Turbo/Super Charger Boost Control Solenoid Circuit High
The P0048 code means the vehicle's onboard diagnostic system has detected: Turbo/Super Charger Boost Control Solenoid Circuit High. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $200 - $600 (parts and labor)
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What Are the Symptoms of P0048?
- Check Engine Light on
- Overboosting condition possible
- Engine may enter limp mode
- Turbo surge or compressor noise
What Causes P0048? (Most Likely First)
- Short circuit in boost control solenoid wiring Very High
- Internally shorted boost control solenoid High
- Water or debris in solenoid connector Moderate
- ECM output driver failure Low
Can I Still Drive with P0048?
Short distances only. P0048 is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does P0048 mean?
P0048 indicates a high voltage condition in the turbo or supercharger boost control solenoid circuit, which could lead to an overboosting condition.
Is P0048 dangerous?
P0048 can potentially cause overboosting, which is harmful to engine components. The ECM usually enters limp mode to protect the engine, but prompt repair is strongly recommended.
How do I fix P0048?
Common fixes include repairing a short circuit in the solenoid wiring, replacing the boost control solenoid, or clearing moisture from the connector.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P0048?
-
Confirm P0048 with scan tool and review freeze frame data
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Inspect wiring to boost control solenoid for shorts to power
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Measure solenoid resistance and check for internal short
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Check connector for moisture or contamination
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
P0048 on Diesel, EV & Equipment
The same code ID appears across other engines and platforms. The diagnostic flow varies by manufacturer — these are the platform-specific breakdowns:
Which Vehicles Commonly Get P0048?
- 2010-2020 Ford F-150 EcoBoost
- 2012-2018 Audi A4 2.0T
- 2013-2019 BMW 328i
- 2011-2017 Volkswagen GTI
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