Your Abarth 124 engine control system detects a problem, the computer stores the diagnostic trouble
code B1D5B in its memory.
To figure out what is wrong with your vehicle you must first extract the B1D5B DTC For Abarth 124.
To solve B1D5B Abarth 124 problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs
B1D5B Abarth 124 DTC Meaning
Body Code - Problem is antilock brake system, electronic suspension and steering systems.
MFG - Manufacturer Specific
BBV Sensor Circuit Low Voltage
TFP Valve Position Switch-Drive Without Drive Ratio
While fuel economy was increased, acceleration was seriously compromised, and the loss of engine vacuum led to a dangerous loss of braking assist when the B1D5B Abarth 124 code system was in four-cylinder mode. In addition to these issues, while the company proposed a hydraulically controlled system that could be switched from within the car, the version they implemented had to be manually changed in the engine compartment using hand tools.