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:
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Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.
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Enable criteria:
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General condition for this diagnostic trouble code: Atmospheric pressure must exceed 72 kPa as well as coolant and intake air temperature must exceed -7°C.
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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.
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Fault criteria:
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Engine speed more than 100 rpm lower than the requested idling speed for 10 sec.
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Dependents:
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P0501, P0502, P1230, P1530, P1531 and P1532.
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System reaction to a fault:
OK report:
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Diagnosis performed once and fault criteria not fulfilled.
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Fault handling:
(For more information, see
.)
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:
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Diagnostic status for the diagnosis.
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Idle speed control, unit ON/OFF.
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Idling speed difference, unit rpm.
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For information, see
.
