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© 1-7 UPEC fault codes UPEC DAVIE XD diagnostics manual 2 42-8 Unacceptable sine-wave signal of crankshaft missing hole in flywheel, for example due to - No noticeable system limitation in UPEC 43-1 Interruption or short circuit/short circuit to supply/ - Longer start time before engine fires 43-2 Unacceptable sine-wave signal of camshaft loose pulse plate - Longer start time before engine fires 43-4 Missing or unacceptable sine-wave signal of interruption on pin A2 and/or A14 of the ECU - short circuit to earth on pin A2 of the ECU - short circuit to supply on pin A2 of the ECU - short circuit between pins A2 and A14 of the - Longer start time before engine fires 43-8 Synchronisation signal from camshaft sensor contact resistance in connection points of - faulty camshaft sensor - mechanical damage of the pulse plate or - interruption on pin A14 of the ECU - too low a voltage level of camshaft signal - Longer start time before engine fires 44-1 Excessive engine speed caused by: downhill driving - incorrect changing down into a lower gear - No noticeable system limitation in UPEC 45-1 Signal measurement via coolant temperature interruption on pin A22 and/or A5 of the ECU - Thermometer gives no reading - ECU switches to default replacement value 45-2 Signal measurement via coolant temperature short circuit to earth on pin A22 of the ECU - short circuit between pins A22 and A5 of the - Thermometer gives no reading - ECU switches to default replacement value 45-4 No signal measurement via coolant temperature internal ECU fault - Thermometer gives no reading - ECU switches to default replacement value 46-1 Boost pressure signal measurement via inlet air short circuit to supply on pin A12 and/or A23 - Reduced engine output - ECU switches to default replacement value 46-2 Boost pressure signal measurement via inlet air interruption on pin A23 and/or A12 of the - short circuit to earth on pin A23 and/or A12 - Reduced engine output - ECU switches to default replacement value Fault code Fault code description with possible cause Symptom |