P2375 code meaning
Turbocharger/Supercharger Inlet Pressure Sensor B Circuit Range/Performance
Powertrain system Generic code P23xx codes Check engine light
What P2375 means
With P2375 the signal of compressor inlet pressure sensor B is electrically valid but implausible – stuck, offset or out of step with the other pressure values. No manufacturer publishes the B code; GM's 2018 table for the supercharged LT4 V8 describes the A counterpart P012B in detail. After a long enough engine-off period all induction pressures have equalised, so the reading must lie in the normal atmospheric range; with the engine turning between 400 and 6,200 rpm it is weighed against models of airflow, manifold pressure and throttle, where single model errors above 30 kPa count. GM rates the fault Type B, two trips. On a twin-turbo engine a clogged filter on one side or a leaking duct to compressor B can trigger it as readily as a drifting sensor.
P2375 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 2 hours
- Clears after repairAfter a drive cycle
Symptoms of P2375
- Check engine light after two trips
- Uneven boost between the two turbochargers
- Reduced power
Common causes of P2375
- Most likelySensor B drifted or stuck
- PossibleAir filter on the side of compressor B clogged
- PossibleLeaking or collapsed duct ahead of compressor B
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Turbocharger inlet pressure sensor bAir filterIntake ductSensor wiring
What each part of P2375 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 3 | Area: ignition system or misfire. |
| 75 | The exact fault in that area. |
What to do next
- Note P2375 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2375
What does P2375 mean?
P2375 means "Turbocharger/Supercharger Inlet Pressure Sensor B Circuit Range/Performance". With P2375 the signal of compressor inlet pressure sensor B is electrically valid but implausible – stuck, offset or out of step with the other pressure values. It is a generic code, so it means the same on every make.
Is it safe to drive with P2375?
Drive gently and only to a workshop. With P2375 the car can go into limp mode (reduced power) to protect itself.
Will P2375 fail an emissions test?
Yes, it can. P2375 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2375 to fix?
Difficulty: easy. A typical repair takes 0.3 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2375 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.