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P0509 Diagnostic Trouble Code Discussion for October 2012

Idle Air Control Motor Sense Circuit High


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Trouble Ticket Help Requests for DTC P0509
Help Request Posted
2001 Saturn SC2 1.9L Poor Idle Quality, Stall, MIL Lamp on VIN: 1G8ZY12761
P0509: IAC Valve Circuit High Input. This is a frustrating one. A few weeks ago the customer asked me to come to his house to get his car started. He had changed the EGR valve, EVAP purge valve, and Coolant Temp. Sensor. I cleaned the fouled plugs and got it started. It still didn't idle, but he ...
October 04, 2012
2001 Saturn SC2 1.9L Poor Idle Quality, Stall, MIL Lamp on VIN: 1G8ZY12761
P0509: IAC Valve Circuit High Input. This is a frustrating one. A few weeks ago the customer asked me to come to his house to get his car started. He had changed the EGR valve, EVAP purge valve, and Coolant Temp. Sensor. I cleaned the fouled plugs and got it started. It still didn't idle, but he ...
October 04, 2012