Istvan
Check Engine Light and Rail Pressure Sensor Issue on BMW 5
Summary of the thread
A 2005 BMW 5 with 250,000 km has a check engine light issue, suspected to be related to the rail pressure sensor. To diagnose the problem, it's recommended to use an OBD-II scanner to check for error codes, which will help confirm if the rail pressure sensor is the cause or if another issue is present. Further guidance can be provided based on the error codes retrieved.
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3 comment(s)
CarlyMechanic
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The error codes 003f30, 004302
The error code 003f30 typically relates to the fuel rail pressure sensor, while 004302 can indicate an issue with the fuel system. Start by inspecting the fuel rail pressure sensor for any visible damage or loose connections. If everything looks fine, consider cleaning the sensor and checking the wiring for any signs of wear or damage. If the problem persists, it might be necessary to replace the sensor. Let us know how it goes or if you have any further questions!
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BMW
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5
CarlyMechanic
Start by checking for any stored error codes using an OBD-II scanner. This will help confirm if the rail pressure sensor is the issue or if there's another underlying problem. Let us know what codes you find, and we can guide you further.