P0506
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE.
Slow idling speed.
Idle Speed Control. Idling Speed too Low.
Fault symptoms
On-Board Diagnostics
Type of diagnosis:
|
-
|
Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.
|
Enable criteria:
|
-
|
General conditions for this trouble code: Atmospheric pressure must exceed 72 kPa and the engine coolant and intake air temperatures must exceed -7°C.
|
|
-
|
Engine running. Car stationary. Accelerator pedal fully released. Engine load lower than 225 mg/c. Idle speed control requesting greatest possible air mass per combustion.
|
Fault criteria:
|
-
|
Engine speed is more than 100 rpm lower than the requested idling speed for 10 s.
|
Dependents:
|
-
|
P0501, P0502, P1230, P1530, P1531, P1532 and P1925.
|
System reaction to a fault:
OK report:
|
-
|
Diagnosis performed once and fault criteria not fulfilled.
|
Fault handling:
(See section
Fault handling III, other emission-related components and functions
for more information.)
Diagnostic help
If other codes have been generated, check whether fault diagnosis should start with any of them. Then, check whether the throttle is in limp-home mode.
Functions in the diagnostic tool related to the fault:
|
•
|
Diagnostic status for the diagnosis.
|
|
•
|
Idle speed control, unit ON/OFF.
|
|
•
|
Idling speed difference, unit rpm.
|
See also the description of readings under
Menu "Read Values"
for more information.
