DTC P0506: Notes

DTC P0506 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0506	IAC system RPM lower than expected
DETECTION CONDITION	This DTC is set when the PCM detects an engine idle speed that is less than the desired engine speed.
POSSIBLE CAUSE	Engine mechanical concern Intake air restriction Exhaust restriction Sludged throttle body Vacuum leakage Throttle body malfunction PCM malfunction