P2384
EGR Sensor D Circuit Intermittent
Same as P2381 but the signal is intermittent - typically a connector or harness fault. EGR mixes inert exhaust into intake to lower combustion peak temperature — too little raises NOx, too much causes misfires and rough running.
- 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.
- Intermittent contact at connector or terminalCommon
- Harness chafed or pinchedPossible
- Connector with intermittent contact under vibrationLess likely
Parts involved
- EGR Sensor D
- EGR Sensor Wiring D
P2384 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.