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2002 evap code 403 won't go away. professors at a college confirm it is a driveability issue.

Is there someone out there that has or is having same problem. all parts in evap system have been tested and are perfect. no leaks. i have an actron code reader with a drive cycle monitor in it and evap system goes from open to closed but it keeps kicking on that light. these professors say it is a driveability issue and possibly the computer will decide to handle it. i do not want any guesses, i need someone that is familiar with this. thank you.

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  • Cars & Trucks Master
  • 12,207 Answers

This code has nothing to do with the evaporative emissions system ! This is for the EGR valve.
P0403 Exhaust Gas Recirculation Circuit Malfunction ! You see the word CIRCUIT MALFUNCTION . electrical problem . Now what year, make , model an engine size,?

Posted on Jun 23, 2017

  • Jeff Armer Jun 23, 2017

    The powertrain control module (PCM) monitors the exhaust gas recirculation (EGR) valve pintle position input to ensure that the valve responds properly to commands from the PCM. The linear EGR valve is controlled by using an ignition positive driver and ground circuit within the PCM. The driver has the ability to detect an electrical malfunction in the ignition positive or ground circuit. If an electrical malfunction occurs, the driver signals the PCM to set this DTC.

  • Jeff Armer Jun 23, 2017

    Test the electrical circuit an viewing scan data is the way to a fix , if you don't know this ,your best bet would be to take it to a qualified repair shop ! Dealer .



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Posted on Jan 02, 2017

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SOURCE: I have a 2004 Jaguar evap control system leak,

If your wanting to know what to check. po445 is the purge solenoid control circuit, po447is the evap vent solenoid control circuit.Check the connections, and the wiring for shorts, or replace solenoid. Could also be a failed pcm.

Posted on Mar 10, 2009

  • 323 Answers

SOURCE: we have a 2002 dodge durango that we bought used

A small evap leak is usually a vapor line with a small crack in it or fuel cap seal. The vapor lines usually crack where they meet a plastic or metal line attachment. Where the line has to swell a bit to fit the other line is where the small crack occurs. You can feel each line at these points and find the crack. It will feel smooth all the way around and then a rough spot. Check the lines going to the service port under the hood and then follow them back to the canister looking closely at each connection. If you don't find anything replace the fuel cap and retest. It is rarely any of the other system parts you mentioned. If it goes undetected long enough a new code will come up as P0442 medium evap leak, meaning the crack has become bigger and possibly easier to find. It is strictly emissions and will have no effect on the way the vehicle runs.

Posted on May 18, 2009

  • 3 Answers

SOURCE: Leak in evap system, where and what is an evap system. 2001 mitsubishi Galant

I have the same failure that occurred when smogging my Ford Ranger. The EVAP test was just added a couple of years ago and it tests for leaks in the gas tank vapor recovery system. What this is a system of vapor recovery lines that connect from the gas tank and goes to a canister then returns to the intake and on the next engine start and gets used, instead of leaking into the air.

The only issue is these lines can develop a leak at any of the connection points or along the rubber portions and can be a pain to replace depending on your application. So until you fix the leak you will fail this test since they pressurize the system and if there is a leak it won't hold the pressure.

Posted on May 22, 2009

  • 12650 Answers

SOURCE: 2002 chevy trailblazer what does EVAP Emission

most p0440 codes are related to gas cap problem check cap and reset code if it the problem code pops problem with a fuel line follow lines from filler neck down and under vehicle[ look for smell of gas or cracked line] all the way up to throttle body if have leak fix asap

Posted on Sep 26, 2009

  • 1 Answer

SOURCE: Daewoo Nubira 2002 (Purge Valve) replacement question How To

where can i find the Purge Control Valve in my daweoo 2002 nubira

Posted on Aug 28, 2010

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2 Answers

Is it safe to drive my 2010 impala on a 400 mile round trip with a evap leak that was just detected 2 weeks ago

Yes, you can drive with evap codes. There is no harm to the car, but there may be some harm to the environment.

Sep 13, 2017 | Cars & Trucks

1 Answer

PO315 Code?

You tell us why they could not clear data

You clear all data,not just one code

The code came back because that system
was not repaired yet & now the shop wants to
get away from your car & work on easier money
making jobs

If you google your PO315 --- the shops really don't
have to go to their data base, as there is info on the problem
on the internet

They either never found the real issue or put one in the car

I think they ran out of knowledge

You appear to still have CPS issues

They could not clear the code because the computer
can not recognize the crank sensor

You & I can see some of the possibles on the computer,
why can't a shop

Scan tool data would show all sorts of issues

They never road tested or looked at data-- to confirm any
work they did

Read the info on that code PO315 for a chevy

You do not give back a vehicle until you drive it 20 miles
or more & all but the Evap Monitors runs & you have no
OBD Codes in memory & confirm your work

Need a better shop for sure

Aug 17, 2014 | Cars & Trucks

1 Answer

My 02 camry le failed emmission test whats wrong error codes po440, po441, po446, po420

You have codes for a failed exhaust converter,PO420,
EVAP System problem PO440,Incorrect Purge Flow PO441,
Evap Vent Control issues,PO446

