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P0507 on Buick Enclave: Fix & DLC Location

Factory diagnostic troubleshooting wire for fault code P0507 (Idle Control System RPM Higher Than Expected - Diagnosis) specifically on the Buick Enclave (2020–2026, 3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP)).

2020–2026
EnclaveSUV
Sensor Voltage Ref
0.1V – 5.0V Ref
Enclave SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Drivable (Short Trip)
Medium urgency level
Est. DIY Time
45 – 90 Min
Basic hand tools
Check P0507 On Another Buick Model:

1. Symptoms of P0507 on Buick Enclave

When the Engine Control Module (ECM/PCM) on your Buick Enclave (3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP)) logs fault code P0507, drivers commonly observe:

Engine idles at 1,000+ RPM in park/neutral on Buick Enclave (3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP))
RPM surges or hunts at red lights on Buick Enclave (3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP))
Check Engine Light illuminated on Buick Enclave (3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP))
Buick Enclave OBD-II Port Location
The 16-pin diagnostic connector is located Driver lower knee bolster panel. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Buick Enclave

Historical warranty claims and technical repair bulletins for Buick Enclave point to the following failure distribution:

55%
Intake manifold vacuum leak (Buick OEM Part)
25%
Carbon buildup causing sticky electronic throttle body (Buick OEM Part)
12%
Uncalibrated idle air volume after battery disconnect (Buick OEM Part)
8%
Faulty PCV valve stuck open (Buick OEM Part)

3. Step-by-Step DIY Repair Guide for Buick Enclave

01
Check for Unmetered Vacuum Leaks

Spray brake cleaner around intake manifold gaskets; an RPM change reveals the leak location. on the Buick Enclave equipped with 3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP).

02
Clean Throttle Body & Carbon Deposits

Gently clean carbon soot around throttle blade using throttle cleaner and microfiber towel. on the Buick Enclave equipped with 3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP).

03
Perform Idle Air Volume Relearn Procedure

Follow vehicle-specific ignition key on/off timing sequence or use OBD scanner to reset baseline idle. on the Buick Enclave equipped with 3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP).

Other Common Fault Codes on Buick Enclave

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Buick Enclave:

4. Buick Enclave P0507 FAQs

What causes code P0507 to trigger on a Buick Enclave?

On the Buick Enclave (3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP)), P0507 is most frequently caused by Intake manifold vacuum leak or Carbon buildup causing sticky electronic throttle body.

Where is the OBD-II port located on my Buick Enclave?

On the Buick Enclave, the 16-pin DLC diagnostic connector is located Driver lower knee bolster panel. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Buick Enclave with code P0507?

Driveable, but braking distance may increase slightly due to high engine idle. Given that P0507 carries a Medium severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.