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Infamous P06DA00 code - oil pump valve - with CEL - Indy said, “don’t worry about it”
My wife has a 2020 GLE350 with around 55K miles on it.
The check engine light came on a couple of weeks ago. I scanned and the only code showing was the notorious P06DA00 oil pump control valve and wiring harness one.
A couple of days later, check engine light turned off by itself.
A week later, CEL came back on.
Took it to our indy mechanic shop and they said, “it’ll be a $3K fix, we cleared the code, keep driving it and don’t worry about it.”
So we did!
Unfortunately, the check engine light came back on and has remained.
No noticeable drivability issues.
I’ve read that the code shouldn’t cause a CEL, and if it does, it’s a problem.. but not sure what to believe.
I can’t find clarity - can the code be ignored when a check engine light is present, if no drivability issues are present?
Last edited by Go Dawgs; Apr 12, 2025 at 12:31 PM.
My wife has a 2020 GLE350 with around 55K miles on it.
The check engine light came on a couple of weeks ago. I scanned and the only code showing was the notorious P06DA00 oil pump control valve and wiring harness one.
A couple of days later, check engine light turned off by itself.
A week later, CEL came back on.
Took it to our indy mechanic shop and they said, “it’ll be a $3K fix, we cleared the code, keep driving it and don’t worry about it.”
So we did!
Unfortunately, the check engine light came back on and has remained.
No noticeable drivability issues.
I’ve read that the code shouldn’t cause a CEL, and if it does, it’s a problem.. but not sure what to believe.
I can’t find clarity - can the code be ignored when a check engine light is present, if no drivability issues are present?
If your state requires regular emissions testing. The car will not pass with an active CEL.
This is a good point, in that specific case, OP should plug a dummy solenoid externally, link is also in that big thread so the CEL is off. Obviously make sure pressure is good first before doing this.
Do manual oil pressure testing, if it is good, then unplug the external harness and plug the harness to this dummy solenoid, ziptie it somewhere safe outside the engine.
That solenoid in that link will take a while to arrive to the usa though, if you are in a rush, you may buy the oem part from the dealership. Here is the part number: https://cimg8.ibsrv.net/gimg/www.mbw...fefddf925.jpeg
Keep in mind that if the wire harness has oil in it from a leaking oil solenoid, this could be a source of oil creep into your engine harness, which is a significant problem for your car.
As mentioned above, inspect the connection to this oil solenoid and see if oil has crept into the wiring harness. If so, this is fortuitous because you could disconnect this solenoid permanently, and you can attach a dummy solenoid to it and never have to deal with ongoing creep of oil into the engine wiring harness.
Last edited by PeterUbers; Apr 12, 2025 at 05:08 PM.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
2019 and newer cars will trigger the CEL in addition to throwing the P06DA00 code.
To get rid of the CEL, attach a dummy solenoid as recommended. (The "DO NOT CONNECT" tag is to alert any mechanic to not reconnect the wiring harness to the solenoid connector on the engine block.)
2019 and newer cars will trigger the CEL in addition to throwing the P06DA00 code.
To get rid of the CEL, attach a dummy solenoid as recommended. (The "DO NOT CONNECT" tag is to alert any mechanic to not reconnect the wiring harness to the solenoid connector on the engine block.)
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Originally Posted by W205C43PFL
Didn't occur to me that thing can rust
Normally it would be submerged in oil. Or at least not exposed to the elements. Plus, that's my cheapo AliExpress solenoid. I am glad I put heat shrink over the critical part.
Normally it would be submerged in oil. Or at least not exposed to the elements. Plus, that's my cheapo AliExpress solenoid. I am glad I put heat shrink over the critical part.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Originally Posted by W205C43PFL
I see. So with the oem one it might not rust?
It still might rust. I will check my other car tomorrow to see if it is rusted, as well. It doesn't bother me about the rust because the part is sacrificial anyway. Having the heat shrink on it should protect it from the elements.
It still might rust. I will check my other car tomorrow to see if it is rusted, as well. It doesn't bother me about the rust because the part is sacrificial anyway. Having the heat shrink on it should protect it from the elements.
I understand the rust is not a big deal (on this) but still interesting to see, thought it was made of aluminum.
You're most welcome : ) happy to help. Make sure to do the oil pressure testing as mentioned.
Hey, my friend!
I have a good OBD2 scanner. The scanner has live data mode and I was thinking you could view oil pressure this way. Unfortunately, I don’t think the scanner includes that data point.
What tool did you use to check oil pressure?
Thanks again.
Josh
Last edited by Go Dawgs; Apr 13, 2025 at 10:43 AM.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Originally Posted by Go Dawgs
Hey, my friend!
I have a good OBD2 scanner. The scanner has live data mode and I was thinking you could view oil pressure this way. Unfortunately, I don’t think the scanner includes that data point.
What tool did you use to check oil pressure?
Thanks again.
Josh
I think only some of the newer engines, like the M256 3.0 in-line 6, have oil pressure sensors. Previous engines do not. There is an oil pressure test port that requires a mechanical gauge be connected. I could try to look up the procedure for your car if you post your VIN or just give the full model designation, e.g., 167.XXX.
I think only some of the newer engines, like the M256 3.0 in-line 6, have oil pressure sensors. Previous engines do not. There is an oil pressure test port that requires a mechanical gauge be connected. I could try to look up the procedure for your car if you post your VIN or just give the full model designation, e.g., 167.XXX.
I have a good OBD2 scanner. The scanner has live data mode and I was thinking you could view oil pressure this way. Unfortunately, I don’t think the scanner includes that data point.
What tool did you use to check oil pressure?
Thanks again.
Josh
Hello : ), forum member JettaRed replied with instructions to test it, enjoy the car : )
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