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Oil Level Sensor Malfunction Nightmare
| 01-25-2022, 06:38 PM | #1 |
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Oil Level Sensor Malfunction Nightmare
Got a 2013 BMW 328i with an oil level sensor malfunction, replaced with a new BMW Hella sensor and still the same, Im getting a code 1C4110 and I checked the harness and its not getting +12v, where do I start? What sends power to the Oil level sensor? Also getting a code for terminal 15n_3 and MAP thermostat disconnected.
Last edited by mchavz484; 01-25-2022 at 06:45 PM.. |
| 01-26-2022, 07:07 AM | #2 | |
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 Looks like that power is via F03 (the 15n_3 error traces to that supply for the DME):   Provided I have the right vehicle looked up in the ETM, it would appear that all traces to a 15A fuse in engine-bay power distribution box. |
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njdangelo434.50 charlie fairmont471.50 |
| 01-26-2022, 12:24 PM | #3 |
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Replaced fuse and error does not exist anymore, oil level sensor fault still exist, does a new sensor need programming? By the way thank you for responding to my post!
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| 01-26-2022, 01:42 PM | #4 |
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Reads books at a 4th grade level; I'm an enabler
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Given where the wiring runs, I'm wondering if you have a short to ground in the harness, or a broken wire.
 With the fuse replaced: Do you have power at the connector for the level sensor? Is the ground side wire actually a good ground? The signal wire itself is a PWM signal, which is difficult to check without a scope or higher end multimeter. There is NO reprogramming necessary when changing sensors. |
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charlie fairmont471.50 |
| 01-26-2022, 03:08 PM | #6 |
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Reads books at a 4th grade level; I'm an enabler
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Drives: X5 35d, 335i Msport, X3, 325iX
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Garage List 1993 BMW 525iT [0.00]
1989 BMW 325iX [0.00] 2015 BMW 335i M-Sport [0.00] 2007 BMW X3 M-Sport [0.00] 2015 BMW X5 [0.00] |
Your next step would be a continuity test between the DME and the level sensor if you suspect the PWM wire. Alternatively you'll need access to ISTA to run diagnostics via the OBD2 connection.
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| 01-26-2022, 03:12 PM | #7 | |
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