Turbo/Super Charger Boost Control Solenoid Circuit/Open
The DURAMAX-P0045 (Duramax) diesel fault code means: Turbo/Super Charger Boost Control Solenoid Circuit/Open. This is a serious severity code.
- Keep driving?
- No — stop driving
- DIY difficulty
- advanced
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What Are the Symptoms of DURAMAX-P0045?
- Check Engine Light on
- Reduced power or a reduced power message
- Possible hard starting or rough running
What Causes DURAMAX-P0045? (Most Likely First)
- Open wiring or an unplugged connector High
- Failed boost control solenoid High
- Corroded connector Moderate
- Engine computer driver fault Low
Can I Still Drive with DURAMAX-P0045?
No — stop driving. DURAMAX-P0045 is rated serious severity. Continuing to drive in this state risks further damage — get it looked at before your next trip.
Frequently Asked Questions
What does P0045 mean on a Duramax?
P0045 means Turbo/Super Charger Boost Control Solenoid Circuit/Open. The engine computer has detected an open or faulty control circuit for the boost control solenoid.
Is P0045 a Duramax-specific code?
No. P0045 is a generic OBD-II code defined by SAE J2012, so it means the same thing on any vehicle that sets it. The exact conditions GM uses to set it on its diesels are in GM service information.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose DURAMAX-P0045?
Inspect the boost control solenoid connector and harness.
Check the boost control solenoid resistance against the service specification.
Check the control circuit for opens and shorts, then command it with a scan tool.
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines P0045 as a generic OBD-II code)
P0045 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:
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