Intermittent rough idle and codes P2189 and P0441

Hi,

It sounds like there is an issue with a vacuum leak. The P2189 deals with the PCV. That could create a big enough leak to cause the problem.

Here are the diagnostics for checking it:

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2009 Kia Rondo V6-2.7L
Component Inspection
Vehicle ALL Diagnostic Trouble Codes ( DTC ) Testing and Inspection P Code Charts P2189 Engine Component Inspection
COMPONENT INSPECTION
Component Inspection

1. Check PCV
(1)IG "OFF" and remove PCV valve from rocker cover.
(2)Insert a thin stick into the PCV valve from the threaded side and verify that the plunger is moving.
(3)Is the PCV valve moving normally?
YES
- Go to "Check injector" as follows
NO
- Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.
2. Check injector for normal operation
(1)Start engine.
(2)Check its RPM decrease when doing the injector's actuation test.
(3)Is there any cylinder with no change in RPM or only a small change in RPM?
YES
- Clear DTC and Test-drive under enable conditions above-mentioned. After the test, If this DTC is set, go to "Inspection & Repair" procedure. If not, troubleshooting is completed.
NO
- Replace injector, and go to "Verification of Vehicle Repair" procedure.

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I attached a pic of the PCV and highlighted it.

Let me know what you find or if you have other questions.

Take care,
Joe

Sounds like a plan. If you have a chance, let me know what you find.

Take care,
Joe

Please let us know what you find. We are interested to see what it is.

Excellent. Thanks for letting us know. I feel confident this thread will be helpful to others in the future.

Please feel free to come back in the future if you have questions or need help.

Take care,
Joe

Hi,

The code deals with the canister close valve (CCV). It is near the fuel tank. I attached two pics below to help you find it. First, locate the valve and then follow these directions for diagnostics.

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2009 Kia Rondo V6-2.7L
Component Inspection
Vehicle ALL Diagnostic Trouble Codes ( DTC ) Testing and Inspection P Code Charts P0455 Engine Component Inspection
COMPONENT INSPECTION
Component Inspection

1. Check CCV for leakage
(1)Disconnect the hose leading from the CCV to Canister at CCV.
(2)Visually Check for any tear of the hose leading from the CCV to Canister
(3)When the CCV operates, apply a vacuum at the nipple and verify that the CCV holds vacuum.
(4)Does a leak exist?
YES
1) Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
1) Go to "Check Canister for leakage" as indicated below
2. Check Canister for leakage
(1)Disconnect the hose leading from the CCV to Canister at Canister.
(2)When the other nipples are plugged, apply a vacuum at the vent nipple and verify that the Canister holds vacuum.
(3)Does a leak exist?
YES
1) Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
1) Go to "Check fuel tank for leakage" as indicated below
3. Check fuel tank for leakage
(1)Check fuel tank for crack or leakage.
(2)Does a leak exist?
YES
1) Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
1) Carefully perform this troubleshooting procedures all over again from the beginning.

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Let me know what you find.

Joe