What does code P2373 mean?

Q: What does code P2373 mean?

Fuel Volume Regulator B Control Circuit High. P2373 indicates that the engine control module has detected a high voltage condition on the control circuit for Fuel Volume Regulator B, which is a solenoid valve that meters fuel pressure or flow in the high-pressure fuel system. The circuit is considered high when the voltage exceeds the expected range for the commanded state, often due to a short to power, an open circuit, or a faulty regulator.

DTC codes / P23xx · Ignition system and misfire / P2373

P2373Fuel Volume Regulator B Control Circuit High

P2373 indicates that the engine control module has detected a high voltage condition on the control circuit for Fuel Volume Regulator B, which is a solenoid valve that meters fuel pressure or flow in the high-pressure fuel system. The circuit is considered high when the voltage exceeds the expected range for the commanded state, often due to a short to power, an open circuit, or a faulty regulator.

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.