II Enhanced EVAP systems are in place to keep fuel tank vapors from venting into the atmosphere, and instead purges them into the engine to be burned. Regular pressure tests are conducted by the PCM to monitor the sealed system for leaks. The PCM monitors the EVAP system pressure by watching the fuel tank pressure (FTP) sensor. When the sensor indicates a small leak in the EVAP system, this code is set.

Potential Symptoms: There will likely be no noticeable symptoms other than the Malfunction Indicator Lamp (MIL). This is because the EVAP system is a closed system and only controls fuel tank vapors, not engine management.

Causes: Usually this P0456 code is caused by an incorrect or faulty gas cap. Filling the fuel tank with the engine running could conceivable cause this code as well or if the cap wasn't properly tightened. Any of the following could also be the cause:
A small leak in any of the EVAP hoses or fuel tank hoses
A small leak in the purge valve or vent valve
The EVAP Canister may be leaking

Possible Solutions: First, using a scan tool activate the vent solenoid, sealing the system. Then monitor the fuel tank pressure (FTP) sensor. If the system is sealing properly, the number will stay consistent. If is isn't, the pressure sensor will show that as well. If the system slowly leaks, use a smoke machine and watch for smoke exiting the system at any EVAP component. Any where there is smoke exiting the system, that is the faulty component. Do not pressurize the EVAP system with air pressure. Doing so can damage the purge and vent solenoids in the system.


Test it; keep us updated and remember to rate this answer.

Jun 03, 2011 | 2005 Dodge Grand Caravan

2 Answers

Small evap leak


this could be due to a cracked line for the evap or a bad vent valve or bad purge valve, check all the evap lines closely for cracks, this would be better with an evap machine, you would be able to smoke test, this is done by filling the evap system with smoke in order to test for a leak, if it passed the smoke test then the next thing is to test the vent valve to make sure it closes good, this is done with the smoke and by powering the valve shut,and making sure it doesnt leak, most saturns i work on end up with bad vent valves or a cracked line, hope this helps.

Apr 17, 2010 | 1999 Saturn SL

4 Answers

2000 Saturn SL2-" Service engine soon light" won't go out, even after having oil changed. Any ideas? Advance Auto's light says code: P0440.


You have to have one of the parts stores clear it. Did you check you gas cap. P0440 Is an emissions codes usually caused from a loose gas cap

Aug 20, 2009 | 2000 Saturn SL

1 Answer

PO442 Evatorative Emission Control System Leak Detected


That code is for a small leak in the evap system. Those are sometimes very hard to find, even with the right tool. I would start with making sure Your gas cap is tight and works, maybe even just replace it. Otherwise, I would inspect the evap hoses and lines very closely. look for any cracks or loose connections.

Aug 14, 2009 | 2002 Saturn L-Series

3 Answers

2000 cavalier check engine light code po440


P0440 - Evaporative Emission (EVAP) System


evaporative emission (EVAP) system has a large leak.
Check the gas cap or vent valve. these are the most common problems.


The Powertrain Control Module (PCM) at different times performs various tests on the EVAP system. OBD II Enhanced EVAP systems are in place to keep fuel tank vapors from venting into the atmosphere, and instead purges them into the engine to be burned. Regular pressure tests are conducted by the PCM to monitor the sealed system for leaks. The PCM monitors the EVAP system pressure by watching the Fuel tank pressure sensor (FTP). When the sensor indicates a small leak in the EVAP system, this code is set.


Here are some additional causes.

* A small leak in any of the EVAP hoses or fuel tank hoses
* A small leak in the purge valve or vent valve
* The EVAP Canister may be leaking

Jun 06, 2009 | 2003 Chevrolet Cavalier

1 Answer

Jetta 2.0 2000


16826/P0442/001090 - EVAP Emission Control Sys: Small Leak Possible Symptoms
  • Malfunction Indicator Light (MIL) active
Possible Causes
  • Evaporative Emission (EVAP) System leaking
Possible Solutions
  • Check Evaporative Emission (EVAP) System Sealing
    • Check Fuel Cap

May 22, 2009 | 1999 Volkswagen Jetta

2 Answers

01 sonata gls v6...code po455, po442. what are these and how can I pass emissions test in arizona


If you have an EVAP leak, you will get the following codes:

1. P0442 evap emission control system leak (small).
2. P0455 evap emission control system leak (large).

If these codes come up, you need to trace the leak. The most common place for the systems to leak besides the gas cap is at the service port under the hood, the hoses at the purge solenoid, and the hoses around the fuel tank. Check all your EVAP hoses from under the hood , all the way back to the gas tank. You can repair a split hose easily. Buy some 14.5mm EVAP hose at the auto parts store. Just cut the split or cracked section out and attach the new hose.

I can only say that u must fix the code issue and light to pass state emission test, if u reset the light they will know, the system will tell the tester that the system is not ready, this will cause a fail.

Mar 16, 2009 | 2001 Hyundai Sonata

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