New Holland WorkMaster 50 Service Manual page 879

Electrical systems - FAULT CODES
DTC 237-12-Quantity balance check if a successful PRV opening
is ensured
Control Module : ECU
Context:
This fault is intended for information purposes only. Other active faults may have caused this fault to occur. The
Engine Control Unit (ECU) A-9000, monitors the fuel Pressure Relief Valve (PRV). To determine mechanical wear-out
of the PRV, the ECU A-9000 will perform a fuel pressure increase and pressure shock, thus opening the PRV. Both
steps are recorded in the ECU A-9000 failure memory.
47866583_ 02/12/2015
55.12 [55.DTC] / 158