Question about 2005 Mitsubishi Outlander
P0442 EVAP Control system, Small Leak Detected, check gas cap, is it tight? if so replace it, if code comes back u will need to have the system tested with special equip only the dealer has.
Posted on Jan 13, 2009
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Posted on Jan 02, 2017
The p0442 is a moderate leak in the EVAP control system and p0455 is a large leak in the EVAP control system. First thing is to ensure that your filler cap is on tight and that the seal is effective. Next is to check the tubing of the EVAP system for any holes or disconnections. The P1404 is the valve in your EGR (exhaust gas recirculation) is staying closed. It could also be that the EGR piping is clogged up with soot (baked carbon deposits). Similarly the p0404 is an EGR related error code. Your vehicle is quite new and it would be unusual for the EGR to pack up or require cleaning out so early in its life. I would make sure that the connector pins in the connection socket to the EGR are clean and bright and that there no breaks in the wiring back to the power control module. If no joy then remove the EGR and examine the freedom of movement of the valve. If gummed up spray liberally with carburettor cleaner spray and leave to stand for at least ten minutes before wiping away the crud. Repeat until the valve looks like new and reinstall. After four or five restarts without fault the error code should clear.
Posted on Jan 14, 2011
SOURCE: evap code po 442
There are two 02 sensors on yor exhast system. One before the muffler and another after the cat converter. The one one after the cat conv is the one that trips the lamp. The converter is either failing or your emmissions are excessive and the converter can't burn them off. If you feel the cap and vapor recovery is associated with your problem, It is possible if the vapr recovery solenoid is dumping to much into the engine. So, Have the vapor valve chk'd then go for the #2 02 sensor if it doesn't clear the light. Good Luck _Ned_
Posted on Nov 01, 2009
Evaporative Emission Control System Leak Detected (medium leak)
A 0.040 leak has been detected in the evaporative system. (A faulty gas cap may cause this code). Also see TSB 25-001-02A. Note: The respective Powertrain Diagnostic Procedures Manual will direct the technician to determine if the vehicle evaporative system has an external system leak. Examples of some external system leaks are: a loose gas cap, a disconnected evaporative system hose, or a loose hose connection. Remember that the evaporative system may also have an internal system leak. This internal leak may be caused by an intermittent or permanently stuck open Duty Cycle Purge (DCP) valve. This leak source is considered to be internal because any escaping emissions enter into the engine system and not directly into the atmosphere, unlike an external leak. An internal leak may cause one of the above DTC?s. Possible causes of a stuck open (intermittent or permanent) DCP valve are: 1. Corrosion due to system moisture or possible water intrusion into the system
Posted on Jan 20, 2011
SOURCE: po 442 po 455
P0442 - Evaporative Emissions System Leak Detected (Small Leak)
P0455 - Evaporative Emissions System Leak Detected (Gross Leak)
This diagnosis detects leaks in the EVAP purge line using engine intake manifold vacuum. If pressure does not increase, the ECM will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition. The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed.
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve
- Leak is in line between intake manifold
- Re-tighten or replace fuel tank filler cap
- Replace damaged or leaking EVAP canister
- Replace damaged or leaking lines.
Posted on Feb 10, 2011
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