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2020 Corvette of the Year Finalist (track prepared)
C3 of Year Winner (track prepared) 2019
Cel p080d?
Anyone know what might cause a check engine light with the code P080D? I see that ties to "Skip Shift Solenoid Control Circuit High Voltage" but I am not entirely sure what that means or how important it is that I get the car serviced before my next event.
I pulled the data with HP Tuners and it happened at low throttle, low RPM, and after the light popped up I continued to run hard the rest of the day without any issue. This leads me to believe it isn't super relevant... Maybe it controls the 1st to 4th lock out at lower RPM, which I never experience anyway.
I cleared to code to see if it comes back, at which point I will certainly take it to the dealer. Just trying to determine how critical this might be to be sure I do no additional damage.
This is the data from HP Tuners regarding the DTC.
Freeze Frame: 0
DTC: P080D - Upshift / Skip Shift Solenoid Control Circuit High
Fuel System Status: 02 02
Calculated Engine Load: 14.1176470588235 %
Engine Coolant Temp: 96 °C
Short Term Fuel Trim Bank 1: -4.6875 %
Long Term Fuel Trim Bank 1: 7.03125 %
Short Term Fuel Trim Bank 2: -5.46875 %
Long Term Fuel Trim Bank 2: 5.46875 %
Fuel Pressure: 483.000503808165 kPa
Intake Manifold Absolute Pressure: 22 kPa
Engine RPM: 1646 rpm
Vehicle Speed: 26 km/h
Timing Advance: 47 °
Intake Air Temp: 29 °C
Mass Airflow: 17 g/s
Throttle Position: 22.7450980392157 %
O2 Voltage B1S1: 52.3828125 mV
O2 Voltage B1S2: 844.98046875 mV
O2 Voltage B2S1: 52.36328125 mV
O2 Voltage B2S2: 839.98046875 mV
Run Time Since Engine Start: 228 s
Fuel Rail Pressure: 8 MPa
Commanded EVAP Purge: 55.2941176470588 %
Fuel Level Input: 85.0980392156863 %
Warmups Since MIL Clear: 2
Distance Since MIL Clear: 74 km
EVAP System Vapor Pressure: 15788 kPa
Barometric Pressure: 101 kPa
Catalyst Temp B1S1: 859 °C
Catalyst Temp B2S1: 803 °C
Control Module Voltage: 14 V
Absolute Load: 16.4705882352941 %
Commanded EQ Ratio: 1
Relative Throttle Position: 12.5490196078431 %
Ambient Air Temp: 21 °C
Absolute Throttle Position B: 22.7450980392157 %
Accelerator Position D: 25.0980392156863 %
Accelerator Position E: 12.5490196078431 %
Commanded Throttle Actuator: 17.2549019607843 %
Fuel Type: 01
60: 01 08 00 00
Last edited by fleming23; May 7, 2017 at 05:34 PM.
Any chance you knocked a connector off the trans, or interrupted something underhood? Did it start at the same time as when you installed your throttle body?
Here's a pick of the trans, showing where the solenoid is. There are a number of harnesses that could be loose back here.
I would think your worst case in the event of a failure would be that it always forced you from 1st to 4th, wrecking your track day. But it'd still be driveable.
2020 Corvette of the Year Finalist (track prepared)
C3 of Year Winner (track prepared) 2019
That does appear to be the issue. Fortunately the car is sitting on the lift right now so I was able to go out and take a look. The harness is pretty crispy and feels very much ruined.
Now the question becomes....will the dealer attempt to say the aftermarket exhaust caused this, even though we all know it is in no way different than if the factory pipes were back there.
2020 Corvette of the Year Finalist (track prepared)
C3 of Year Winner (track prepared) 2019
Anyone have a harness diagram for the CAGS harness? Wanting to know what all is involved in replacing, and possibly the cost. Even though the car is under warranty, there are some things I'd rather do myself. I've had bad luck with this car and dealers in the past.
If you've changed the exhaust and the exhaust melted the connector, I think you're likely on the hook for it. For all they knew it now sits closer than the factory stuff did. Or more simply, not a lot of factory exhausts are melting that connector... So if you prefer to do it yourself, all the better!
I've got the shop manuals, but maybe someone else has a circuit diagram handy. If you're lucky there's a small section of harness you can buy and replace, perhaps because this is an M7-only connection.
2020 Corvette of the Year Finalist (track prepared)
C3 of Year Winner (track prepared) 2019
Originally Posted by DAVE396LT1
If you've changed the exhaust and the exhaust melted the connector, I think you're likely on the hook for it. For all they knew it now sits closer than the factory stuff did. Or more simply, not a lot of factory exhausts are melting that connector... So if you prefer to do it yourself, all the better!
I've got the shop manuals, but maybe someone else has a circuit diagram handy. If you're lucky there's a small section of harness you can buy and replace, perhaps because this is an M7-only connection.
Changing the exhaust to most any available axle back is the same size as the factory pipes and is predominately for sound, nothing else. That is to say, it should not play a role. Regardless, I will just want to get the car fixed.
If you have a diagram of the harness, and/or a part number, that would be helpful.
Thank you
Last edited by fleming23; May 7, 2017 at 07:49 PM.
2020 Corvette of the Year Finalist (track prepared)
C3 of Year Winner (track prepared) 2019
Looks like the transmission part number is possibly 23246519. If so, only a little more than $200, which isn't terrible all things considered. Not sure if the entire transmission has to come out, or drop down or what.
Cel p080d?
