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2000 Olds Alero Code: P0440 and P0442 - 2000 Oldsmobile Alero

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 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

Posted on Jan 03, 2009

polarcycle
  • 1392 Answers

SOURCE: cant find the low pressure port to charge a/c on 2000 olds alero

It should be near the compressor on the low side line. It is a huge pain to get to. Feel along the line, and you should come to the fitting.

Posted on Mar 06, 2009

66 chrgr
  • 1011 Answers

SOURCE: p0442 p0456 p0440 dodge durango

replace your evap solenoid this should fix it.

Posted on Jun 21, 2009

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SOURCE: 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.

Posted on Sep 28, 2009

  • 1 Answer

SOURCE: Got error codes P0440, P0440 (pd), and P0442 which

It is probably a sensor that goes by the gas tank. I belive it is called a Fuel Vent Sensor Circuit. That should fix the problem.

Posted on Dec 16, 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

1 Answer

2000 olds alero v6 spark plug firing order diagram


2000 Oldsmobile Alero 3.4 liter V-6 VIN "E"

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Hope helps (remember rated this).

Jul 05, 2010 | 2000 Oldsmobile Alero

1 Answer

I have a 2002 olds alero. it started with the car stauling while driving. then not wanting to start, then not starting at all. it had been a month of not starting and today i used quick start and it got it...


Could be a clogged fuel filter. However since the emissions code is alerting you it may be the oxygen sensor. Try changing the fuel filter first as the oxygen sensor is much more expensive. Thanks for asking!

Jun 29, 2010 | 2002 Oldsmobile Alero

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

Got error codes P0440, P0440 (pd), and P0442 which indicates a small leak detected in the evap emission system on my 2000 Lexus ES 300. Already replaced the gas cap. Any ideas?


It is probably a sensor that goes by the gas tank. I belive it is called a Fuel Vent Sensor Circuit. That should fix the problem.

Oct 17, 2009 | 2004 Lexus LS 430

2 Answers

I have a 2000 Alero Oldsmobile, engine light is staying on it is a error code p0442, I replaced the gas cap and the canister, and the light is still coming on. Does anyone know what the problem could be?


There may be and EVAP solenoid that is leaking. THe OLDS Aurora has this and it is a common failure with this code. Also, the evap lines run to the fuel pump on the top of the gas tank. Some cars have an access panel in the trunk under the carpeting, near the back seat on the right hand side.

Sep 29, 2009 | 2003 Oldsmobile Alero

1 Answer

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

Jan 03, 2009 | 2003 Oldsmobile Alero

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