EPC FAULT ON A MERCEDES S320 CD1 (2003)

Electronic power control. This light comes on to inform you the computer has detected a problem with one or more of the sensors/circuits it monitors. You will need to have the codes scanned to determine where the fault may be and diagnose from there

Hi there, I'm guessing your vehicle is a VW or Skoda, Seat etc. The EPC light displays when there is an Electronic Power Control fault, these can be caused by many different component faults. It really needs to be plugged in to a diagnostic reading tool to identify the fault code that will have flagged up.

There can be an array of problems that can illuminate the EPC lamp on S-Class 220. A few of the most common faults with these are : HFM sensor, turbo or blocked cats. the best way to check the cats are the remove them and tap them on the ground and if dust falls out then the cats are damaged, if OK, you may have to plug into a diagnostic machine.

Hello
The engine and automatic transmission in this vehicles drive train are fully electronically controlled by a computer called the PCM and TCM (Power Train Control Module, Transmission Control Module). When a problem like this or other drive-ability related problems occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM

Hello
The engine and automatic transmission in this vehicles drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM

Hello
The engine and transmission in this cars drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPEDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM

Hi there:EPC - Electronic Power Control

If its like some other models is doesnt have a traditional accelerator, its drive by wire. Possibly pumping the pedal as you try to start is causing that. First off check for air getting into the fuel line.

Hope this helps.

Just double check that you havent blown a fuse/or fuses, it may be that simple!

I have the same problem on a s320 cdi, gearbox goes into limp mode and wont rev above or kickdown, at the 1st chance i get to stop i put into park or neutral gear turn off the engine and re-start and then everthing is fine, I read that if you put a new battery on it may solve the problem, it's something to do with the voltage dropping below 10.4 volts. Then it sends a message to e.c.u. that puts your gearbox into limp mode. Hope this will work for you. MERKY

i have same problem on 1997 s420, don't know why it is happening. but you can replace cigar lighter fuse then replace seat/mirrors/steering wheel fuse and all is well. thnx