Your car is all messed up

That should have been all checked, BEFORE you spent time
in line for inspection

If all the codes are for real & not a false report

You will need new spark plugs,ignition & fuel checked,
new exhaust converters,new evap purge valve,new evap
vent solenoid & possibly vacuum leaks resolved

You either bought someones neglected vehicle or never
do a thing but drive it

May be easier to get a different vehicle,your repair bill
will start at $1,000 & go up, from not being proactive & taking
care of what is required in owning any vehicle (lack of knowledge)

You will need the oxygen sensors also & no, they won't fix the
amount, of what appears to be several failed items, all at one time

So much for Toyota being better than other vehicles

Apr 03, 2013 | 2002 Toyota Camry

1 Answer

Toyota echo won't start code 440 441 446

Error Code: P0440
Fault Location:
Evaporative Emission (EVAP) System - Malfunction
Possible Cause:
Malfunction Indicator Lamp (MIL) active.
Check Evaporative Emission (EVAP) System Sealing.
Check Evaporative Emission (EVAP) Canister Purge Regulator Valve .
Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve .

Error Code: P0441
Fault Location:
Evaporative Emission (EVAP) System - Incorrect Flow Detected
Possible Solutions:
Check Evaporative Emission (EVAP) Canister Purge Regulator Valve .
Perform Output Test.
Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve .
Check Evaporative Emission (EVAP) Canister.
Perform Basic Setting.
Check Pipes between Tank Breathing and Throttle Body.

Error Code: P0446
Fault Location:
Evaporative Emission (EVAP) System, Vent Control - Circuit Malfunction
Possible Cause:
Wiring harness.
Evaporative emission (EVAP) canister purge valve.
Engine control module (ECM).

Feb 25, 2013 | 2002 Toyota ECHO

1 Answer

I received the following code for a 2006 Saturn Ion with a 2.4 Litre motor P0446 what is is and how do I fix it?

Trouble Code: P0446

Evaporative Emissions (EVAP) Vent System Performance

Possible Causes:

The EVAP system tests run when the engine is first started and meets the Conditions for Running the DTC. An intermittent condition could be caused by a damaged EVAP vent housing, a temporary blockage at the EVAP canister vent inlet, or a pinched vent hose. A blockage in the vent system will also cause a poor fuel fill condition.An EVAP canister, vent hose, or vent solenoid valve that has restricted flow may cause this DTC to set. Using a purge solenoid command with a scan tool will allow vacuum to be applied to the system instead of pressure. With the engine running, the EVAP canister vent solenoid valve open and the EVAP canister purge solenoid valve commanded to 100 percent, the fuel tank vacuum should not increase to more than 5 inches H2O.An EVAP canister filter that is restricted can cause this DTC to set. Refer to Evaporative Emission (EVAP) Canister Filter Replacement and Evaporative Emission (EVAP) System Cleaning .Disconnecting one component at a time while the EVAP system is under flow will help to pinpoint a restriction in the system.Reviewing the Failure Records vehicle mileage since the diagnostic test last failed may help determine how often the condition that caused the DTC to be set occurs. This may assist in diagnosing the condition.For intermittent conditions, refer to Intermittent Conditions .

Dec 29, 2012 | 2006 Saturn ION

1 Answer

Gross leak no flow

Those two codes are referring to the EVAP system. Typically they do not effect Driveability (there is no noticeable difference in vehicle performance wh e there are problems with the EVAP system). Occasional on the caravans the rubber EVAP hose that goes to the intake cracks and can cause some minor symptoms. This hose will be on the passenger side of the motor, under the air tube that attaches to the throttle body.

Aug 07, 2012 | 2002 Chrysler Town & Country

1 Answer

Fuel tank diagram? thinkon about buying a 2002 explorer, but they have issues fueling it up. any suggestions? or stay away from it

If they have a problem of the fuel "kicking off" while filling, it probably has a problem with the evap "vent solenoid." This opens and closes your evap system. This problem would possibly turn on a check engine light. Make sure the light works, and goes out when started. Of course you will need to get it diagnosed to verify the issue. If it is the vent solenoid, it's not an expensive fix, if done by a good mechanic.

May 30, 2011 | 2002 Ford Explorer

2 Answers

Po455 trouble code, seems like all the hoses are good. Sometimes goes away for a week sometimes a few hours,any ideas?

P0455 - Evaporative Emission Control System Leak Detected (no purge flow or large leak)

This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. 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 p0455 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)
Other leak or damaged piece in EVAP system

Possible Solutions: With a p0455, 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, and/or
Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary

Test, check it and keep us updated.

May 25, 2011 | Hyundai Elantra Cars & Trucks

1 Answer

It wont turn on,i have to give it some gas to make it come on.and when i press the brakes to stop it turns off and it pop up the codes P0440-P0014-P1345(gmc envoy 2002 )

P0440: This indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. 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, you will likely not notice driveability problems with this code.

P0014: This indicates a camshaft position sensor problem which could cause your driveabilty issues.

P1345: This is a crankshaft or camshaft position sensor malfunction which could also be an issue with your driveabilty, i would have this checked by a professional scan tool such as a modis.

Jan 28, 2011 | 2002 GMC Envoy

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