[daz215]

Hi guys I have a cold idling issue. The car seems to misfire when left to idle. It's fine when you put some revs on. I'll post the inpa codes below but they're in german for some reason the N53 doesn't get English language codes .

I bought the car used with 3 months warranty, and now its just out of warranty it's decided to not play ball. There's no engine management light on for some reason but there's plenty of codes!

Any ideas will be greatly appreciated!

EDIT: I did a rough idle test in inpa and cylinder 4 was consistently going into the red, may shed a bit of light

current kilometer reading:  96476 km
___________________________________________________________

 
$error locationNr: 11013
$error locationtext: 0x2B05 Stickoxidsensor, Heizung                                  
57042B0504002205FF272B5802037B002B5C02037C002F1B01037B00
Error: 1(4) No.: 11013   0x2B05 Stickoxidsensor, Heizung                                  frequency: 255
  error type: 4  (4118 ) Leitungsunterbrechung                                              
  readines Flag: (16 ) Testbedingungen erfüllt                                              
  error status:  (32 ) Fehler momentan nicht vorhanden, nicht OBD-entprellt                 
  MIL - Status:  (48) Fehler verursacht kein Aufleuchten der Warnlampe (MIL)                
  P-Code:        P2205 NOx-Sensor Heizungssteuerkreis (Bank 1, Sensor 1) - Fehlfunktion oder Leitungsunterbrechung F_LZ: 39
ambient text   /   entry at                96472 km(n.)  88800 km(2.)  88768 km(1.) 
  Luftdurchsatz OBD                         2.56 g/s      5.12 g/s      5.12 g/s    
  Motor Status                                PL            PL            PL        
  Spannung Kl.87 Rohwert                    2.40 V        2.42 V        2.40 V      
  Status NOx-Sensor                         0.00 -        0.00 -        0.00 -      
___________________________________________________________
 
$error locationNr: 11015
$error locationtext: 0x2B07 Stickoxidsensor, elektrisch                               
57042B070800122C0C262EFD020580002EFD060381002F1908038000
Error: 2(4) No.: 11015   0x2B07 Stickoxidsensor, elektrisch                               frequency: 12
  error type: 8  (4474 ) Kurzschluss                                                        
  readines Flag: (16 ) Testbedingungen erfüllt                                              
  error status:  (32 ) Fehler momentan nicht vorhanden, nicht OBD-entprellt                 
  MIL - Status:  (48) Fehler verursacht kein Aufleuchten der Warnlampe (MIL)                
  P-Code:        P122C NOx-Sensor Schaltkreis (Bank 1) - Kurzschluss                      F_LZ: 38
ambient text   /   entry at                96456 km(n.)  96232 km(2.)  96232 km(1.) 
  Luftdurchsatz OBD                        20.48 g/s     15.36 g/s      5.12 g/s    
  Motor Status                                PL            PL           PUC        
  Spannung Kl.87 Rohwert                    2.50 V        2.52 V        2.50 V      
  Status NOx-Sensor                         0.00 -        0.00 -        0.00 -      
___________________________________________________________
 
$error locationNr: 11014
$error locationtext: 0x2B06 Stickoxidsensor, Lambda linear                            
57042B060800121F0C262EFD020580002EFD060381002F1908038000
Error: 3(4) No.: 11014   0x2B06 Stickoxidsensor, Lambda linear                            frequency: 12
  error type: 8  (4474 ) Kurzschluss                                                        
  readines Flag: (16 ) Testbedingungen erfüllt                                              
  error status:  (32 ) Fehler momentan nicht vorhanden, nicht OBD-entprellt                 
  MIL - Status:  (48) Fehler verursacht kein Aufleuchten der Warnlampe (MIL)                
  P-Code:        P121F NOx-Sensor linearer Lambdasignalschaltkreis (Bank 1) - Kurzschluss F_LZ: 38
ambient text   /   entry at                96456 km(n.)  96232 km(2.)  96232 km(1.) 
  Luftdurchsatz OBD                        20.48 g/s     15.36 g/s      5.12 g/s    
  Motor Status                                PL            PL           PUC        
  Spannung Kl.87 Rohwert                    2.50 V        2.52 V        2.50 V      
  Status NOx-Sensor                         0.00 -        0.00 -        0.00 -      
___________________________________________________________
 
$error locationNr: 11003
$error locationtext: 0x2AFB Stickoxidsensor, Lambda binär                             
57042AFB0800122F0C262EFD020580002EFD060381002F1908038000
Error: 4(4) No.: 11003   0x2AFB Stickoxidsensor, Lambda binär                             frequency: 12
  error type: 8  (4474 ) Kurzschluss                                                        
  readines Flag: (16 ) Testbedingungen erfüllt                                              
  error status:  (32 ) Fehler momentan nicht vorhanden, nicht OBD-entprellt                 
  MIL - Status:  (48) Fehler verursacht kein Aufleuchten der Warnlampe (MIL)                
  P-Code:        P122F NOx-Sensor binärer Lambdasignalschaltkreis (Bank 1) - Kurzschluss  F_LZ: 38
ambient text   /   entry at                96456 km(n.)  96232 km(2.)  96232 km(1.) 
  Luftdurchsatz OBD                        20.48 g/s     15.36 g/s      5.12 g/s    
  Motor Status                                PL            PL           PUC        
  Spannung Kl.87 Rohwert                    2.50 V        2.52 V        2.50 V      
  Status NOx-Sensor                         0.00 -        0.00 -        0.00 -      
___________________________________________________________

[hassmaschine]

It says the errors aren't currently present (nicht vorhanden). Clear the codes and see which ones stay away.

[daz215]

Thanks man, I managed to get DIS working last night so I will use that to reset it in the morning!

[daz215]

More codes now! really hoping its the Nox sensor at this point. will get one ordered ASAP

[daz215]

Just for some closure to people with these codes (I've had a fair few PM's)

In the end it was down to the injectors. My dealer replaced all 6 at good cost and also wanted to do the knox sensor while they where at it. Becuase I wanted the 2 year warrenty I was obliged to have it done.

If you want to save a bit of money then I'd recomend a specialist to replace your injectors. The knox sensor is there to alter fueling to suit emissions.

I paid 400GBP for the knox sensor alone without fitting so its well worth a punt. If theres still an issue then you can always replace it after.