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C320 CDi Maf/Egr fault

Muuurcedes

New Member
Joined
Mar 15, 2023
Messages
12
Location
Coventry
Car
W204
Hello.

I keep getting the following codes

"The signal voltage of component B2/6b1 is too high" and " the negative deviation of exhaust gas recirculation is too high"

I cannot clear the signal voltage fault, I have replaced both maf sensors with Bosch ones. This code doesn't put my car in limp mode, however the EGR code which comes on after about 60 minutes of driving does put my car in limp mode, I can restart the car/clear the code and it's fine for an hour or two.

I have replaced the EGR twice.

Is the maf fault causing the egr fault? Any help would be appreciated, Its driving me mad
 

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