P2380 indicates a malfunction in the EGR (Exhaust Gas Recirculation) sensor D circuit. The powertrain control module (PCM) has detected an abnormal voltage or resistance condition in that sensor’s wiring or sensor itself.
The sensor itself can fail electrically, producing an out‑of‑range voltage that triggers the code.
Broken wires, poor contacts, or corrosion in the sensor circuit can cause intermittent or constant voltage errors.
A stuck or leaking EGR valve can create abnormal pressure/temperature conditions that affect the sensor reading.
A weak or intermittent 5 V reference supply from the PCM can cause the sensor circuit to read incorrectly.
Only after ruling out sensor, wiring, and valve problems should a defective PCM be considered, as it is rarely the root cause.
No. In the overwhelming majority of cases the problem is a bad sensor, wiring, or EGR valve. Replacing the PCM without confirming those components is usually unnecessary and costly.
Yes, if the underlying fault (sensor, wiring, or valve) is corrected and the PCM’s stored code is cleared, the light should turn off. If it returns, further diagnosis is needed.
Yes. A malfunctioning EGR sensor can cause the engine to run richer, raising hydrocarbon and carbon monoxide emissions, which may cause a failed emissions inspection.
Cleaning a corroded connector can sometimes resolve the issue if the problem is poor contact. However, the connector should be inspected for damage and repaired or replaced if necessary.