Powertrain
generic / SAE
P2377
Turbocharger Inlet Pressure Sensor B Circuit High
Same as P2374 with the signal voltage above the plausible range. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number3 / 77
Possible causes
- Signal shorted to supply high
- Sensor ground open medium
- Connector pins corroded - high contact resistance low
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–400 €
- Estimated time: 0.6–1.6 h
- Component: turbo inlet pressure sensor b
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012