What does code P2392 mean?

Q: What does code P2392 mean?

Diesel Intake Air Flow B Control Circuit Low. P2392 indicates that the powertrain control module (PCM) has detected a low-voltage condition on the control circuit for the diesel intake air flow control valve, often called the swirl control valve or intake manifold runner control. The PCM commands the valve to move, but the circuit voltage stays below the expected threshold, so the computer cannot verify proper valve operation.

DTC codes / P23xx · Ignition system and misfire / P2392

P2392Diesel Intake Air Flow B Control Circuit Low

P2392 indicates that the powertrain control module (PCM) has detected a low-voltage condition on the control circuit for the diesel intake air flow control valve, often called the swirl control valve or intake manifold runner control. The PCM commands the valve to move, but the circuit voltage stays below the expected threshold, so the computer cannot verify proper valve operation.

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.