Egr problems.

[Tony chall]

Hi can anybody shine some light on this thanks. It’s a 320d n47n CARLY DIAGNOSTICS REPORT
BMW - E90
2011
Apr 15 2020
  STATUS TOTAL ISSUES HEALTHY SYSTEMS Acceptable 1 13
 Issues (1)
 Engine
Fault code: 004873
Exhaust gas recirculation-cooling, plausibility
Details:
Injection amount PoI2 before correcting the fault monitoring : -95
MoCSOP_ctErrMM_mp 3 : 130
status DSC : 38
Exhaust gas temperature before catalytic converter : 3
DSMEnv_stECUEnv : 45
Rail pressure - Setpoint : 501
Actuator voltage Up-level (1 byte) 0 : 139
vehicle speed : 174
Activation period for the main injection 1 : 156
MoCSOP_ctErrMM_mp 2 : 0
Actuator voltage Up-level (1 byte) 1 : 76
maximum rail pressure of the last 10ms : 486
Status MSA System Abschaltverhinderer (MSA2) : 72649488
The measured from LSU lambda value 0 : 11
MoFVSS_stFrzVSS : 80
Raw value of the air mass period : 97
prohibited Elevating stability engagement of Level 1 : 0
Vorfördermenge (1 byte) : 16
Performance EKP (U * I) filtered : 0
received neutral value for torque requirements from the drag torque control (MSR) : 1
Averaged value of the last three stored values self-diagnosis by the NOx sensor upstream of the SCR : -175
Rail pressure control valve - nominal value of the drive : 235
Boost pressure plate - actual position of sensor characteristic : 24
Exhaust gas temperature before particulate filter : 0
 
 Healthy Systems (13)
 Fuel Pump
 Junction Box Passenger Module
 Transmission (GS 19)
 Foot Well Module
 Check Control Module
 Car Access System
 Dynamic Stability Control (DSC)
 Airbag
 Anti Theft Alarm System
 Interior protection
 Instrument Cluster
 Air Conditioning
 Park Distance Control (PDC)
 

[Greydog]

Morning Tony

I would clean the EGR refit make sure all the vacuum lines are in good condition and fitted, run the engine to clear any residue left (with my sons Toyota it was engine up to temp then a blast on the local dual carriageway. The huge black cloud he left behind when he floored it was something to behold) Then re-run diagnostics clear down the codes run the engine and see if any come back. 

Dave

[Tony chall]

Thanks for the reply. I fitted another egr because of the code. I cleared the code went for a run then it came back. 

[SilverJohn]

Hi Tony

Sorry to hear you're having problems.

You say you fitted another EGR valve. Was that a new one or one you had kicking around, possibly not new?

I had EGR problems with my 325D in October last year and ended up with a new one, genuine BMW part, and have had no problems since. It was fitted by a local BMW Specialist, not a main dealer. mileage at the time was around 70,000. Have only had the car for a year so don't know if this has been replaced previously.

Hope this helps.

 

[Tony chall]

Thanks for the reply it was a refurbished one. But I found it strange to have the same code with two different units. I’ve been told to check the vac pipes, the lever that is operated by the pipes does move in and out under operation. 

[Greydog]

Morning Tony

With my sons Toyota the pipework feeding the EGR was solid with soot/coke as well he brought new pipework. Also worth noting is as he only does short journeys with his tree work business his EGR clogs easily we cleaned it 3 times but the 3rd time it just wouldn't work the answer was a new EGR all fixed.

Dave

[Tony chall]

Thanks for the reply. Short journeys aren’t the problem as I do 450 miles a week with approximately 40 miles per run. Does any body know what this valve does 11747810831 cheers