P2382 code meaning
EGR Sensor D Circuit Low
Powertrain system Generic code P23xx codes Check engine light
What P2382 means
P2382 reports that EGR sensor D delivers almost no signal voltage. In GM's 2025 diesel ECM tables this sensor measures the pressure difference across the low-pressure EGR path, and the code sets once the raw value drops below 0.02 % of range in 480 of 600 samples, sampled every 6.25 ms once the engine is out of cranking and the relay supply exceeds 11 V; it is a Type A fault with MIL on the first trip. Behind a reading that low there is usually a broken 5 V reference, a signal line shorted to ground or a sensor without output. For the 3.0L LM2 diesel, GM bulletin 21-NA-149 advises, for P2382 and P2383, pulling gently on each wire at the differential pressure sensor connector, since conductors may break there although they test good, and taping the harness afterwards. P2381 is the high-side code.
P2382 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2382
- Check engine light on in the first trip
- Low-pressure EGR switched off
- Fault may come and go with engine vibration
Common causes of P2382
- Most likelyConductor broken right at the sensor connector (GM 21-NA-149)
- PossibleOpen 5 V reference or signal shorted to ground
- PossibleDifferential pressure sensor without output
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
EGR sensor dEGR sensor wiring d
What each part of P2382 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. |
| 82 | The exact fault in that area. |
What to do next
- Note P2382 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 P2382
What does P2382 mean?
P2382 means "EGR Sensor D Circuit Low". P2382 reports that EGR sensor D delivers almost no signal voltage. It is a generic code, so it means the same on every make.
Is it safe to drive with P2382?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2382 fail an emissions test?
Yes, it can. P2382 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 P2382 to fix?
Difficulty: medium. A typical repair takes 0.3 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2382 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.