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07-10-2018, 04:47 AM | #1 |
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n53 faultcodes 2AAF and 2AAE
Hey guys!
The car is a 523 Lci 2007 190PS with n53 engine , 215000 km . If i'm not wrong the n53 Engine is similar to the n54, but without the turbos, it's direct injected. I'm getting a message on iDrive telling me Fuel Pump Fault. 2AAF - Fuel pump; plausibility- Intermittent . 2AAE - Fuel pump - Intermittent But the car runs great. I have even monitored the fuel pressure, Low pressure pump is Feeding the HPFP with ~5000hPa , and the rail pressure is ~200,000hPa . Back in 2016 the previous owner got the HPFP replaced and NOX sensor and coils. Last edited by kenzoo; 07-23-2018 at 06:17 AM.. Reason: more detailed |
03-09-2019, 03:45 AM | #3 |
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Hi kenzoo,
nice to hear, you have the same vehicle as me, 175000 km. Back in 2012 the previous owner got the HPFP replaced and coils, NOx sensor is original. Unfortunately I have a problem now with cold idle run. After start runs engine at first fine 1200 reduces then to 700, but after in a few sec it makes a spice down and start to run unevently and MIL light comes on. After new start runs fine. Some times a fault message from NOx sensor (INPA). |
Appreciate
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