P2378
Turbocharger/Supercharger Inlet Pressure Sensor B Circuit Intermittent/Erratic
P2378 is an OBD-II diagnostic trouble code meaning: Turbocharger/Supercharger Inlet Pressure Sensor B Circuit Intermittent/Erratic. Common causes: turbine pressure sensor fault b, open or short circuit in the sensor circuit. Estimated repair cost: $28–89.
Symptoms
- Unstable engine operation
- Power reduction
- Increased fuel consumption
- Check Engine Light Illuminates
- Dips during acceleration
Causes
- Turbine pressure sensor fault B
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Circuit Grounding Problems
- Mechanical damage to the sensor
How to Fix
- Check the integrity of the sensor wiring and connectors
- Check resistance and sensor signal
- Clean sensor connector contacts
- Replace pressure sensor if necessary
- Check sensor circuit grounding
Related codes
Error P2378 by Vehicle Brand
FAQ
What does the P2378 code mean?
P2378 is an OBD-II diagnostic trouble code that indicates: Turbocharger/Supercharger Inlet Pressure Sensor B Circuit Intermittent/Erratic
What causes a P2378 error code?
The most common causes of P2378 include: Turbine pressure sensor fault B; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Circuit Grounding Problems.
How do I fix a P2378 diagnostic trouble code?
To fix P2378: Check the integrity of the sensor wiring and connectors. Check resistance and sensor signal. Clean sensor connector contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2378?
Limited driving only, diagnose soon
How much does it cost to fix P2378?
The estimated repair cost for P2378 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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