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Discussion Starter #1
Hi all,

Today i decided to clean my engine bay with a rag and a simple degreaser, no water.
A few hours after (3-4 approx.) my wife takes the car and the CEL lit.

So i took my cel reader and it gave me p06e4 error. There is nothing on the web for that error except it is a control module wake up (something something)

The car is fully charged, so i started it and it went directly on the ICE. Starting it twice it went on the battery as usual.
The engine light is still lit though.

I just wanted to post it here if you guys have any clue what could it be.

Im lretty sure it might be a short somewhere (bad sensor cable) or while i was cleaning the engine bay with the rag i bumped a cable or something.

I,m going to call the dealer tomorrow for an appointment, i think that code is under the electrical/charging warranty (8year).

Thanks foryour time.
 

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Discussion Starter #2
Huh, i just learned that the gas engine will start automatically when the hood is opened...cased close for that.
But i'm still puzzled why i have a p06e4 after cleaning the plastic covers today...
 

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Discussion Starter #5

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Discussion Starter #7
I re tightened the gas cap. It was already tight anyways.
I srarted the car and the cel was still there.

I will call this morning for an appointment to see whats wrong. Hopefully its a sensor related the the battery, that way it will pass under the 8year warranty lol
 

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With no water involved, I doubt you could have done much. Even with water, I doubt you could have done much. The connectors are very tight and rigid and water resistant where they need to be. I suspect the dealer will clear the code, check for any updates and tell you everything is fine. Many of us have had CEL's with many of them randomly occurring and clearing on their own. I probably have had a dozen CEL's on my 2013 Gen 1 volt, almost all of them occurring when I unplugged shortly after or during a precondition on 240V.
 

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Discussion Starter #9
With no water involved, I doubt you could have done much. Even with water, I doubt you could have done much. The connectors are very tight and rigid and water resistant where they need to be. I suspect the dealer will clear the code, check for any updates and tell you everything is fine. Many of us have had CEL's with many of them randomly occurring and clearing on their own. I probably have had a dozen CEL's on my 2013 Gen 1 volt, almost all of them occurring when I unplugged shortly after or during a precondition on 240V.
Well, i have an appointment tomorrow, l'll leave the car tonight.
The guy said it's probably a module on the HPCM2 (Hybrid/EV controller), it is safe to drive as long as the car is charging (it is)
It supposed to be under warranty (8year).

i'm pretty sure it's a glitch and they'll reset the CEL as you said.

as long as it's free of charge because i would've done it myself lol
 
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Hi Matrix21,

We came across your post and wanted to offer some insight. Please rest assured that the code you received is not critical, and we recommend driving for a week with normal operation to see if the CEL extinguishes. We see that you have an appointment with your dealership tomorrow, and we'd be happy to touch base with them to discuss this further. Feel free to send us a private message if this is of interest.

Kindly,
Lauren E.
Chevrolet Customer Care
 

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Out of the Hybrid Diagnostics Guide the P06E4 is a Control Module Wake Up Circuit performance Diagnostic. VICM wake-up events were not received. Whenever the propulsion system goes active, the diagnostic reads its internal timer and evaluates the results from the wak-up events that could have occurred. For each wake-up event, the status can be: Pass - the wake-up event occurred within a window. Indeterminate - the ECM was already awake at the time the wake-up event could have occurred. Fail - the wake-up event occurred outside a window or did not occur at all.
 

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Discussion Starter #12
So they did all test and all sensors and wires were fine. So they will replace the HPCM2 module. the piece is B/O for 5-7 days.
 

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Ask them to clear the code and let you drive it for the time till the part comes in. See if the code returns while you're driving it.
 

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Discussion Starter #16
Well, just a little update here.
the car is at the dealer since monday, they received the HPCM2 module but they are not able to reprogram it.

they ordered another module = same thing.

they called GM Canada and they sent them another module with a different part #1 = same ****.

They called me yesterday and they would need the car for a couple of days since they need help with an Eletrical Engineering from GM Canada... The advisor told me there is a good chance he would be able to come down this afternoon.

How the hell they can't reprogram it ??
Fortunatly, everything is under the Voltec warranty...but still.
 

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If they failed to reprogram FOUR different modules (the one in yours, and three replacements), I'd start looking at a failure of process rather than part. In short, R DUIN IT RONG.
 
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