P06DA00 Code, M276 Engine, Need Clarification
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
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From: Norway
2015 W205 S205
thank you.
How likely is it to blow the engine if i DONT take the connector out?
How likely is it to blow the engine if i DONT take the connector out?
this thread has pretty much all your answers on tap
Connector location
Connector location
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From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
If you want to run your oil 10,000 miles between changes, your risk increases.
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From: Norway
2015 W205 S205
I do change oil and oem filter at 5000 miles.
But in other words, should i disconnect the connector then… or just leave it like that.
it doesnt give me CEL or jerk, the car seem to run fine.
M274 engine, 2015 modell
But in other words, should i disconnect the connector then… or just leave it like that.
it doesnt give me CEL or jerk, the car seem to run fine.
M274 engine, 2015 modell
Last edited by Johnnyb3good; Jan 29, 2025 at 09:36 AM.
MBWorld God!
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Disconnect and leave it after pressure testing confirming it is good.
Joined: Nov 2016
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From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
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Out Of Control!!
Joined: Apr 2019
Posts: 11,963
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Upstream Lambda fault either :
the heater circuit bad or
high-mileage dirty/lazy or
CPS oil-harness contamination
Inspect and replace from a trusted part supplier.
Don't ignore this long to protect your engine.
There's a chance new sensor will fail soon as well then question thin oil consuption blow-by, cylinder bore scope...
Extreme heat is what causes solenoid nature failure... don't hang on to dirty oil because manual says you should...
Your property is under your care.
Junior Member
Joined: Aug 2019
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From: Norway
2015 W205 S205
i changed the oil just a few days ago, and the car is only driven 97.000km
ordred new O2 sensor before the cat, going to change it when it arrives.
where is the HEATER?
And what is a CPS?
ordred new O2 sensor before the cat, going to change it when it arrives.
where is the HEATER?
And what is a CPS?
No, not remotely.
Upstream Lambda fault either :
the heater circuit bad or
high-mileage dirty/lazy or
CPS oil-harness contamination
Inspect and replace from a trusted part supplier.
Don't ignore this long to protect your engine.
There's a chance new sensor will fail soon as well then question thin oil consuption blow-by, cylinder bore scope...
Extreme heat is what causes solenoid nature failure... don't hang on to dirty oil because manual says you should...
Your property is under your care.
Upstream Lambda fault either :
the heater circuit bad or
high-mileage dirty/lazy or
CPS oil-harness contamination
Inspect and replace from a trusted part supplier.
Don't ignore this long to protect your engine.
There's a chance new sensor will fail soon as well then question thin oil consuption blow-by, cylinder bore scope...
Extreme heat is what causes solenoid nature failure... don't hang on to dirty oil because manual says you should...
Your property is under your care.
Out Of Control!!
Joined: Apr 2019
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
It's tightly controlled by an ECU pulsed circuit.
100kKm/62kMi is an abnormal failure
-- CPS are cam sensors often responsible for oil in harmess. I mention this since yourvengine likely has a extreme heatsoaks that cook plastics. Inspect your CPS plugs for oiliness.
-- CPS can waste Lambda with oil ... see if oily when you inspect. If it is then dont replace it without replacing harness else 1 week later: it's bingo again.
Last edited by CaliBenzDriver; Jan 29, 2025 at 09:13 PM.
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GLS X166 (М276) 2018
Good afternoon, very useful information here, thanks to everyone involved!
I disconnected the connector in my GLS X166 (M276), connected a dummy valve to the connector, and the error disappeared. Everything is fine.
My only question: should the valve get hot? After connecting it, the car started, and the valve became very hot.
I disconnected the connector in my GLS X166 (M276), connected a dummy valve to the connector, and the error disappeared. Everything is fine.
My only question: should the valve get hot? After connecting it, the car started, and the valve became very hot.
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In the “off” position, the solenoid is disengaged at engine speed under 3500 rpm and no current is being applied. 3500 rpm is not the normal engine speed for most driving. Consider that highway cruising speeds are normally around or below 2000 rpm. What that means is that full current is being applied probably 99% of the time and the solenoid will get hot. Normally, the solenoid is installed in the oil pump and doesn’t care. Attaching it as a dummy reveals that it gets hot.
