Question about Ford Ranger
2003 ford ranger v6 p0443 trouble code keeps setting mil
Fuel Pressure sensor?? - NO
EVAP purge/vent solenoid circuit condition
the solenoids and system wiring are monitored for opens or shorts
1- purge or vent solenoids defective
2- check for loose connector and bare wiring
3- fuel saturated vapor canister
4- failed evap vent solenoid
Most likely failed part is the EVAP canister - most people top off their takn and instead of just fumes going to the canister - gas does and saturates the medium (charcoal) so your sensors go crazy!!
There is also a solenoid, and a purge flow sensor, you should always change both as a set, most likely if it is one of them - the sensor is bad.
Thanks for using FixYa - if you need further claification - please use the "Continue with this expert" option so we are connected later.
Thank You !! :D
Posted on Apr 23, 2009
1st off this code can be caused by a plugged charcoal canister air vent or a fuel loaded canister.
here are common causes, remember this is a problem in the circuit, it doesn't mean the pruge vave is defective, read on below.
* P0443 indicates an electrical problem in the charcoal canister purge
valve. Since it's in a rather hostile environment, check the connector first to be sure the contacts are bright and shiny and that the connector is undamaged and pushed all the way in - should be that tiny little 'click' as the lock tab engages. If there is any doubt at all, make sure all is clean and tight,
clear codes and see if it returns....
Posted on Apr 22, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 01, 2016 | 1995 Jaguar XJ6
Mar 29, 2011 | 2000 Pontiac Firebird
Evaporative Emission Control System Purge Control Valve Circuit
What does that mean?
The Evaporative Emissions System (EVAP) allows fumes from the gas tank to enter the engine to be burned, rather than vented into the atmosphere as an emission. The purge valve solenoid is supplied switched battery voltage. The ECM controls the valve by operating the ground circuit, opening the purge valve at specific times allowing these gasses to enter the engine. The ECM monitors the ground circuit as well, watching for faults. When the purge solenoid isn't activated, the ECM should see a high voltage on the ground circuit. When the solenoid is activated, the ECM should see the ground voltage pulled low, close to zero. If the ECM doesn't see these expected voltages, or senses an open in the circuit, this code is set.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook Potential Symptoms
P0443 trouble code symptoms could be just an malfunction indicator lamp (MIL) illumination. There may be no drivability problems at all. But, it's also possible to have a lean condition or a rough running engine if the purge valve is stuck open. Usually though, these symptoms are accompanied by other EVAP codes. Another symptom may be excessive pressure in the gas tank in the form of a "whooshing" sound when the cap is removed, indicating a purge valve that isn't working at all or stuck closed.
To cause a P0443, there has to be a problem with the purge control CIRCUIT, not necessarily the valve. Usually they are a unit housing the valve and the solenoid as an assembly. Or it could be comprised of a separate solenoid with vacuum lines to a purge valve. That said, it could be any of the following:
1. Using a scan tool, command the purge solenoid to activate. Listen or feel for a clicking coming from the purge solenoid. It should click once, or on some models it may click repeatedly.
2. If it doesn't click with scan tool activation, unplug the connector and examing the solenoid and connector for damage, water, etc. Then check for battery voltage on the feed wire with the key on. If you have battery voltage, then ground the control side manually using a jumper wire and see if the valve clicks. If it does, then you know the solenoid is working properly but there is a problem with the control circuit. If it doesn't click when you manually ground it, replace the purge solenoid.
3. To check for a problem on the control circuit (if the solenoid tests okay and you have voltage to the solenoid) plug the solenoid back in and remove the control circuit (ground) wire from the ECM connector (If you're unsure how to do this, do not attempt). With the ground wire removed from the ECM, turn the key on and then manually ground the Purge valve control wire. The solenoid should click. If it does, then you know there is no problem with the control wire to the solenoid and there is a problem with the ECM purge solenoid driver circuit in the ECM. You'll need a new ECM. However if it doesn't click, then there must be an open in the wiring between the ECM and and the solenoid. You must find it and repair it.
Mar 02, 2011 | Ford Escape Cars & Trucks
Jan 21, 2011 | 2002 Pontiac Grand Prix
Apr 09, 2010 | 2000 Mazda 626
Dec 10, 2009 | 1997 Ford F150 Regular Cab
Jul 15, 2009 | 2003 Ford Ranger Regular Cab
Jul 10, 2009 | 1996 Ford Explorer
Jun 10, 2009 | 2003 Chevrolet Silverado 1500
345 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: