| fault code | P1490 |
|---|---|
| after sales description of the fault code | regeneration not achieved: regeneration request too frequent |
| description of the diagnostics | number of regeneration requests in downgrade mode; (made by the ECU): more than 2 |
| conditions of activation of the diagnostics | consult the associated contexts for the Pcode forwarding conditions |
| conditions of disappearance of the fault | after a complete cycle of regeneration of the particle filter |
| down-grade modes if fault present | - |
| switching on of the warning lamp and/or warning message | - |
| main customer complaints likely | engine hesitating, cutting out |
| lack of power | |
| noise | |
| suspect areas | pneumatic meter of the turbo air cooler by-pass |
| particle filter | |
| particle filter differential pressure sensor | |
| particle filter upstream temperature sensor | |
| soft pouch of the additive reservoir | |
| additive pump | |
| additive tank | |
| anti-return valve (between the reservoir and the additive hose) | |
| electrical harness | |
| connector |
| fault code | P1490 |
|---|---|
| after sales description of the fault code | regeneration not achieved: regeneration request too frequent |
| description of the diagnostics | number of regeneration requests aborted 2 |
| the ECU changes to kilometric regenerations | |
| conditions of activation of the diagnostics | consult the associated contexts for the Pcode forwarding conditions |
| conditions of disappearance of the fault | after a complete cycle of regeneration of the particle filter |
| down-grade modes if fault present | - |
| switching on of the warning lamp and/or warning message | - |
| main customer complaints likely | engine hesitating, cutting out |
| lack of power | |
| noise | |
| suspect areas | pneumatic meter of the turbo air cooler by-pass |
| particle filter | |
| particle filter differential pressure sensor | |
| particle filter upstream temperature sensor | |
| soft pouch of the additive reservoir | |
| additive pump | |
| additive tank | |
| catalytic converter | |
| anti-return valve (between the reservoir and the additive hose) | |
| customer making very short journeys | |
| lack of additive in the reservoir | |
| electrical harness | |
| connector |
| fault code | P1490 |
|---|---|
| after sales description of the fault code | particle filter: detected overloaded |
| description of the diagnostics | particle filter overloaded |
| for a volume flow passing through the particle filter of 200000 l/h, the differential pressure is greater than 170 mbar for 10 s | |
| for a volume flow passing through the particle filter of 300 000 l/h, the differential pressure is greater than 286 mbar for 10 s (engine speed approximately 4000 revs/min) | |
| for a volume flow passing through the particle filter of 500 000 l/h, the differential pressure is greater than 500 mbar for 10 s | |
| conditions of activation of the diagnostics | volume flow rate passing through the particulate emission filter above 0,025 m3/s (90 000 l/h) |
| conditions of disappearance of the fault | driving with the engine hot for 5 minutes |
| down-grade modes if fault present | - |
| switching on of the warning lamp and/or warning message | - |
| main customer complaints likely | starting problem |
| lack of power | |
| engine hesitating, cutting out | |
| noise | |
| fluid leak / smells | |
| suspect areas | catalytic converter: wear |
| particle filter: blockage | |
| particle filter differential pressure sensor: take-off clogged; electrical harness | |
| particulate filter upstream gas temperature sensor: sensor drift; electrical harness | |
| particle filter additive: additive: incorrect: | |
| vehicle used too much for city driving | |
| additive pump: pump jammed; leak; electrical harness | |
| additive pump output hose: leak / plug | |
| anti-return valve: locked |