Turbocharger Inlet Pressure Sensor B Circuit Range or Performance
Same as P2374 but with the signal in plausible range yet not matching the engine model under boost. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
Affected components
- Turbo inlet pressure sensor b
- Turbocharger b
Common causes
- High likelihood: Sensor element drifted
- Medium likelihood: Reference hose blocked or kinked
Possible symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.