P2383 code meaning
EGR Sensor D Circuit Range/Performance
Powertrain system Generic code P23xx codes Check engine light
What P2383 means
P2383 flags an EGR sensor D whose signal is electrically fine but makes no sense. Two published strategies show how differently makers test it. GM's 2025 diesel ECM tables check the low-pressure EGR differential pressure sensor at key-off, when there should be no pressure difference: if the averaged reading exceeds 6 %, a Type A fault is set at once, provided no circuit or intermittent fault is present. Ford's 2024–2025 gasoline summary uses P2383 for reversed hoses on its EGRP pressure sensor, judged by a signal off by more than 10 kPa or an internal temperature off by more than 27.7 °C for 5 seconds. GM bulletin 21-NA-149 adds harness checks at the sensor connector on 3.0L LM2 trucks. Mixed-up or cracked hoses, a drifting sensor and soot in the lines are the usual suspects.
P2383 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 repairAfter a drive cycle
Symptoms of P2383
- Check engine light on
- EGR rate reduced or switched off
- Often appears after work on the EGR or exhaust system
Common causes of P2383
- Most likelySensor hoses swapped, cracked or disconnected (Ford EGRP)
- PossibleSensor drifted so that it reads a pressure difference with the engine off (GM)
- PossibleSensing lines blocked by soot or condensate
- Less likelyIntermittent wire break at the sensor connector (GM 21-NA-149)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
EGR sensor dEGR diff pressure sensor
What each part of P2383 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. |
| 83 | The exact fault in that area. |
What to do next
- Note P2383 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 P2383
What does P2383 mean?
P2383 means "EGR Sensor D Circuit Range/Performance". P2383 flags an EGR sensor D whose signal is electrically fine but makes no sense. It is a generic code, so it means the same on every make.
Is it safe to drive with P2383?
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 P2383 fail an emissions test?
Yes, it can. P2383 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 P2383 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 P2383 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.