03-23-2024, 09:41 PM | #1 |
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!!help!! 2016 f31 n20 481b03
So my car went into limp mode randomly while it had about 1/8 tank of fuel, shut off the engine and restart, everything was fine, then same thing happened again after about 10 miles and recorded codes:
481B03 Motor current too low 110001 Cylinder injection shutdown: catalyst protection due to too low pressure in the fuel system Then I refueled to full tank, everything went ok, went home, erased the code. Till yesterday the tank was about 1/4 full, same thing and same code happened again. Google pointing me to 3 things: HPFP, LPFP, EKPS, though one of the post who had similar issue, said Dorch technician told him/her quote: "Reached out to dorch engineering and they were very positive HPFP is not the reason (quote “HPFP issues are non-binary and do not get resolved by simply clearing the memory”) and that it was likely EKP or LPFP suggesting I diagnose them somehow and replace either of them." Source: https://*********************/thread...-vs-hpfp.8770/ I'm leaning toward replacing LPFP in the tank first as both time when it happened were at lower fuel level, and it's cheapest/quickest Any suggestion/help is appreciated!!! Thanks! Last edited by S6302850; 03-23-2024 at 09:50 PM.. |
03-24-2024, 11:19 AM | #2 |
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When you have more fuel in the tank the LPFP doesn't have to work as hard. But a clog in the system could be causing a vacuum situation in the tank, so you'd want to rule that out before swapping it out.
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03-25-2024, 02:05 AM | #3 |
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Thanks for your suggestion! But any idea how do I rule out the clog? Ordered new LPFP which will arrive this Thursday, will for sure remove the old one so I can pop open the fuel tank and take a look.
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