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Hi all!

I have a 2005 156 JTS (55,000kms) which keeps giving the MCSF message on the dash every few hundred Kms.

I have connected the car to ALFA DIAG and have been given the following fault codes:

P0354 - Failed Component Code: Coil Circuit 4
P0430 - Failed Component Code: Efficiency Catalyst Bank 2
P0420 - Failed Component Code: Efficiency Catalyst Bank 1

I have replaced coil #4 but the same fault keeps re-appearing. This is very strange and I dont want to keep spending money on parts if im not 100% sure what the problem is.

The car seems to drive just fine, but I want to get to the bottom of this!

Any assistance is GREATLY appreciated!

Thanks! :)
 
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