Question about 1998 Nissan 200SX

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I have a p0440 code popping up in my emissions..i have traced the hoses and found no cracks. how do i fix it myself?

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Start by finding out what the area the code is in.

Posted on Sep 30, 2009

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Check engine light shows OBD fault code P0440 EVAP Ctrl System Malfunctionfree engine fault codes


code p0440 refers to evaporative emission (EVAP)system malfunction===causes--hose connections--intake leak--EVAP canister purge valve. Check all hose connections and replace the canister purge valve.. If you can locate the unit you should be able to replace it yourself

Sep 21, 2013 | Daewoo Leganza Cars & Trucks

1 Answer

Got Code P0440 Mechanic Said it is its a Vacuum Pump (assummining its the same thing as a leak detection pump) if so where is it located and how difficult is it to replace


code P0440 refers to evaporitive emissions (EVAP) system problem.Most likely problem is a vacuum hose leak or an intake system leak.Check all the vac. pipes for cracks or loose fitting.

Aug 06, 2013 | 2004 Jeep Liberty

3 Answers

I HAVE CODE 0440 MY SERVICE SOON LIGHT ON I FIX FUEL CUP BUT STILL ON LIGHT WHAT TO DO


P0440 - Evaporative Emission Control System Malfunction
Possible causes- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking Tech notes Loose fuel tank filler cap is the most common cause that triggers the P0440 code.

Sep 17, 2012 | 2002 Pontiac Grand Prix

1 Answer

Code p0440 code p0441 code p0446on toy echo 2000 what is the diagnosis?


P0440 Evaporative Emission Control System Malfunction P0441 Evaporative Emission Control System Incorrect Purge Flow P0446 Evaporative Emission Control System Vent Control Circuit Malfunction
  • Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
  • Inspect the EVAP system for cuts/holes in tubes/hoses
  • Inspect for damaged or disconnected hoses around the Evap purge solenoid
  • Check and/or replace the sensor
  • Check and/or replace the purge valve
  • Have a professional use a smoke machine to detect leaks

Aug 19, 2011 | 2004 Toyota ECHO

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

2 Answers

2002 chevy trailblazer what does EVAP Emission control system malfunction code #P0440 on an actron code scanner


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

Sep 21, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

Engine light on code is po440


P0440 Fuel tank vapor emission problem.
Could be as simple as a leaky gas cap.....or a missing gas cap.

Have you purchased gas and left the engine running as you filled it?
That will turn on the light too.

The P0440 is one of the most common codes and pops on the dash of 50% of cars on the road as they get older on a weekly basis.
An extremely small vapor leak on the fuel system will pop this code on.
Most of the time.....this code cannot be fixed......the answer is to buy a cheap OBD2 code reader and remove the code yourself every time it pops on........and on the 50% of cars with it......it shows up about 2 times a week.
When the engine light is on,you will loose 20% of gas mileage and has 20% higher emissions.....so turn it out!
Some cars will not go into overdrive with this light on.

Sep 04, 2009 | Toyota Solara Cars & Trucks

1 Answer

1999 Deville w/ P0741 code and engine mis-fire, and P0440


evaporative emission control system po440. Check for emission evaporative hose loose from fuel tank or loose fuel cap.

Jun 13, 2009 | 1999 Cadillac DeVille

3 Answers

2000 lexus es300 error code p0440, p0441, p0446


P0440 Evaporative Emission System, P0441 Evaporative Emission System Incorrect Purge Flow , AND P0446 Evaporative Emission System Vent Control Circuit

Apr 23, 2009 | 2004 Lexus LS 430

3 Answers

Want does p0440 code mean


P0440 - Evaporative Emission (EVAP) System

This indicates that a part of the EVAP control system is no longer functioning 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.

Please rate and have a great evening:)

Apr 23, 2009 | Chevrolet Astro Cars & Trucks

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