Dodge Ram 1500 4x4 5.2L Engine Code P0505: Diagnosis and Fix After IAC Valve Replacement

Model: dodge ram 1500 Fault Code: P0505 Posted: 2015-01-11 12:30

I'm experiencing DTC code P0505 on my 2001 Dodge Ram 1500 4x4 with a 5.2L engine. I replaced the Idle Air Control (IAC) valve, but the code persists. After clearing the fault codes and disconnecting the IAC wiring harness, the code disappears temporarily. When I reconnect the IAC and restart the engine, the P0505 code returns immediately. This suggests a potential issue with the IAC sensor or its electrical connection, or possibly an underlying problem in the throttle body or engine management system. What steps should I take to resolve this issue and get my vehicle ready for a drive test?