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© 1-3 UPEC fault codes UPEC DAVIE XD diagnostics manual 2 31-2 Short circuit to earth or interruption in the pump - Engine running on 5 cylinders - Reduced engine output Short circuit to earth on pump unit connections, - Engine stalls and/or engine starts but does Short circuit to supply of the pump unit (B131) on - Engine stalls and/or engine starts but does Interruption in the pump unit (B131) on pin A24 of - Engine running on 3 cylinders - Engine does not supply power 31-4 The valve inside the pump unit (B131) does not jammed valve - internal contamination - internal wear - Engine running on 5 cylinders - Reduced engine output The valve inside the pump unit (B131) does not internal contamination - internal wear - Reduced engine output 31-8 The valve inside the pump unit (B131) does not mechanical problems - internal contamination - No noticeable system limitation in UPEC 32-1 Short circuit to supply on pump unit connections, - Engine stalls and/or engine starts but does 32-2 Short circuit to earth or interruption in the pump - Engine running on 5 cylinders - Reduced engine output Short circuit to earth on pump unit connections, - Engine stalls and/or engine starts but does Short circuit to supply of the pump unit (B135) on - Engine stalls and/or engine starts but does Interruption in the pump unit (B135) on pin A25 of - Engine running on 3 cylinders - Engine does not supply power 32-4 The valve inside the pump unit (B135) does not jammed valve - internal contamination - internal wear - Engine running on 5 cylinders - Reduced engine output The valve inside the pump unit (B135) does not internal contamination - internal wear - Reduced engine output 32-8 The valve inside the pump unit (B135) does not mechanical problems - internal contamination - No noticeable system limitation in UPEC Fault code Fault code description with possible cause Symptom |