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P2123 Code

Crustyclam

Active Member
Joined
Jun 3, 2016
Messages
157
Location
Warrington
Car
ML63 2007
Hi,

Yesterday for 1st time I got engine management light come on after 5 mins of driving. Very slow acceleration in response to pedal movement. Came straight back home and ordered obd2 tester from amazon, arrived today.

The light has now gone out now, it wouldn't clear yesterday, or first thing this morning

Code coming up is P2123...Throttle/Pedal position sensor/ switch D circuit High.

When I googled this code some refer it to injector problems.

Can anyone shed any light on this code for me..and tips or suggestions to check anything.

I have it booked in at merc garage, but can't be seen till Thursday this week.

Cheers

Lee
 

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