P0506

Test 1 - 2:

Test 3 - 4:

SYMPTOM
P0506-IDLE SPEED PERFORMANCE LOWER THAN EXCEPTED

WHEN MONITORED
With the engine running at idle, MAF <250 mg/tdc, air temp >-17.8 °C (0 °F) and <-7 °C (19.4 °F) enable after coolant temp >70 °C (158 °F) or air temp >-7 °C (19.4 °F), coolant temp >-7 °C (19.4 °F) <130 °C (266 °F), canister purge <100% duty cycle, and no VSS, MAF/MAP, ECT, TPS, ETC, CRK Sensor DTCs nor any fuel system or injector DTCs.

SET CONDITION
Engine speed is 100 rpm or more below idle speed for 7 seconds. Two Trip Fault. Three good trips to turn off the MIL.

POSSIBLE CAUSES
- Good trip equal to zero
- Air induction system
- IAC operation
- PCM