CEL On GL450
Thread Starter
Junior Member
Joined: Nov 2010
Posts: 28
Likes: 1
ml 500
CEL On GL450
Hello Mb Owners 
I got a GL450 a few days ago and it has a check engine light - I wanted to reset the codes and see if they came back on and I used the OBDLinx LX to clear the codes but they did not clear after I tried a few times.
Is it possible to reset the codes without disconnecting the battery?
Confirmed Diagnostic Trouble Codes
-P0410: AIR System "A" (Powertrain, Generic) - Is this the Airmatic Structsagging on the driver side?
-P0432: Catalyst 2 Efficiency Below Threshold Bank 2 (Powertrain, Generic)
-P0422: Catalyst 2 Efficiency Below Threshold Bank 1 (Powertrain, Generic)
-P0015: "B" Camshaft Position - Timing Over-Retarded Bank 1 (Powertrain, Generic) - Is there not a recall on this?
Permanent Diagnostic Trouble Codes
-none
Diagnostic information provided by OBD Auto Doctor
I got a GL450 a few days ago and it has a check engine light - I wanted to reset the codes and see if they came back on and I used the OBDLinx LX to clear the codes but they did not clear after I tried a few times.
Is it possible to reset the codes without disconnecting the battery?
Confirmed Diagnostic Trouble Codes
-P0410: AIR System "A" (Powertrain, Generic) - Is this the Airmatic Structsagging on the driver side?
-P0432: Catalyst 2 Efficiency Below Threshold Bank 2 (Powertrain, Generic)
-P0422: Catalyst 2 Efficiency Below Threshold Bank 1 (Powertrain, Generic)
-P0015: "B" Camshaft Position - Timing Over-Retarded Bank 1 (Powertrain, Generic) - Is there not a recall on this?
Permanent Diagnostic Trouble Codes
-none
Diagnostic information provided by OBD Auto Doctor
Senior Member
Joined: Aug 2014
Posts: 336
Likes: 46
gl450 530i
check the intake actuator and make sure the arm isn't broken. ...as far as the timing goes you can check and see if the timing is in spec by removing the cam adjusters and seeing if the timing marks align if not you need a new chain. and the airmatic message is most likely your sagging strut...replace it before youll need to add the compressor aswell to the fix
MBWorld Fanatic!
Joined: May 2015
Posts: 1,932
Likes: 291
From: Allentown, PA
'08 GL 320 CDI
Codes can be reset with aftermarket tools, yes. But it depends on the code and the scan tool. It might be that the codes you're getting can't be reset by your tool. Although I find it odd that it can read it, but not clear it.
Thread Starter
Junior Member
Joined: Nov 2010
Posts: 28
Likes: 1
ml 500
Update 6/13/2017
I changed driver air struct as well as rear passenger air struct and the P0410 is gone for the last 100+ miles -P0410: AIR System "A" (Powertrain, Generic)
These codes did not appear again
-P0432: Catalyst 2 Efficiency Below Threshold Bank 2 (Powertrain, Generic)
-P0422: Catalyst 2 Efficiency Below Threshold Bank 1 (Powertrain, Generic)
Also replaced one "Bosch 0232103114 Camshaft sensor" P0015 - seemed to have been gone but reappeared again yesterday. Any tips on how to locate the faulty sensor from the 4?
Looking at replacing the magnets as well
I changed driver air struct as well as rear passenger air struct and the P0410 is gone for the last 100+ miles -P0410: AIR System "A" (Powertrain, Generic)
These codes did not appear again
-P0432: Catalyst 2 Efficiency Below Threshold Bank 2 (Powertrain, Generic)
-P0422: Catalyst 2 Efficiency Below Threshold Bank 1 (Powertrain, Generic)
Also replaced one "Bosch 0232103114 Camshaft sensor" P0015 - seemed to have been gone but reappeared again yesterday. Any tips on how to locate the faulty sensor from the 4?
Looking at replacing the magnets as well
MBWorld Fanatic!
Joined: Dec 2004
Posts: 4,268
Likes: 253
before replacing cam sensors look at cam markings through the sensor holes. you might have a stretched chain. not common, but i have seen it on the gassers. if markings are aligned then you can proceed with sensors. bank 1 is where cyl 1 is which on your car is pass side (assuming left-hand steering).
however, the cat errors are worrisome as your cats might need replacement or due to engine timing (retard) problems they run too cold and cant reach light off temps.
however, the cat errors are worrisome as your cats might need replacement or due to engine timing (retard) problems they run too cold and cant reach light off temps.
Last edited by alx; Jun 13, 2017 at 11:40 AM.
