X5 35d - 452A and 4A6F codes
 

Hello peeps,
I hope someone could shed some light on the following. I got a CEL, and according to Carly, here are the 2 codes that my X5 35d is throwing (452A and 4A6F). They came up after a fuel filter change. Beside the codes, car starts and runs fine.

Here’s the detailed description of both codes:

Carly for BMW - detailed Fault-Code Log

Found Faults:
--Engine / Motor--
*** 452A:Info - particulate filter system ***
* Fault-Set 1 - ( 209640 km)

* * * Activation period for the main injection 1: 156.25 us
* * * Actuator voltage Up-level (1 byte) 0: 147.00 V
* * * Actuator voltage Up-level (1 byte) 1: 64.00 V
* * * Averaged value of the last three stored values self-diagnosis by the NOx sensor upstream of the SCR: -193.75 %
* * * Charge air temperature after intercooler: 93.00 degC
* * * Charge current limit (1 byte) 4: 564.71 mA
* * * Differential pressure across the particulate filter: 139.53 hPa
* * * DSMEnv_stECUEnv: 59.00 -
* * * Exhaust gas temperature before catalytic converter: 32.35 degC
* * * generator power: 87.00 A
* * * Injection amount PoI2 before correcting the fault monitoring: -95.72 mg
* * * Isttastverhältnis - low-pressure exhaust gas recirculation control (1 byte): 94.90 %
* * * maximum rail pressure of the last 10ms: 384.31 bar
* * * MoCSOP_ctErrMM_mp 2: 0.00 -
* * * MoCSOP_ctErrMM_mp 3: 99.00 -
* * * Performance EKP (U * I) filtered: 82.00 W
* * * Rail pressure - Setpoint: 501.96 bar
* * * Rail pressure control valve - nominal value of the drive: 7.84 mA
* * * received neutral value for torque requirements from the drag torque control (MSR): 0.00 -
* * * status DSC: 40.00 -
* * * Status of Gradiententests: 72.00 -
* * * The measured from LSU lambda value 0: 45.30 -
* * * vehicle speed: 172.00 km/h
* * * Weighted average temperature of the SCR catalyst (1 byte): -50.00 degC

*** 4A6F:glow plug ***
* Fault-Set 1 - ( 209640 km)

* * * Activation period for the main injection 1: 156.25 us
* * * Actuator voltage Up-level (1 byte) 0: 147.00 V
* * * Actuator voltage Up-level (1 byte) 1: 64.00 V
* * * Averaged value of the last three stored values self-diagnosis by the NOx sensor upstream of the SCR: -193.75 %
* * * Charge air temperature after intercooler: 93.00 degC
* * * Charge current limit (1 byte) 4: 564.71 mA
* * * Differential pressure across the particulate filter: 139.53 hPa
* * * DSMEnv_stECUEnv: 58.00 -
* * * Exhaust gas temperature before catalytic converter: 36.47 degC
* * * generator power: 87.00 A
* * * Injection amount PoI2 before correcting the fault monitoring: -95.75 mg
* * * Isttastverhältnis - low-pressure exhaust gas recirculation control (1 byte): 94.90 %
* * * maximum rail pressure of the last 10ms: 384.31 bar
* * * MoCSOP_ctErrMM_mp 2: 0.00 -
* * * MoCSOP_ctErrMM_mp 3: 99.00 -
* * * Performance EKP (U * I) filtered: 82.00 W
* * * Rail pressure - Setpoint: 501.96 bar
* * * Rail pressure control valve - nominal value of the drive: 7.84 mA
* * * received neutral value for torque requirements from the drag torque control (MSR): 0.00 -
* * * status DSC: 40.00 -
* * * Status of Gradiententests: 72.00 -
* * * The measured from LSU lambda value 0: 45.30 -
* * * vehicle speed: 172.00 km/h
* * * Weighted average temperature of the SCR catalyst (1 byte): -50.00 degC

* Fault-Set 2 - ( 24584 km)

* * * Activation period for the main injection 1: 1451.95 us
* * * Actuator voltage Up-level (1 byte) 0: 48.00 V
* * * Actuator voltage Up-level (1 byte) 1: 0.00 V
* * * Averaged value of the last three stored values self-diagnosis by the NOx sensor upstream of the SCR: -400.00 %
* * * Charge air temperature after intercooler: 159.00 degC
* * * Charge current limit (1 byte) 4: 5270.59 mA
* * * Differential pressure across the particulate filter: 562.55 hPa
* * * DSMEnv_stECUEnv: 42.00 -
* * * Exhaust gas temperature before catalytic converter: 192.94 degC
* * * generator power: 245.00 A
* * * Injection amount PoI2 before correcting the fault monitoring: -20.02 mg
* * * Isttastverhältnis - low-pressure exhaust gas recirculation control (1 byte): 25.10 %
* * * maximum rail pressure of the last 10ms: 0.00 bar
* * * MoCSOP_ctErrMM_mp 2: 16.00 -
* * * MoCSOP_ctErrMM_mp 3: 5.00 -
* * * Performance EKP (U * I) filtered: 32.00 W
* * * Rail pressure - Setpoint: 219.61 bar
* * * Rail pressure control valve - nominal value of the drive: 517.65 mA
* * * received neutral value for torque requirements from the drag torque control (MSR): 0.00 -
* * * status DSC: 237.00 -
* * * Status of Gradiententests: 0.00 -
* * * The measured from LSU lambda value 0: 12.53 -
* * * vehicle speed: 63.00 km/h
* * * Weighted average temperature of the SCR catalyst (1 byte): -45.88 degC

If you reset, do they come back??

210km so 130kmiles?

for some reason i am thinking that 452a DPF code is 'informational' ...as in 'you need to replace the DPF soon

Looks like you had a glow plug code at 25k kms? Some time ago. Then one recently. Might need new plugs/controller.

Yes, the same fault codes come back once reset.
I checked and the last regen occurred 85 km ago. Probably, even with the regens, carbon built up is too much by now.
One thing to add; I’ve been having a leak from the connector that sits just on top of the glow plug controller. Possibly all the coolant dripping on the controller has damaged it.