I have a check engine light on and can't get rid of it. Its P0443 and P0452 I have changed the Purge solenoid but still check comes right back on within like 5 mintues. Can anyone suggest another option?

 

Have you checked the hoses on the EVAP canister?? I had those codes pop up & wouldn't clear, turned out the fitting had broken off the canister..

 

Where is EVAP Canister ?

 

It'll be the oval shaped plastic canister on the drivers side, under the truck. Between the back door & the fuel door.

 

A lot of us have had same issue. A true pain in the ***. Just to be sure, do as posters above state which is check for decaying or roting hoses. If they look good try what worked for me and replace the purge solenoid which is the white cap on the charcoal canister under truck.

 

Tx,

I agree with mbasaball3. Had to do the same thing on my 07 when I had it.

 

I have looked at all the hoses and they all seem to be ok... I have changed the Canister Purge Solenoid and still have the light.

 

Tx,

Only other thing I could find was a TSB related to canister but it indicates a different error code. Will post it anyway just in case. See below.

NUMBER: 25-003-07
GROUP: Emissions
DATE: November 14, 2007

SUBJECT:
DTC P0456 - Evaporative System Small Leak Due To Loose Charcoal From Canister
OVERVIEW:
This bulletin involves performing the diagnostic procedure for DTC P0456, and if
necessary, the replacement of evaporative system components.
MODELS:
2007 (DR/DH/D1/DC) Ram Truck (1500/2500/3500)
2007 (HB/HG) Durango/Aspen
2007 (WK) Grand Cherokee
2007 (XK) Commander
NOTE: This bulletin applies to vehicle built on or between January 26, 2007 and
June 18, 2007 (MDH 0126XX to MDH 0618XX respectively).
SYMPTOM/CONDITION:
The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Additional
investigation may reveal that the MIL is due to Diagnostic Trouble Code (DTC) P0456 -
Evaporative System Small Leak.
DIAGNOSIS:
1. Was vehicle built (check vehicle build date) on or between January 26, 2007
(MDH 0126XX) and June 18, 2007 (MDH 0618XX)?
a. If YES >>> then proceed to the next step.
b. If NO >>> then STOP. This bulletin does not apply. Further diagnosis is required.
2. Using a Scan Tool (StarSCAN®) with the appropriate Diagnostic Procedures available
in TechCONNECT > Service Info tab > 9 - Engine - Electrical Diagnosis > Diagnosis
and Testing, verify all engine systems are functioning as designed. If DTC's other than
those listed above are present record them on the repair order and repair as
necessary before proceeding further with this bulletin.
3. Perform the complete Diagnostic Procedures for DTC P0456 - Evaporative
System Small Leak.
NOTE: Make sure that the flow and smoke tests are performed completely.

4. Was an evaporative system leak detected when a complete DTC P0456 Diagnostic
Procedure was performed.
a. If YES >>> then proceed to the next step.
b. If NO >>> then perform the Repair Procedure.
5. Was the root cause of the leak in the evaporative system a leaking Evaporative
System Integrity Module (ESIM)?
a. If YES >>> then perform the Repair Procedure.
b. If NO >>> then STOP. This bulletin does not apply. Further diagnosis and/or repair
is required.
PARTS REQUIRED:
Qty. Part No. Description
IF HB/HG - DURANGO / ASPEN
1 52113549AE Canister, Fuel Vapor (includes: Seal and ESIM)
1 52855832AB Hose and Filter, Evap Fresh Air
IF WK/XK - GRAND CHEROKEE / COMMANDER
1 04891725AC Canister, Fuel Vapor (includes: Seal and ESIM) - All
1 52090315AI Assembly, Filler Hose (includes Evap Fresh Air Hose
and Filter) - WK
1 52090241AD Assembly, Filler Hose (includes Evap Fresh Air Hose
and Filter) - XK
IF DR - Ram Truck (1500) w/26 GALLON FUEL
TANK
1 55398669AB Canister, Fuel Vapor (includes: Seal and ESIM)
1 55398232AA Hose, Evap Fresh Air
1 04891994AA Filter, Evap Fresh Air
IF DR - RAM TRUCK (1500) w/34 or 35 GALLON
FUEL TANK
1 04891723AB Canister, Fuel Vapor (includes: Seal and ESIM)
1 55398159AA Hose, Evap Fresh Air
1 04891994AA Filter, Evap Fresh Air
IF DH/D1/DC - 2500 or 3500
1 04891726AB

 

I have changed Purge Solenoid ( under hood near battery box ) and little white box on charcoal canister and 2 mins driving light comes back on with same code..... I am lost don't know where to go from here.

 

Gas cap!