Diagnostic Trouble Code (DTC) Information ECM-950D: Notes

Condition

Fig 1: Identifying Atmospheric Pressure Sensor

Courtesy of VOLVO CARS CORPORATION

If Engine Control Module (ECM) registers that the actual idle rpm (actual value) is under the limit value for a certain time, the diagnostic trouble code (DTC) is generated.

Substitute Value

None.

Possible Source

Blocked intake system.
Blocked exhaust system.

Fault symptom[s]

Malfunction indicator light (MIL), on
Low idle speed
Uneven idle