Question about 2004 Dodge Caravan

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Check engine light on, will not shift out of first

Ran great with light on, checked with scanner and showed evap. emission problem. started it one day (real cold outside) and it refused to shift out of low. code after 3 on off cycles said p0700 .

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P0700 trans control system malfunction

Posted on Mar 03, 2009

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Hi, my AudiTT 03 has an engine warning light on, scanner showed Evap Emission Control System Incorrect Airflow, mechanic took it off, two days later its returned, also car has been taking a few more turn...


Warning: I'm not a professional mechanic but I do have some experience working on Evap codes.
As far as I know, this code will have no effect on the starting or performance of the engine, so you may have a separate issue.
Your Evap Emission Control System can have a number of problems.
Incorrect flow could be caused by debris in one of your Evap lines, a faulty Purge Valve Solenoid, or Charcoal Canister, among others.
A qualified mechanic will have the proper diagnostic tools to test this.
Evap codes can be very hard to diagnose for a mechanic not familiar with these systems.
Other codes that come up sometimes with Evap systems are leaks.
This occurs when the gas cap is loose, or there is a hole rusted in the gas tank or filler neck. This does not sound like your problem, because a leak should show up on the code scanner.

Aug 18, 2014 | Cars & Trucks

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Evap system problem, 2008 silverado extended cable 5.3 Flexfuel check engine light is off, but, the scanner is showing evaporative system , no code, only yellow light, it won't pass the emissions. I a


Did the garage check the gas cap during the emission test? 90% of the time an evap leak turns out to be a bad gas cap. Or if someone had gas cap off while engine was running (pumping gas). Or if gas cap was not tightened all the way while driving. If this is the case, code saying evap leak, will clear after drive cycle self tests are done. Usually after 50 miles or more.(if the leak is solved)

Apr 25, 2014 | Chevrolet Cars & Trucks

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Emission light came on


The problem was there & will come back

So check for codes Generic & Enhanced

Have a shop road test with scanner & look at all data
Go along for the ride

If you just got gas it may be the cap was loose at the
time the evap monitor ran,but there will be a trail most likely
in the PCM (computer) codes & such

A 2004 vehicle most likely has lots of preventative maintenance
that needs to be done,while doing that something will show up on
a scanner,only if you tell a shop what you want done.

Apr 09, 2014 | 2006 Ford E-150 Chateau

1 Answer

Engine codes p0440,p0441


code po440 refers to evaporative emission (EVAP) system--malfunction ===causes --hose connections --intake leak--EVAP canister purge valve
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

1 Answer

Where is evap emission


Your evap emission system is your pressurized fuel system. If you are getting a check engine light and the scan is throwing an evap code start by changing your fuel cap. It is the cheapest part of the system and quite common to fail. Unfortunately if you change your cap and erase your fault codes and the check engine light returns for evap system again, you will probably end up at the dealership to track down the leak.

Apr 20, 2013 | 2005 Buick LaCrosse

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.
Soution:
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

2 Answers

Code says evaporator purge solenoid


Which code specifically? Do not assume you need a new solenoid. Our recommendation will depend on the specific code and some troubleshooting results. I usually recommend checking over all the EVAP vacuum lines and the gas cap too whenever there is a purge valve code. Check the vacuum lines at the cannister in the left rear bumper. I will paste info on the purge solenoid below.

P0440 Evaporative emission (EVAP) system - malfunction

Possible causes: Hose connection(s), intake leak, EVAP canister purge valve


P0441 Evaporative emission (EVAP) system - incorrect flow detected

Possible causes: Hose connection(s), intake leak, EVAP canister purge valve


P0442 Evaporative emission (EVAP) system - small leak detected

Possible causes: Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve


P0443 Evaporative emission (EVAP) canister purge valve - circuit malfunction

Possible causes: Wiring, EVAP canister purge valve, ECM


P0444 Evaporative emission (EVAP) canister purge valve -open circuit

Possible causes: Wiring open circuit, EVAP canister purge valve, ECM


P0445 Evaporative emission (EVAP) canister purge valve -short circuit

Possible causes: Wiring short circuit, EVAP canister purge valve, ECM


P0450 Evaporative emission (EVAP) pressure sensor - circuit malfunction

Possible causes: Wiring, EVAP pressure sensor, ECM


P0455 Evaporative emission (EVAP) system - large leak detected

Possible causes: Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve


P0456 Evaporative emission system - very small leak detected

Possible causes: Mechanical fault, hose connection(s), EVAP pressure "sensor


P0457 Evaporative emission system - leak detected (fuel cap loose/off)

Possible causes: Mechanical fault, hose connection(s), EVAP pressure sensor


P0458 Evaporative emission system, purge control valve -circuit low

Possible causes: Wiring short to earth, EVAP valve


P0459 Evaporative emission system, purge control valve -circuit high
Possible causes: Wiring short to positive, EVAP valve


Evaporative Emission Purge Solenoid

Description & Operation
The duty cycle EVAP canister purge solenoid (DCP) regulates the rate of vapor flow from the EVAP canister to the intake manifold. The Powertrain Control Module (PCM) operates the solenoid.
During the cold start warm-up period and the hot start time delay, the PCM does not energize the solenoid. When de-energized, no vapors are purged. The PCM de-energizes the solenoid during open loop operation.
The engine enters closed loop operation after it reaches a specified temperature and the time delay ends. During closed loop operation, the PCM cycles (energizes and de-energizes) the solenoid 5 or 10 times per second, depending upon operating conditions. The PCM varies the vapor flow rate by changing solenoid pulse width. Pulse width is the amount of time that the solenoid is energized. The PCM adjusts solenoid pulse width based on engine operating condition.
Removal & Installation
The duty cycle evaporative (EVAP) canister purge solenoid is located in the engine compartment near the brake master cylinder.

  1. Disconnect electrical connector at solenoid.
  2. Disconnect vacuum lines at solenoid.
  3. Lift solenoid slot from mounting bracket for Removal & Installation.

To Install:
  1. Position solenoid slot to mounting bracket.
  2. Connect vacuum lines to solenoid. Be sure vacuum lines are firmly connected and not leaking or damaged. If leaking, a Diagnostic Trouble Code (DTC) may be set with certain emission packages.
  3. Connect electrical connector to solenoid.
Purge solenoid location:

jturcotte_65.gif
EVAP cannister location:
jturcotte_66.gif

Nov 05, 2010 | 2000 Jeep Grand Cherokee

1 Answer

Emission control system malfunction code po446 shows up on diagnosis. What parts should be replaced? The check engine light comes on, it reads the above and i reset it. Then several days later the check...


Code p0446 is for EVAP vent valve performance. Unfortionly there isn't just one item that can cause this code and the test require the use of a scanner. You can do a visual check but other then that with out scanner its just going to be replace and hope. That could wind up being exspensive. 1116f81.png

Oct 28, 2010 | 2003 Buick Rendezvous

1 Answer

Failed Emision test


po442 is evap emission control system leak (small) 1 of the lines for emissions is leaking. po455 is-- emission control system leak (large). turn off light with code scanner after it is fixed.

Sep 01, 2009 | 2001 Dodge Caravan

1 Answer

Check engine light comes on, gauges light comes on


What sensors did you replace? It sounds like a problem that could be caused by something in the evaporative emission system, like a faulty purge solenoid or evap cannister problem. Does the tank take fuel slowly when filling up? You could also have a faulty gas cap. That is the first thing I would look at. It is an integral part of the evap system. Hope this helps and best wishes.

Jul 23, 2009 | 1990 Plymouth Voyager

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