P0507
Medium SeverityIdle Air Control System RPM Higher Than Expected
Engine System
P0507 — Instant Answer
Idle Air Control System RPM Higher Than Expected
Severity: MEDIUM SEVERITY
Meaning: Idle speed is too high. Something is allowing too much air into the engine at idle.
Safe to drive? Usually yes with caution, but confirm root cause before long trips.
Estimated repair cost: $0 - $80
Most common causes:
- 1. Vacuum leak (35-45% of cases)
- 2. Stuck IAC valve (10-25% of cases)
- 3. Throttle body sticking open (10-25% of cases)
- 4. Intake manifold gasket leak (10-25% of cases)
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 Procedures for P0507
P0507 affects the Engine Control Module. Found 146 OEM service manual procedures.
12 90 120 Removing and installing/replacing control unit bracket (Cooper 4-door hatchback, Cooper 2-door hatchback, 2020-2023) - Replacement: Remount DME control unit and the integrated supply module (PDM)
12 90 120 Removing and installing/replacing control unit bracket (Cooper 4-door hatchback, Cooper 2-door hatchback, 2020-2023) - Replacement: Remount DME control unit and the integrated supply module (PDM)
12 90 120 Removing and installing/replacing control unit bracket (Cooper 4-door hatchback, Cooper 2-door hatchback, 2020-2023) - Replacement: Remount DME control unit and the integrated supply module (PDM)
12 90 120 Removing and installing/replacing control unit bracket (Cooper 4-door hatchback, Cooper 2-door hatchback, 2020-2023) - Replacement: Remount DME control unit and the integrated supply module (PDM)
12 90 120 Removing and installing/replacing control unit bracket (Cooper 4-door hatchback, Cooper 2-door hatchback, 2020-2023) - Replacement: Remount DME control unit and the integrated supply module (PDM)
12 90 120 Removing and installing/replacing control unit bracket (Cooper 4-door hatchback, Cooper 2-door hatchback, 2020-2023) - Replacement: Remount DME control unit and the integrated supply module (PDM)
12 90 120 Removing and installing/replacing control unit bracket (Cooper 4-door hatchback, Cooper 2-door hatchback, 2020-2023) - Replacement: Remount DME control unit and the integrated supply module (PDM)
12 90 120 Removing and installing/replacing control unit bracket (Cooper 4-door hatchback, Cooper 2-door hatchback, 2020-2023) - Replacement: Remount DME control unit and the integrated supply module (PDM)
Showing 8 of 146 procedures
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.
TopScan
$51.27
DIYers who want phone-based scanning
View on TOPDON
ArtiLink600
$99
DIYers working on ABS/airbag systems
View on TOPDONGot a repair estimate for P0507? Check if the quote is fair before ordering parts.
Turn This Into a Confident Next Step
Verify the likely fault first, then compare a quote before you approve expensive work.
Affiliate disclosure: We may earn a commission at no extra cost to you.
View supporting tool options
OBD2 scanner
Read codes and freeze-frame data before you guess at the fault.
Most diagnostic jobs start with a scan tool and a verified code path.
Shop on Amazon →Battery tester
Check cranking and charging health before replacing expensive parts.
A weak battery can mimic alternator or starter problems.
Shop on Amazon →Multimeter kit
Confirm voltage, continuity, and sensor power with one simple kit.
A meter is the cheapest way to rule out a bad circuit fast.
Shop on Amazon →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.
Get the Complete Maintenance Schedule for P0507 drivers
Oil, filters, belts, brakes, and fluid intervals sent to your inbox. Unsubscribe anytime.
Not sure you want to DIY? Compare local shop pricing first.
Author & Review
Written by AllOEMManuals Editorial Team. Reviewed by ASE-certified technicians and updated with factory-reference checks for fitment-sensitive steps.
This guide was drafted with AI assistance and reviewed for accuracy by a human editor.
Last updated: 2026-05-07