2003 e320 code - MBWorld.org Forums

Feb 25, 2013 | 01:25 PM

bigbudha

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Joined: Mar 2012

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04 e320 sport

2003 e320 code

hi i have 2003 e320 with 69k mile check engine came on and i checked the code.
p0123 p0442 any help will be great.

Feb 25, 2013 | 04:41 PM

bigbudha

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Junior Member

Joined: Mar 2012

Posts: 62

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04 e320 sport

Pultoe,
thanks my vin#wdbuf65j23a153156.
i checked the gas cap the plastic string that holds the cap was trapped between the cap and the tank.

Feb 25, 2013 | 10:18 PM

ozusa

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Joined: Jan 2012

Posts: 244

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From: PA, USA

2004 E320 4matic Sedan

P0123

Quote:

Originally Posted by bigbudha

hi i have 2003 e320 with 69k mile check engine came on and i checked the code.
p0123 p0442 any help will be great.

P0123 is a generic code: Throttle position or pedal position sensor/switch circuit, high input.

Now what does that actually mean? It may mean you have a bad throttle position sensor (and it may not). If your code reader is more than just a simple reader, it may be able to show you the behavior of the TP. The thing to look for is a steady transition (%) in the TP as you press the throttle through its range with the engine running. Not a jerky change in the %. A smooth press of your foot should result in a smooth change in %.

As for symptoms, you could get transmission or other issues with a bad TP sensor. If you have no symptoms of that, perhaps you could clear the code and see if it returns.

Feb 26, 2013 | 03:57 AM

bigbudha

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Joined: Mar 2012

Posts: 62

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04 e320 sport

thanks ozusa

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