P0507 on Mercedes-Benz: Symptoms, Causes & DIY Fix
Official technical diagnostic wire for fault code P0507 (Idle Control System RPM Higher Than Expected - Diagnosis) specifically affecting Mercedes-Benz vehicles (C-Class, E-Class, S-Class, GLC, GLE).
1. Symptoms of P0507 on Mercedes-Benz
When the Engine Control Module (ECM/PCM) on your Mercedes-Benz logs fault code P0507, drivers commonly observe:
2. Most Likely Causes on Mercedes-Benz
Historical warranty claims and technical repair bulletins for Mercedes-Benz point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Mercedes-Benz
Spray brake cleaner around intake manifold gaskets; an RPM change reveals the leak location. on Mercedes-Benz vehicles (C-Class, E-Class).
Gently clean carbon soot around throttle blade using throttle cleaner and microfiber towel. on Mercedes-Benz vehicles (C-Class, E-Class).
Follow vehicle-specific ignition key on/off timing sequence or use OBD scanner to reset baseline idle. on Mercedes-Benz vehicles (C-Class, E-Class).
P0507 Guides by Mercedes-Benz Model
Select your specific Mercedes-Benz model below for exact OBD-II DLC port locations, wiring diagrams, and engine displacement specs:
Other Common Diagnostic Codes on Mercedes-Benz
Troubleshoot other high-frequency Check Engine Light fault codes reported across Mercedes-Benz vehicles:
4. Mercedes-Benz P0507 FAQs
What causes code P0507 to trigger on a Mercedes-Benz?
On Mercedes-Benz vehicles, P0507 is most frequently caused by Intake manifold vacuum leak or Carbon buildup causing sticky electronic throttle body. Factory sensor degradation or wiring harness wear near the engine bay are common factors.
Can I safely drive my Mercedes-Benz with code P0507?
Driveable, but braking distance may increase slightly due to high engine idle. Given that P0507 carries a Medium severity rating on Mercedes-Benz vehicles, we advise performing diagnostic scanning via the OBD-II port before extended driving.
How much does it cost to fix P0507 on a Mercedes-Benz?
DIY replacement parts typically range between $40 - $250 (DIY Throttle Relearn: $0). If serviced at an authorized Mercedes-Benz dealership, expect an additional $120–$250 in professional labor based on their $185/hr hourly rate.