P2383
EGR Sensor D Circuit Range or Performance
Same as P2381 but with the signal in plausible voltage range yet not matching the engine model - drift, partial blockage of the reference port, or a slow sensor.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Check engine light on
- Pinging or knocking under load
- Power loss and hesitation
- Possible rough idle
- Failed emissions inspection (NOx)
Common causes
Ordered by how often each turns out to be the cause.
- Sensor element driftedCommon
- Reference port partially blocked by sootPossible
Parts involved
- EGR Sensor D
P2383 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.