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Code

P0507

Idle

Idle speed higher than expected

The engine idles higher than the ECM expects.

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Most likely causes

Vacuum leak
Dirty throttle body
Faulty idle control
Stuck-open IAC

Symptoms you may notice

High idle (1,000+ rpm)
Check engine light

Checks to run

Smoke-test for vacuum leaks
Clean the throttle body
Test idle control

Tools you may need

Smoke machine Throttle cleaner

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Idle

Idle speed lower than expected

Idle air control circuit low input

Idle air control circuit high input

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