DTC codes / P23xx · Ignition system and misfire / P233D
P233D indicates that the powertrain control module (PCM) has detected an open circuit in the supply voltage control circuit for the fuel pressure regulator B solenoid. This means the electrical path that powers the solenoid is broken, so the PCM cannot command the solenoid to adjust fuel pressure, which may affect engine performance and emissions.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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