Have you read through the discussion in the AMG W212 forum sticky?
Have you read through the discussion in the AMG W212 forum sticky?
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Newbie
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GLS X166 (М276) 2018
Out Of Control!!
Joined: Apr 2019
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
cutting back current
Nobody has yet tried to defind the lower current limit of what ECU senses as an open circuit.
Chances are you can cut back the current by half for half or less of the heat output. You might be able to get by with considerably less current... 250mA based on what threshold sets a DTC.
Last edited by CaliBenzDriver; Apr 3, 2026 at 12:10 PM.
Member
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In the “off” position, the solenoid is disengaged at engine speed under 3500 rpm and no current is being applied. 3500 rpm is not the normal engine speed for most driving. Consider that highway cruising speeds are normally around or below 2000 rpm. What that means is that full current is being applied probably 99% of the time and the solenoid will get hot. Normally, the solenoid is installed in the oil pump and doesn’t care. Attaching it as a dummy reveals that it gets hot.
Have you read through the discussion in the AMG W212 forum sticky?
Have you read through the discussion in the AMG W212 forum sticky?
Out Of Control!!
Joined: Apr 2019
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
I messed up my statement and actually said things backwards. Under 3500 rpm, the solenoid is activated and normally restricts oil pressure.
There is current being applied full time until 3500 rpm is reached and the solenoid is deactivated. At idle, I imaging the solenoid would get hot.
There is current being applied full time until 3500 rpm is reached and the solenoid is deactivated. At idle, I imaging the solenoid would get hot.
- solenoid ON: lowers pump output volume
- solenoid OFF: Normal pump volume (pressure)
Stock setup runs the pistons with limited cooling under 3500R to save gas from less oil friction.
MOD-1:5W-40 allows effective spray that unfortunately is still above normal driving range.
Accumulated HEAT is always a factor without effective piston spraying. Pistons need to be more than just wet.
Last edited by CaliBenzDriver; Apr 4, 2026 at 05:15 PM.
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From: Ohio
2015 GL450
I just wanted to log on and say a huge thank you for all the info in this thread!! My 2015 GL450 has 230k miles. I just had the passenger side intake phaser and camshaft replaced along with a few other parts MB recommended while it was apart. The P06DA00 code was current. I want to verify my oil pressure before I disconnect the sensor. Where is the test port so I can check? I have the M276 TT engine.
Out Of Control!!
Joined: Apr 2019
Posts: 11,963
Likes: 6,804
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
I just wanted to log on and say a huge thank you for all the info in this thread!!
My 2015 GL450 has 230k miles. I just had the passenger side intake phaser and camshaft replaced along with a few other parts MB recommended while it was apart.
The P06DA00 code was current. I want to verify my oil pressure before I disconnect the sensor.
Where is the test port so I can check? I have the M276 TT engine.
My 2015 GL450 has 230k miles. I just had the passenger side intake phaser and camshaft replaced along with a few other parts MB recommended while it was apart.
The P06DA00 code was current. I want to verify my oil pressure before I disconnect the sensor.
Where is the test port so I can check? I have the M276 TT engine.
there is no real need to disconnect pump solenoid to stop the limited oil pressure mode.
The harness open circuit is "disconnected" inside the oil pan ($10k service job).
Your engine enabled "normal oiling" all by itself: MOD-1 as a mean of protection against extreme heat. Stay on top of all coolant leaks.
There is an oil pressure port located on the engine front below than oil filter, very close to serpentine belt. Its a flat round screw.
Some ppl buy a new oil filter cover and use the old cap to screw in a test pressure port on top of old filter cap. No issue messing with belt then.
Favorable options are to service clean oil on 5kMi. schedule and upgrade to "MB Approved" PAO oil such as MOTUL 5W-40 or better.
Last edited by CaliBenzDriver; Apr 11, 2026 at 05:46 PM.
