Powertrain
generic / SAE
P2378
Turbocharger Inlet Pressure Sensor B Circuit Intermittent or Erratic
Same as P2374 but the signal is intermittent or has spikes that the ECU cannot reconcile - typically a wiring or connector fault.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number3 / 78
Possible causes
- Intermittent contact at connector or terminal high
- Harness chafed or pinched medium
- Connector with intermittent contact under vibration 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
- Component: turbo inlet pressure wiring b
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012