Car will not rev passed 3000RPM code P010C38 MAF short to ground help.
#1
MBWorld Fanatic!
Thread Starter
Car will not rev passed 3000RPM code P010C38 MAF short to ground help.
Hi All
I have a friends E Class Cab A207 I am trying to help him with an issue on that he has low power and the car will not rev passed 3000 rpm so feels sluggish.
I have used three different diagnostic tools, Launch, iCarsoft and Maxicom and they all provide the same errors which is good, these are:
Autel Maxicom 808 errors:
P246364 - Soot content of the DPF is not OK, there is an implausible signal.
P246385 - Soot content of the DPF is not OK, there is a signal above the permissible limit value.
P010C38 - MAF sensor 2 has a short circuit to ground. There is an incorrect signal frequency.
Launch errors:
Same numbers as above
iCarsoft:
Same numbers but on the MAF it states sensor B instead of sensor 2 (so still seems correct)
My thoughts are that the DPF and MAF faults are unrelated and merely coincidental. The car has been taken for a long drive with high revs to try and clean the DPF.
In regards to the MAF can someone tell me which MAF sensor looking at the engine is sensor 2 or B (i.e. left or right)
I have tried to clean the MAF with some contact cleaner but no joy, which you think that a new MAF should fox the issue P010C38 ?
If I clear the faults they come straight back.
Many thanks in advance.
I have a friends E Class Cab A207 I am trying to help him with an issue on that he has low power and the car will not rev passed 3000 rpm so feels sluggish.
I have used three different diagnostic tools, Launch, iCarsoft and Maxicom and they all provide the same errors which is good, these are:
Autel Maxicom 808 errors:
P246364 - Soot content of the DPF is not OK, there is an implausible signal.
P246385 - Soot content of the DPF is not OK, there is a signal above the permissible limit value.
P010C38 - MAF sensor 2 has a short circuit to ground. There is an incorrect signal frequency.
Launch errors:
Same numbers as above
iCarsoft:
Same numbers but on the MAF it states sensor B instead of sensor 2 (so still seems correct)
My thoughts are that the DPF and MAF faults are unrelated and merely coincidental. The car has been taken for a long drive with high revs to try and clean the DPF.
In regards to the MAF can someone tell me which MAF sensor looking at the engine is sensor 2 or B (i.e. left or right)
I have tried to clean the MAF with some contact cleaner but no joy, which you think that a new MAF should fox the issue P010C38 ?
If I clear the faults they come straight back.
Many thanks in advance.
Last edited by A1EK; 06-15-2024 at 02:09 PM.
#2
MBWorld Fanatic!
Join Date: Apr 2019
Location: Silicon Valley
Posts: 6,059
Received 3,734 Likes
on
2,484 Posts
MY'14 W212 M276 3.5NA @60kMi
Do you think you can read your sensor using a scanner?
It seems it is missing power. Likely a regulated 5V or internally controlled from a 12V input AND a clean GND as always.
That could be shorted out by another sensor sharing power.
So double-check that now or skip fwd... a new MAF does sound appealing.
Happy troubleshooting.
It seems it is missing power. Likely a regulated 5V or internally controlled from a 12V input AND a clean GND as always.
That could be shorted out by another sensor sharing power.
So double-check that now or skip fwd... a new MAF does sound appealing.
Happy troubleshooting.
Last edited by CaliBenzDriver; 06-16-2024 at 02:39 PM.
#3
MBWorld Fanatic!
Thread Starter
If I try to swap the plugs around to see if the fault moves with the plug then I will know its the MAF not the wiring.
#4
MBWorld Fanatic!
Join Date: Apr 2019
Location: Silicon Valley
Posts: 6,059
Received 3,734 Likes
on
2,484 Posts
MY'14 W212 M276 3.5NA @60kMi
#5
MBWorld Fanatic!
Thread Starter
#6
Super Member
Not sure what year, but when I had MAF sensors I'd use brake cleaner on them. Mainly I'm posting because I remember how expensive the MAF was. The dealer wanted like $500 and elsewhere was like $200? Then I saw the same sensor at a friends VW shop for $20. So I bought one just to see and it was in fact the same MFing sensor and worked fine. Same mfg too, which I forget now. So I kept it in the trunk as a spare, and troubleshooting tool. Fyi.
PS; nice lookin car you got there A1. Scotland ay? Ever heard of Rose Castle? 1/4 of my blood comes from that place.
PS; nice lookin car you got there A1. Scotland ay? Ever heard of Rose Castle? 1/4 of my blood comes from that place.
The following users liked this post:
hotbaws (07-02-2024)
#7
Junior Member
Not sure what year, but when I had MAF sensors I'd use brake cleaner on them. Mainly I'm posting because I remember how expensive the MAF was. The dealer wanted like $500 and elsewhere was like $200? Then I saw the same sensor at a friends VW shop for $20. So I bought one just to see and it was in fact the same MFing sensor and worked fine. Same mfg too, which I forget now. So I kept it in the trunk as a spare, and troubleshooting tool. Fyi.
PS; nice lookin car you got there A1. Scotland ay? Ever heard of Rose Castle? 1/4 of my blood comes from that place.
PS; nice lookin car you got there A1. Scotland ay? Ever heard of Rose Castle? 1/4 of my blood comes from that place.
It's a 2015
That's some difference in price for the MAF sensors, hopefully similar for this model
Trending Topics
#8
MBWorld Fanatic!
Thread Starter
so I bought a replacement MAF, buying the whole plastic pair for both sides, but the diagnostic now said MAF malfunction if I clear the fault it comes back. However the old housing said fault open circuit on sensor 2. It would suggest that the new MAF is not compatible somehow,? it is an aftermarket new product that has the correct part number.
I had checked the wiring to the problem sensor 2 plug and checked the connections that look good.
I cleaned the old MAF with contact cleaner and the car started to work for 30mins, I could rev passed 3000rpm again and the gears changed correctly, but then the fault returned.
My next step is to buy a genuine BOSCH MAF on the one side and try.
I had checked the wiring to the problem sensor 2 plug and checked the connections that look good.
I cleaned the old MAF with contact cleaner and the car started to work for 30mins, I could rev passed 3000rpm again and the gears changed correctly, but then the fault returned.
My next step is to buy a genuine BOSCH MAF on the one side and try.