2003 ram 1500 codes
- Thread starter gjayb1987
- Start date
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HeavyD
Senior Member
- Joined
- Feb 21, 2015
- Posts
- 1,162
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- Location
- Medicine Hat, Alberta - Canada
- Ram Year
- 2004
- Engine
- 4.7 SOHC 5 SP Auto
evaporated emission system leak detected
Possible faults which could have caused your Dodge to trigger trouble codes
P0442 and P0455 have to do with the EVAP system. A smog repair station will
need to trace the EVAP leak and determine where the leak is at. Maybe
something as simple as a new clamp or hose (part of the EVAP system) is all
that's needed, or the problem may be more severe requiring the EVAP canister
or purge solenoid be replaced. The first step is to find out where the leak
is at. Note also, EVAP trouble codes have been known to set with faults as
simple as a loose gas cap. If your Dodge truck's check engine light recently
illuminated, you may want to insure the gas cap is tight and drive your
Dodge for a week or two. If the EVAP code was triggered due to a loose gas
cap, the light will turn off once the computer system realizes no real EVAP
fault/s exist. If tightening the gas cap does not turn off the check engine
light after two weeks, then certainly there is a defect somewhere within the
EVAP system, and a hands on diagnosis will be required.
Possible faults which could have caused your Dodge to trigger trouble codes
P0442 and P0455 have to do with the EVAP system. A smog repair station will
need to trace the EVAP leak and determine where the leak is at. Maybe
something as simple as a new clamp or hose (part of the EVAP system) is all
that's needed, or the problem may be more severe requiring the EVAP canister
or purge solenoid be replaced. The first step is to find out where the leak
is at. Note also, EVAP trouble codes have been known to set with faults as
simple as a loose gas cap. If your Dodge truck's check engine light recently
illuminated, you may want to insure the gas cap is tight and drive your
Dodge for a week or two. If the EVAP code was triggered due to a loose gas
cap, the light will turn off once the computer system realizes no real EVAP
fault/s exist. If tightening the gas cap does not turn off the check engine
light after two weeks, then certainly there is a defect somewhere within the
EVAP system, and a hands on diagnosis will be required.
Hope you got this fixed already, but if not please see below information from AllData.
SYMPTOM
P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED
WHEN MONITORED
Immediately after a cold start, with battery/ambient temperature between 40 °F and 90 °F and coolant temperature within 10 °F of battery/ambient.
SET CONDITION
If there is a leak larger than 0.040" and smaller than 0.080" in the evaporative system.
POSSIBLE CAUSES
- Leak at Gas Cap
- Vehicle History and Service Bulletin Investigation
- Visual and Physical Inspection
- Verify Evaporative Emission Leak
- EVAP Purge Solenoid Operation
- Intermittent LDP Monitor Failure
- Evaporative Emission Leak Detection
- Gas Cap
- LDP Component Leak
If you need a list of diagnostic steps please let me know and I can send a screen shot or steps to you for this.
SYMPTOM
P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED
WHEN MONITORED
Immediately after a cold start, with battery/ambient temperature between 40 °F and 90 °F and coolant temperature within 10 °F of battery/ambient.
SET CONDITION
If there is a leak larger than 0.040" and smaller than 0.080" in the evaporative system.
POSSIBLE CAUSES
- Leak at Gas Cap
- Vehicle History and Service Bulletin Investigation
- Visual and Physical Inspection
- Verify Evaporative Emission Leak
- EVAP Purge Solenoid Operation
- Intermittent LDP Monitor Failure
- Evaporative Emission Leak Detection
- Gas Cap
- LDP Component Leak
If you need a list of diagnostic steps please let me know and I can send a screen shot or steps to you for this.
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