P0507
Medium SeverityIdle Air Control System RPM Higher Than Expected
Engine System
What Does P0507 Mean?
Idle speed is too high. Something is allowing too much air into the engine at idle.
Common Fix
Fix vacuum leak or replace IAC
Estimated Cost (DIY)
$0 - $80
Symptoms
- ⚠️High idle speed (1000+ RPM)
- ⚠️Engine races at stops
- ⚠️Difficult to slow down
Common Causes
How to Diagnose P0507
- 1Check for vacuum leaks
- 2Clean throttle body
- 3Test IAC valve
- 4Check intake manifold gaskets
OEM Diagnostic Flowchart
Scroll to load technician if/then branches.
Read live data and freeze frame for P0507 to pinpoint the cause before buying parts.
Related Resources
Repair guides, symptom pages, and wiring diagrams related to P0507.
OEM Manual Evidence
Browse →A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL Denali AWD V8-6.2L Service Manual | Operation CHARM Operation CHARM : Car...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL Denali 2WD V8-6.2L Service Manual | Operation CHARM Operation CHARM : Car...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL 4WD V8-6.0L Service Manual | Operation CHARM Operation CHARM : Car repair...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL 4WD V8-5.3L Service Manual | Operation CHARM Operation CHARM : Car repair...
Exact Vehicle Hubs
Browse →Open the exact vehicle hub grounded by OEM manual evidence related to P0507.
Open the exact vehicle hub grounded by OEM manual evidence related to P0507.
Open the exact vehicle hub grounded by OEM manual evidence related to P0507.
Open the exact vehicle hub grounded by OEM manual evidence related to P0507.
Related Codes
The idle air control (IAC) valve is not maintaining proper idle speed.
Idle speed is too low. The IAC is trying to raise it but cannot.
The engine is running lean on bank 1 — too much air or not enough fuel. The ECM has maxed out its fuel trim trying to compensate. Common causes include vacuum leaks and dirty MAF sensors.
Frequently Asked Questions
- Is high idle dangerous?
- Not directly dangerous but it wastes fuel and makes the car lurch forward when put in gear. Fix it for safety.
- Can a vacuum leak cause high idle?
- Yes — a vacuum leak lets unmetered air in, raising idle speed. The ECM adds fuel but cannot reduce the extra air.

