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What is the cause of rail pressure fault 523613.2?

1 Answers

VanChloe

07/30/25 12:29am

Rail pressure fault 523613.2 indicates abnormal fuel rail pressure. Below are specific symptoms of a faulty rail pressure sensor: 1. Engine malfunction indicator light alarm: When the rail pressure sensor malfunctions, the engine fault warning light on the dashboard may illuminate. This indicator does not necessarily mean the engine itself has failed; more often, it's due to issues with related components causing the engine to operate improperly. A fault diagnostic tool is required, with P0190, P0191, P0192, P0193, and P0194 being the most common fault codes indicating rail pressure sensor failure. 2. Difficulty starting: After the rail pressure sensor fails, the engine control unit cannot determine the correct fuel injection quantity, leading to difficulty in starting the vehicle. A minor fault may require multiple attempts to start the engine successfully, while in severe cases, the engine may not start at all.

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