Question about 1998 Toyota Camry

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Code po440 evaporative emissions system & check engine light on

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P04440 is a generic error code for the fuel vapour evaporative emission control system. This system is designed to trap fuel vapour build up in the fuel tank in a carbon canister and then to release these trapped vapours to be burnt when the engine is running. The car has a diagnostic process by which it checks the pressure integrity of the system. Anything out of the ordinary can result in the P0440 error. Check that your filler cap has a good seal and that it is fitted tightly. If this sorts out the problem the error code and CEL will disappear within a few restarts of the engine.

Posted on Nov 22, 2010

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2003 Chev Trail Blazer. Codes: PO440, P151 & P1481 pull up. what are they?


P0440 = evaporative emissions system leak...check gas cap , hoses

P0151 = evaporative emissions systems sensors (O2 sensor, usually the O2 sensor between engine and catalytic converter on Cylinder Bank 2 (the side of the engine with the even-numbered cyclinders, usually left side from under hood if engine is mounted axially, rear of engine if it is mounted transversely)

P1481 = cooling fan speed

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Engine codes p0440,p0441


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code p0441 refers to EVAP system--incorrect flow detected===causes---hose connections --intake leak--EVAP canister purge valve.
once you fix the fault use a scanner to reset the engine light.

Apr 09, 2014 | 2005 Chrysler Town and Country

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What does po440 on a 2003 saturn vue mean with a service engine soon light on


That is a problem in the evaporative emission control system.
Could be anything causing it
Clogged filter in the charcoal canister
A leak in one of the vacuum lines
The purge valve not working,,,etc.
The best thing is to take it and have it checked out, they might have to do a smoke test to find the problem.
All they do is inject smoke into the system, if there is a leak the smoke will come out of it. All it takes is a pin hole in these emission systems to screw it all up.

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Check Engine lite comes on Code PO440


16824/P0440/001088 - EVAP Emission Control Sys: Malfunction Possible Symptoms
  • Malfunction Indicator Light (MIL) active
Possible Causes
  • Evaporative Emission (EVAP) System leaking
  • Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) faulty
  • Evaporative Emission (EVAP) Canister Purge Solenoid Valve (N115) faulty
Possible Solutions
  • Check Evaporative Emission (EVAP) System Sealing
  • Check Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)
  • Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve (N115)

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I have a 2001 nissan sentra xe and my check engine light is on i had a diagnostic test and the codes PO 455 and PO 0440 came back what does this mean?


PO 455- Evaporative emission control System leak detected (check exhaust system, egr valve, or entire intake and exhaust system)


PO440- Evaporative Emission System Malfunction (also check oxygen sensor)

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I get a po440 and a po440 pd code


evap emission control system malfunction, po440

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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.

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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

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1 Answer

1997 toyota camry check engine light on,code po440,po420,po441,


P0420 is catalyst system efficiency below threshold (bank 1)

P0440 is evaporative emission control system malfunction

P0441 is evaporative emission control system incorrect purge flow

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