"Reduced Engine Power" with pending P06DD
Thread Starter
Intermediate
Joined: Jun 2019
Posts: 40
Likes: 4
From: Indiana
"Reduced Engine Power" with pending P06DD
Hello,
Any help would be greatly appreciated. I have a modded C7, and keep getting a reoccurring issue with a "reduced engine power" light that keeps displaying a P06DD pending code. I had the shop replace the oil pressure sensor. They also put a T on to monitor the oil pressure on an actual gauge while they were tuning and running on a dyno. Oil pressure is solid. However, I continue to get a display on my screen that shows "reduced engine power" and keeps displaying a pending code P06DD. The C.E.L. light never comes on. I don't see any difference in power, and I am constantly monitoring the oil pressure and see no issues, fluctuations, etc. I continue to clear the pending code, but it seems to reappear within 5 minutes of starting and driving again.
Any thoughts or has anyone came across this?
Thanks in advance, it is driving me nuts.
Any help would be greatly appreciated. I have a modded C7, and keep getting a reoccurring issue with a "reduced engine power" light that keeps displaying a P06DD pending code. I had the shop replace the oil pressure sensor. They also put a T on to monitor the oil pressure on an actual gauge while they were tuning and running on a dyno. Oil pressure is solid. However, I continue to get a display on my screen that shows "reduced engine power" and keeps displaying a pending code P06DD. The C.E.L. light never comes on. I don't see any difference in power, and I am constantly monitoring the oil pressure and see no issues, fluctuations, etc. I continue to clear the pending code, but it seems to reappear within 5 minutes of starting and driving again.
Any thoughts or has anyone came across this?
Thanks in advance, it is driving me nuts.
Race Director
Joined: Aug 2000
Posts: 12,975
Likes: 22
You didn't mention the year of your car, so this may not apply to you.
http://www.corvetteactioncenter.com/...sure-1280.html
http://www.corvetteactioncenter.com/...sure-1280.html
Thread Starter
Intermediate
Joined: Jun 2019
Posts: 40
Likes: 4
From: Indiana
I guess the year would have helped, thanks for the info. The year is a 2015 and it ironically just started after 200-300 miles since oil change. Never received a CEL. It is weird that I see no difference in "reduced engine power" as it states on the display. And it only happens every once in awhile.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
Not sure why everybody thinks clearing a code will work without figuring out what is wrong and fixing it. As for replacing the oil pressure sensor that was whistling in the dark as the fault isn't related to the sensor. The shop should have known better than that since they can get online info on what the codes mean.
I am paraphrasing this information from the 2015 Factory Service Manual:
The ECM runs a test to ensure the engine oil pressure control solenoid valve isn't stuck. When the solenoid is commanded OFF the oil pressure is higher when commanded ON the oil pressure is higher. DTC P06DD is set when the oil pressure is above or below a calibrated amount during the change from the ON to OFF States when the engine is operating between 1200 and 1500 rpm. The diagnostic says to use the scan tool to monitor oil pressure with engine speed held at 1200 rpm to see if the pressure changes more than 4 psi as the valve is commanded on and off. If you don't see a variation in oil pressure replace the oil pressure control solenoid valve.
Bill
I am paraphrasing this information from the 2015 Factory Service Manual:
The ECM runs a test to ensure the engine oil pressure control solenoid valve isn't stuck. When the solenoid is commanded OFF the oil pressure is higher when commanded ON the oil pressure is higher. DTC P06DD is set when the oil pressure is above or below a calibrated amount during the change from the ON to OFF States when the engine is operating between 1200 and 1500 rpm. The diagnostic says to use the scan tool to monitor oil pressure with engine speed held at 1200 rpm to see if the pressure changes more than 4 psi as the valve is commanded on and off. If you don't see a variation in oil pressure replace the oil pressure control solenoid valve.
Bill
8th Gear
Joined: Nov 2023
Posts: 8
Likes: 0
Hello,
Any help would be greatly appreciated. I have a modded C7, and keep getting a reoccurring issue with a "reduced engine power" light that keeps displaying a P06DD pending code. I had the shop replace the oil pressure sensor. They also put a T on to monitor the oil pressure on an actual gauge while they were tuning and running on a dyno. Oil pressure is solid. However, I continue to get a display on my screen that shows "reduced engine power" and keeps displaying a pending code P06DD. The C.E.L. light never comes on. I don't see any difference in power, and I am constantly monitoring the oil pressure and see no issues, fluctuations, etc. I continue to clear the pending code, but it seems to reappear within 5 minutes of starting and driving again.
Any thoughts or has anyone came across this?
Thanks in advance, it is driving me nuts.
Any help would be greatly appreciated. I have a modded C7, and keep getting a reoccurring issue with a "reduced engine power" light that keeps displaying a P06DD pending code. I had the shop replace the oil pressure sensor. They also put a T on to monitor the oil pressure on an actual gauge while they were tuning and running on a dyno. Oil pressure is solid. However, I continue to get a display on my screen that shows "reduced engine power" and keeps displaying a pending code P06DD. The C.E.L. light never comes on. I don't see any difference in power, and I am constantly monitoring the oil pressure and see no issues, fluctuations, etc. I continue to clear the pending code, but it seems to reappear within 5 minutes of starting and driving again.
Any thoughts or has anyone came across this?
Thanks in advance, it is driving me nuts.
thank you
