04-13-2024, 08:39 PM | #1 |
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E70 codes. (4BDB & 4580)
Looking for some help regarding codes 4580 and 4BDB.
Truck runs fine when runs but when check engine light comes on goes into limp mode and get these codes. Have read some things where people replaced hpfp and fuel rail sensors and seems like don't solve issue. Any help in learning what could need replaced would be greatly appreciated. Sometimes I can drive 150 miles no issues other times a mile and limp mode appears. Don't see any consistency. Thanks Last edited by 2012bmwx5d; 04-14-2024 at 11:34 AM.. |
05-10-2024, 02:15 AM | #2 |
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Drives: Bmw e70 4.0d xdrive
Join Date: Jun 2023
Location: Tirana, Albania
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4580
Check the following possible fault causes: - Possible faults in the low-pressure fuel system: Fuel pre-supply pressure too high. - Fuel quantity control valve seized in open position - Fuel quantity control valve de-energised due to an electrical fault. Check possible fault causes, perform system test - rail pressure control 4BDB 1. Perform deviation test fuel pressure and temperature sensor. 2. Check fuel line between fuel pressure and temperature sensor and high pressure pump 3. Check screen in feed line to high pressure pump. 4. Check fuel return lines. |
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