MULTEC Central Fuel Injection (12 NZ, C 12 NZ, C 14 NZ) F2:TROUBLE CODE TABLE
Trouble
| Code |
Information Sensor
| Cause of Fault | Remedy in |
F0:DATA LIST
| No. | |
|---|---|
| Trouble Code Storage when ... | |
| Remarks | |
| 45 | RICH EXHAUST |
| 8, 9, 10, 11 | |
| · Engine running |
· Coolant temperature higher than 20 °C/68 °F
· Following trouble codes not stored: 33, 34
· Only for control units up to Model Year 91: C 14 NZ The fault is recognized by the control unit if the oxygen sensor voltage is greater than 750 mV for longer than 45 s.
· Only for control units as of Model Year 92: C 12 NZ, C 14 NZ
The fault is recognized by the control unit if the oxygen sensor voltage is greater than 750 mV for longer than 90 s.
If trouble code 13 was recognized, the control unit takes 450 mV as replacement voltage (oxygen sensor control switched off).
Note:
If the oxygen sensor is wrapped in aluminium foil, remove the foil. Then delete trouble code. If trouble code 45 is set again, start trouble-shooting.