IMRC replaced, error codes coming back up

2005 HONDA CRV
160,000 MILES • AWD • AUTOMATIC
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M_J_C
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Hi. I had a check engine light with error code P1077. Mechanic did some trouble-shooting and we ended up replacing the IMRC runner control actuator assembly. They also did an oil/oil filter change.

After about thirty miles, I am getting P1078 now as well as the codes: 62-1 and 83-1

Brought the car back and made sure to ask him whether the valve assembly is seated right as I know these are difficult to install.

Any ideas? Could this be the IMRC solenoid? Wondering why I have two new error codes after this?
Oct 3, 2016 at 8:17 PM
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JIS001
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Where did you get codes 62-1 & 83-1? As for your other codes, verify vacuum hose is connected right. If okay remove hose "A" and while do the IMT test apply vacuum. If vacuum holds then check for clogging. The solenoid itself could be bad. Also sometimes because the solenoid clicks when commanding on does not mean it is actually working properly. Have seen it many times even with relays. You may want to remove the solenoid and manually checking it by applying vacuum and manually applying power and ground with jumper wires to see if there is any change. Do it several times since it might get stuck once in a while.
Oct 3, 2016 at 10:05 PM
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JIS001
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Forgot to add the image.
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Oct 3, 2016 at 10:06 PM
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M_J_C
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Thank you, JIS001 for your help and the diagram was helpful.

So --- I went ahead and replaced the IMT solenoid. The mechanic at my shop told me the vacuum lines were fine when he replaced the IMRC assembly. The problem is after I replaced the IMT solenoid, I'm still getting the error codes P1077 and P1078. Additionally -- the car has started to go into VSA mode while on the highway which is frustrating. I'm assuming I ought to bring it to another mechanic who can check the power/ground. Before I do that -- is there anything else you think it may be?

Very appreciative of your help. Thanks again.
Oct 28, 2016 at 1:59 PM
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JIS001
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Check for smooth movement of the linkage and the IMRC assembly in the intake manifold.

Check the IMRC valve and position sensor, the position sensor should read around 3.75 volts closed and 1.25 volts open. If the sensor does not operate correctly, the code could also set. And you stated on your earlier post. The IMCR needs to be seated properly or you will get codes to return.
Oct 28, 2016 at 2:52 PM