P0507 on Ford
Idle Air Control System RPM Higher Than Expected
P0507 on Ford vehicles indicates idle air control system rpm higher than expected. Au7o has documented this code across 2 Ford models — most commonly on E-Series, Transit Connect. This code means the engine is idling faster than the computer's target idle speed, typically by a set margin such as 200 RPM above commanded. The engine control module manages idle by metering a small amount of air around the throttle plate (via an idle air control valve or electronic throttle), and when it can't bring the RPM down to target it flags this code. The most common real cause is unmetered air sneaking into the intake — a vacuum leak — that the computer can't compensate for. It generally indicates extra air entering the engine or a problem with the idle/throttle control system. Typical repair costs on Ford range from $50 to $300, depending on the specific model and root cause.
Common Causes of P0507
- •Vacuum or intake air leak (hoses, gaskets, intake boot)
- •Dirty or sticking throttle body or throttle plate
- •Faulty or stuck idle air control valve
- •Leaking intake manifold or throttle body gasket
- •Stuck-open PCV valve or cracked PCV hose
- •Dirty mass airflow sensor giving false readings
- •Failing throttle position sensor
- •Leaking brake booster or its vacuum hose
P0507 on Ford by Model
Ford E-Series(1 issue)
- Idle Air Control Valve Sticking1997-2004
The IAC valve becomes clogged with carbon deposits, causing erratic idle speed, stalling at stops, and surging idle. Particularly common on 5.4L and 4.6L Triton engines in fleet vehicles with frequent stop-and-go use.
Ford Transit Connect(1 issue)
- PCM Software Calibration Causing Intermittent Stalling2017-2020
Multiple 2017-2020 Transit Connect owners report intermittent stalling at idle or during low-speed maneuvers, traced to PCM software calibration issues. The engine drops RPMs erratically and stalls, particularly when the AC compressor engages or when transitioning from reverse to drive. Ford released TSB 19-2346 addressing this with an updated PCM calibration, but many vehicles remain unflashed.
Looking for P0507 on a different make?
View P0507 across all makes →Frequently Asked Questions
What does P0507 mean on Ford?▼
P0507 stands for "Idle Air Control System RPM Higher Than Expected." This code means the engine is idling faster than the computer's target idle speed, typically by a set margin such as 200 RPM above commanded. The engine control module manages idle by metering a small amount of air around the throttle plate (via an idle air control valve or electronic throttle), and when it can't bring the RPM down to target it flags this code. The most common real cause is unmetered air sneaking into the intake — a vacuum leak — that the computer can't compensate for. It generally indicates extra air entering the engine or a problem with the idle/throttle control system. On Ford specifically, this code is documented across 2 models.
What causes P0507 on Ford vehicles?▼
Common causes on Ford: Vacuum or intake air leak (hoses, gaskets, intake boot), Dirty or sticking throttle body or throttle plate, Faulty or stuck idle air control valve, Leaking intake manifold or throttle body gasket, Stuck-open PCV valve or cracked PCV hose. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0507 on a Ford?▼
Repair costs on Ford range from $50 to $300, depending on the specific model and root cause.
Which Ford models have P0507 documented?▼
Au7o has documented P0507 on 2 Ford models: E-Series, Transit Connect.