P1101 Error code
Thread Starter
Newbie
Joined: Jan 2008
Posts: 6
Likes: 0
W164 ML 320
P1101 Error code
Hi,
A local garage tested my car on STAR and it came up with an error indicating that the left MAF was faulty.
I since bought an ODB tool and tested myself - I am getting P1101 error code, which also appears to relate to the MAF.
Now - here is the question - I went to Mercedes and bought a new MAF : part number is A6420908237 (this has 2 MAF probes in it so it replaces both left and right).
I reset the error codes, fitted the MAF, and reset the codes again, but the P1101 error code is still coming up. It happens just by switching the key to ignition position 2 : you dont need to even start the engine.
It suggests P1101 is NOT a MAF error after all since this brand new unit is behaving the same as my old one.
Can anyone suggest anything else I should check?
Thanks
Nathan
A local garage tested my car on STAR and it came up with an error indicating that the left MAF was faulty.
I since bought an ODB tool and tested myself - I am getting P1101 error code, which also appears to relate to the MAF.
Now - here is the question - I went to Mercedes and bought a new MAF : part number is A6420908237 (this has 2 MAF probes in it so it replaces both left and right).
I reset the error codes, fitted the MAF, and reset the codes again, but the P1101 error code is still coming up. It happens just by switching the key to ignition position 2 : you dont need to even start the engine.
It suggests P1101 is NOT a MAF error after all since this brand new unit is behaving the same as my old one.
Can anyone suggest anything else I should check?
Thanks
Nathan
Senior Member
Joined: Nov 2007
Posts: 313
Likes: 2
From: Toronto, Canada
2005 E320 CDI (sold); 2007 R320 CDI (sold); 2008 ML320 CDI; 2014 ML350 Bluetec
Hi,
A local garage tested my car on STAR and it came up with an error indicating that the left MAF was faulty.
I since bought an ODB tool and tested myself - I am getting P1101 error code, which also appears to relate to the MAF.
Now - here is the question - I went to Mercedes and bought a new MAF : part number is A6420908237 (this has 2 MAF probes in it so it replaces both left and right).
I reset the error codes, fitted the MAF, and reset the codes again, but the P1101 error code is still coming up. It happens just by switching the key to ignition position 2 : you dont need to even start the engine.
It suggests P1101 is NOT a MAF error after all since this brand new unit is behaving the same as my old one.
Can anyone suggest anything else I should check?
Thanks
Nathan
A local garage tested my car on STAR and it came up with an error indicating that the left MAF was faulty.
I since bought an ODB tool and tested myself - I am getting P1101 error code, which also appears to relate to the MAF.
Now - here is the question - I went to Mercedes and bought a new MAF : part number is A6420908237 (this has 2 MAF probes in it so it replaces both left and right).
I reset the error codes, fitted the MAF, and reset the codes again, but the P1101 error code is still coming up. It happens just by switching the key to ignition position 2 : you dont need to even start the engine.
It suggests P1101 is NOT a MAF error after all since this brand new unit is behaving the same as my old one.
Can anyone suggest anything else I should check?
Thanks
Nathan
