Ford P1505 Error Code: How to Fix It
Medium 1-2 hours Medium Severity
Verified June 2026
- Error Code
- P1505
- Brand
- Ford
- Product Type
- automotive
- Severity
- Medium
- DIY Difficulty
- Medium
- Estimated Fix Time
- 1-2 hours
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Tools You'll Need
- OBD2 scanner
- Basic hand tools
- Throttle body cleaner
- MAF sensor cleaner
- Carburetor cleaner
- Clean rags
- Flashlight
How to Fix Error Code P1505
-
Check for vacuum leaks
Ensure the engine is cool before handling any components to avoid burns. -
Clean the throttle body
Disconnect the negative battery cable before cleaning and wait 10 minutes for the system to reset. -
Inspect the idle air control valve
-
Test the mass airflow sensor
Handle the MAF sensor carefully as the sensing element is delicate and expensive to replace. -
Check engine air filter
-
Perform idle relearn procedure
-
Clear codes and test drive
Parts You May Need
Idle Air Control Valve
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Mass Airflow Sensor
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Vacuum Hoses
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Engine Air Filter
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Throttle Body Gasket
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Idle Air Control Valve
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Mass Airflow Sensor
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Vacuum Hoses
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Engine Air Filter
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Throttle Body Gasket
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Idle Air Control Valve
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Mass Airflow Sensor
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Vacuum Hoses
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Engine Air Filter
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Throttle Body Gasket
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Idle Air Control Valve
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Mass Airflow Sensor
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Vacuum Hoses
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Engine Air Filter
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Throttle Body Gasket
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Idle Air Control Valve
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Mass Airflow Sensor
Check Price on Amazon
Vacuum Hoses
Check Price on Amazon
Engine Air Filter
Check Price on Amazon
Throttle Body Gasket
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Idle Air Control Valve
Check Price on Amazon
Mass Airflow Sensor
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Vacuum Hoses
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Engine Air Filter
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Throttle Body Gasket
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When to Call a Professional
Contact a professional mechanic if the code persists after completing these steps, if you discover internal engine damage, or if you're uncomfortable working with engine components. Professional diagnosis may be needed for internal IAC valve motor failure or PCM issues.Frequently Asked Questions
Can I drive with Ford error code P1505?
You can drive short distances with P1505, but the vehicle may experience rough idling, stalling, or poor performance. Address the issue promptly to prevent potential damage to engine components.
What causes Ford P1505 error code?
P1505 is typically caused by vacuum leaks, dirty throttle body, faulty idle air control valve, contaminated mass airflow sensor, or clogged air filter affecting the engine's ability to control idle speed.
How much does it cost to fix Ford P1505?
DIY fixes like cleaning can cost $10-30 in supplies. Professional diagnosis typically costs $100-150. Part replacement costs vary: IAC valve ($50-150), MAF sensor ($100-300), or throttle body ($200-500) depending on the root cause.
Will Ford P1505 cause my car to fail emissions testing?
Yes, P1505 will likely cause emissions test failure as it affects engine performance and idle quality. The code must be resolved and the system must complete its readiness monitors before passing emissions testing.
How do I reset Ford P1505 after fixing the problem?
Use an OBD2 scanner to clear the code, or disconnect the battery for 15 minutes. After clearing, perform the idle relearn procedure by letting the engine idle for 10 minutes, then drive normally to allow the system to recalibrate.