What does code P2394 mean?

Q: What does code P2394 mean?

Diesel Intake Air Flow B Control Stuck Open. P2394 indicates that the engine control module has detected a fault in the diesel intake air flow control circuit, specifically that the control valve or actuator is stuck in the open position. The computer commands the valve to move and monitors the circuit and its effect on airflow; when the expected change does not occur, it sets this code.

DTC codes / P23xx · Ignition system and misfire / P2394

P2394Diesel Intake Air Flow B Control Stuck Open

P2394 indicates that the engine control module has detected a fault in the diesel intake air flow control circuit, specifically that the control valve or actuator is stuck in the open position. The computer commands the valve to move and monitors the circuit and its effect on airflow; when the expected change does not occur, it sets this code.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.