Cadillac Error Code P0507: How to Fix It
Medium 1-2 hours Low Severity
Verified June 2026
- Error Code
- P0507
- Brand
- Cadillac
- Product Type
- automotive
- Severity
- Low
- 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
- Clean rags
- Multimeter
- Safety glasses
How to Fix Error Code P0507
-
Scan for Additional Codes
Ensure the parking brake is engaged and the vehicle is in park before performing diagnostics. -
Check for Vacuum Leaks
Keep hands and loose clothing away from moving engine parts and hot surfaces. -
Clean the Throttle Body
Disconnect the negative battery cable before cleaning to prevent electrical issues. Allow engine to cool completely before starting work. -
Inspect the Mass Airflow Sensor
MAF sensor elements are extremely delicate - do not touch them with your fingers or any tools. -
Check the Idle Air Control Valve
Refer to your specific Cadillac model's wiring diagram before applying voltage to avoid damage. -
Perform Throttle Relearn Procedure
-
Clear Codes and Test Drive
Parts You May Need
Vacuum hoses
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Idle air control valve
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Mass airflow sensor
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Throttle body
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Throttle body cleaner
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MAF sensor cleaner
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Vacuum hoses
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Idle air control valve
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Mass airflow sensor
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Throttle body
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Throttle body cleaner
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MAF sensor cleaner
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Vacuum hoses
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Idle air control valve
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Mass airflow sensor
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Throttle body
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Throttle body cleaner
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MAF sensor cleaner
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Vacuum hoses
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Idle air control valve
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Mass airflow sensor
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Throttle body
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Throttle body cleaner
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MAF sensor cleaner
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Vacuum hoses
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Idle air control valve
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Mass airflow sensor
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Throttle body
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Throttle body cleaner
Check Price on Amazon
MAF sensor cleaner
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Vacuum hoses
Check Price on Amazon
Idle air control valve
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Mass airflow sensor
Check Price on Amazon
Throttle body
Check Price on Amazon
Throttle body cleaner
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MAF sensor cleaner
Check Price on Amazon
Vacuum hoses
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Idle air control valve
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Mass airflow sensor
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Throttle body
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Throttle body cleaner
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MAF sensor cleaner
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Vacuum hoses
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Idle air control valve
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Mass airflow sensor
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Throttle body
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Throttle body cleaner
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MAF sensor cleaner
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When to Call a Professional
Call a professional mechanic if the P0507 code returns after following all steps, if you're uncomfortable working with electrical components, or if you discover internal engine problems during inspection. Also seek professional help if you lack the proper tools or if additional complex codes appear during diagnosis.Frequently Asked Questions
Can I drive my Cadillac with P0507 code?
Yes, you can drive with P0507 in most cases, but the high idle may cause increased fuel consumption and potential engine wear. Address the issue promptly to prevent further problems and ensure optimal performance.
What causes P0507 high idle in Cadillac vehicles?
Common causes include vacuum leaks, dirty throttle body, faulty idle air control valve, contaminated mass airflow sensor, or carbon buildup in the intake system. Vacuum leaks are the most frequent culprit.
How much does it cost to fix P0507 on a Cadillac?
DIY fixes typically cost $20-50 for cleaning supplies. Professional repair costs range from $100-400 depending on the root cause, with vacuum hose replacement being least expensive and throttle body replacement being most costly.
Will P0507 cause my Cadillac to fail emissions testing?
Yes, an active P0507 code will typically cause your vehicle to fail emissions testing. The code must be resolved and the drive cycle completed before passing inspection.
How do I know if my throttle body needs replacement?
If cleaning doesn't resolve the issue and the throttle plate doesn't move smoothly or has physical damage, replacement may be necessary. Professional diagnosis can confirm if the throttle body motor or position sensor has failed internally.