Engine Turbocharger Boost Pressure Sensor Out of Range

The engine's computer is detecting that the pressure from the turbocharger's boost sensor is too high or too low compared to what it should be.

The ECM monitors the boost pressure value from the turbocharger sensor and compares it to a predefined range for proper performance. If it sees an unexpected value, like less than 5 psi or over 30 psi under certain conditions, it triggers this code.

Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.

1. 1Check the wiring and connectors to the turbocharger boost pressure sensor for corrosion or damage (visual inspection). Decision Point: If there's any visible damage, repair/replace before proceeding.
2. 2Test the physical boost pressure using a gauge hooked up to the intake manifold—you're looking for values between 8-15 psi under load conditions. Decision Point: If the physical boost pressure is in the normal range, consider replacing the sensor; if out of range, suspect issues with turbocharger or intake system components.
3. 3Inspect for vacuum leaks around hoses and intercooler connections—any leaks can cause incorrect pressure readings. Use smoke testing if necessary. Decision Point: If leaks are found, seal or replace affected hoses. If none, look into turbocharger condition.

• Faulty turbocharger boost pressure sensor
• Vacuum leaks in charge air system
• Faulty turbocharger
• Clogged air filter
• Wiring issues or damaged connectors

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