I have 2005 2.5T s60. The brake and ABS light have been on for about 2 years. I tried 2 used ABS module, however, it seems it didn't work. I don't know if it has other problems or I just got two bad units? The seller claims their unit is good and have life time warranty on it. I am gonna to ask the 3rd one.

However, all of sudden, I noticed the check engine light was ON last weekend. I got lots of error code. Does anyone has experience about this ECM-434c error? Where could the problem be? any suggestion will be appreciated.

ECM-434C Fuel tank system, leakage. Minor leak


The followings are other error codes:
CEM-1A5F Communication with the brake control module.
ECM-900B Brake pedal sensor. Signal missing
CCM-0064 Air distribution damper motor. Faulty signal
CCM-0062 Left temperature damper motor. Faulty signal
CCM-DD12 Left-hand seat heater. No communication
CCM-DD30 Right-hand seat heater. No communication

 

Have you been able to figure out what the cause of you ECM-434c fuel tank system, leakage and brake pedal/pressure sensor codes where for?

 

Is yours the brake pedal position sensor? If the sensor itself is faulty, its a relatively inexpensive sensor that goes right into the brake booster. Also, ABS modules are programmed to the car, you can't just swap them out. I know that's from OP, but I wanted to provide that info.

For your fuel leakage, I would get your sniffer primed and see where you can smell gas. Inside the car or outside? Front or rear? Side? Loose fuel cap?