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DTC codes / P2Cxx · Hybrid propulsion / P2C9E
P2C9E indicates that the powertrain control module (PCM) has detected the fuel pressure regulator circuit 'C' is unable to maintain the commanded fuel pressure, with actual pressure falling below the desired value. The PCM monitors the regulator's control circuit and fuel pressure sensor, and when the pressure remains too low despite the regulator being commanded to increase pressure, it sets this code.
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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