P2376 code meaning
Turbocharger/Supercharger Inlet Pressure Sensor B Circuit Low
Powertrain system Generic code P23xx codes Check engine light
What P2376 means
P2376 is set when the output voltage of compressor inlet pressure sensor B drops below its lower limit. No maker documents the B code publicly; GM's A version P012C on the supercharged LT4 gives an idea of the scale. There the threshold is 3 % of the 5 V reference, equal to roughly 6 kPa – a value no intake can reach in reality. The check runs continuously with one sample every 12.5 ms and fails once 320 of 400 samples are below the limit, so a steady fault is caught within a five-second window; the code is Type B. Typical reasons are a signal lead touching ground, a broken 5 V feed or a dead sensor. The ECM falls back on a substitute value and may cap boost on that compressor.
P2376 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2376
- Check engine light on
- Live data show an inlet pressure far below ambient
- Possible boost limitation
Common causes of P2376
- Most likelySignal wire of sensor B shorted to ground
- Possible5 V reference to sensor B open
- PossibleSensor B failed
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 bSensor wiringSensor reference voltage
What each part of P2376 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. |
| 76 | The exact fault in that area. |
What to do next
- Note P2376 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 P2376
What does P2376 mean?
P2376 means "Turbocharger/Supercharger Inlet Pressure Sensor B Circuit Low". P2376 is set when the output voltage of compressor inlet pressure sensor B drops below its lower limit. It is a generic code, so it means the same on every make.
Is it safe to drive with P2376?
Drive gently and only to a workshop. With P2376 the car can go into limp mode (reduced power) to protect itself.
Will P2376 fail an emissions test?
Yes, it can. P2376 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 P2376 to fix?
Difficulty: easy. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2376 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.