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w203 220 CDI (2005)
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I've just had my w203 CD220 put on a generic obd11 reader.

these were the codes

P2024- check component B2/5b1 (intake air temp sensor) the signal voltage is too high

P0100- check charge air system. The air mass is too small

P1222- check component sensor in component B37(accelerator pedal sensor) The signal voltage is too high

the air mass one is probably where i disconnected it trying to see if thats what was causing my limp home mode. I did buy a new MAF including the housing.

The mil light doesn't come on when in limp mode which is now happening on a daily basis.

Any help on how to find and remedy the other 2 fault codes would be greatly appreciated.
 

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Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550, 2011 C300 FORMER: ML350, CLK550 Cabriolet, C240, ML320, 300TD
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19,447 Posts
If the MIL is not illuminated, then those errors must not be occurring anymore and are just stored. Limp mode will be due to transmission problems and won't cause an MIL. You'll need to check the TCU for codes and most generic OBDII readers won't do that. You'll need SDS or a 3rd party tool that can specifically read MBZ systems.
 

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I've just had my w203 CD220 put on a generic obd11 reader.

these were the codes

P2024- check component B2/5b1 (intake air temp sensor) the signal voltage is too high

P0100- check charge air system. The air mass is too small

P1222- check component sensor in component B37(accelerator pedal sensor) The signal voltage is too high

the air mass one is probably where i disconnected it trying to see if thats what was causing my limp home mode. I did buy a new MAF including the housing.

The mil light doesn't come on when in limp mode which is now happening on a daily basis.

Any help on how to find and remedy the other 2 fault codes would be greatly appreciated.
 

·
Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550, 2011 C300 FORMER: ML350, CLK550 Cabriolet, C240, ML320, 300TD
Joined
·
19,447 Posts
The limp mode is likely a transmission problem. A generic OBDII scanner is not going to give you those codes. YOu need a tool that can read the MBZ-specific codes from the TCU.
 
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