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P0507 on Cadillac CT5-V Blackwing: Fix & DLC Location

Factory diagnostic troubleshooting wire for fault code P0507 (Idle Control System RPM Higher Than Expected - Diagnosis) specifically on the Cadillac CT5-V Blackwing (2022–2026, 6.2L Handbuilt Supercharged LT4 V8 (668HP / 659 lb-ft / 6-Speed Manual / 10-Speed Auto)).

Cadillac CT5-V Blackwing
DIY Parts Estimate
$40 - $250 (DIY Throttle Relearn: $0)
CT5-V Blackwing OEM Fitment
Shop Labor Quote
$180 – $380
Based on $165/hr labor
Drivability Status
Drivable (Short Trip)
Medium urgency level
Est. DIY Time
45 – 90 Min
Basic hand tools
Check P0507 On Another Cadillac Model:
Cadillac EscaladeCadillac Escalade-VCadillac CT5Cadillac CT5-V BlackwingCadillac XT5Cadillac Lyriq

1. Symptoms of P0507 on Cadillac CT5-V Blackwing

When the Engine Control Module (ECM/PCM) on your Cadillac CT5-V Blackwing (6.2L Handbuilt Supercharged LT4 V8 (668HP / 659 lb-ft / 6-Speed Manual / 10-Speed Auto)) logs fault code P0507, drivers commonly observe:

Engine idles at 1,000+ RPM in park/neutral on Cadillac CT5-V Blackwing (6.2L Handbuilt Supercharged LT4 V8 (668HP / 659 lb-ft / 6-Speed Manual / 10-Speed Auto))
RPM surges or hunts at red lights on Cadillac CT5-V Blackwing (6.2L Handbuilt Supercharged LT4 V8 (668HP / 659 lb-ft / 6-Speed Manual / 10-Speed Auto))
Check Engine Light illuminated on Cadillac CT5-V Blackwing (6.2L Handbuilt Supercharged LT4 V8 (668HP / 659 lb-ft / 6-Speed Manual / 10-Speed Auto))
Cadillac CT5-V Blackwing OBD-II Port Location
The 16-pin diagnostic connector is located Driver A-pillar base kick panel. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Cadillac CT5-V Blackwing

Historical warranty claims and technical repair bulletins for Cadillac CT5-V Blackwing point to the following failure distribution:

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

3. Step-by-Step DIY Repair Guide for Cadillac CT5-V Blackwing

01
Check for Unmetered Vacuum Leaks

Spray brake cleaner around intake manifold gaskets; an RPM change reveals the leak location. on the Cadillac CT5-V Blackwing equipped with 6.2L Handbuilt Supercharged LT4 V8 (668HP / 659 lb-ft / 6-Speed Manual / 10-Speed Auto).

02
Clean Throttle Body & Carbon Deposits

Gently clean carbon soot around throttle blade using throttle cleaner and microfiber towel. on the Cadillac CT5-V Blackwing equipped with 6.2L Handbuilt Supercharged LT4 V8 (668HP / 659 lb-ft / 6-Speed Manual / 10-Speed Auto).

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 Cadillac CT5-V Blackwing equipped with 6.2L Handbuilt Supercharged LT4 V8 (668HP / 659 lb-ft / 6-Speed Manual / 10-Speed Auto).

Other Common Fault Codes on Cadillac CT5-V Blackwing

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Cadillac CT5-V Blackwing:

4. Cadillac CT5-V Blackwing P0507 FAQs

What causes code P0507 to trigger on a Cadillac CT5-V Blackwing?

On the Cadillac CT5-V Blackwing (6.2L Handbuilt Supercharged LT4 V8 (668HP / 659 lb-ft / 6-Speed Manual / 10-Speed Auto)), 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 Cadillac CT5-V Blackwing?

On the Cadillac CT5-V Blackwing, the 16-pin DLC diagnostic connector is located Driver A-pillar base kick 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 Cadillac CT5-V Blackwing 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.