Few error codes on the A4

[rbdazza]

So last week i got the dreaded MIL, car still drove perfectly fine. Before i start a google session on them i thought i'd post them up on here to see if anyone has come across them before:

These all came under "Engine malfunction"

3 Faults Found:
5368 - Relay for Low Heater Output 
          P302C 00 [047] - Short to Ground
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 243865 km
                    Date: 2017.02.24
                    Time: 11:58:17

                    Engine speed: 0.00 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 29 °C
                    Intake air temperature: 13 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 11.740 V
                    Unlearning counter according OBD: 40
                    Electric auxiliary heater: shut-off conditions-Bit 0: 00000000 
                    Electric auxiliary heater: shut-off conditions-Bit 8: 00000000 
                    Electric auxiliary heater: relay activation-Bit 0: 00000000 
                    Preheat time: 0 ms
                    Glow status-Bit 0: 00000000 
                    Glow status-Bit 8: 00000000 
                    Ambient temperature: 3.7 °C
                    Fuel temperature: 29.2 °C
                    Eng Da ti Eng Off CAN: 0 s

5380 - Valve for Air Filter Bypass Flap (N275) 
          P1016 00 [047] - Open Circuit
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 243865 km
                    Date: 2017.02.24
                    Time: 11:58:16

                    Engine speed: 0.00 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 29 °C
                    Intake air temperature: 13 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 11.720 V
                    Unlearning counter according OBD: 40
                    Air mass: specified value: 799.5 mg/stroke
                    Coolant temperature at radiator outlet: actual value: 14.1 °C
                    Ct T t Diff Radiator: -273.1 °C
                    Ambient temperature: 3.7 °C
                    Coolant fan 2: activation: 0.00 %
                    Coolant fan 1: activation: 10.20 %
                    Fuel temperature: 29.2 °C

7859 - Intake Manifold Flap Position Sensor (Bank 1) 
          P2015 00 [168] - Implausible Signal
          MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 25
                    Mileage: 249912 km
                    Date: 2017.05.04
                    Time: 08:55:32

                    Engine speed: 0.00 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 72 °C
                    Intake air temperature: 15 °C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 13.220 V
                    Unlearning counter according OBD: 40
                    Actual air mass: 0.0 mg/stroke
                    Intake manifold Runner Control (IMRC): activation: 100.00 %
                    Intake manifold Runner Control (IMRC): acknowledgment: 100.55 %
                    V Sw Vlv r Drft Clsd mp: 2.82 %
                    V Sw Vlv r Drft Opn mp: 11.93 %
                    V Sw Vlv st Mon-Bit 0: 00000000 
                    V Sw Vlv st Mon-Bit 16: 00000000 
                    V Sw Vlv st Mon-Bit 24: 00110111 
                    V Sw Vlv st Mon-Bit 8: 00000010 
                    V Sw Vlv u Raw: 0.0 mV

Readiness: 1 1 0 0 1 

 

And this one under "Address 05: Acc/Start Auth"

 

1 Fault Found:
00446 - Function Limitation due to Under-Voltage 
            002 - Lower Limit Exceeded - Intermittent
             Freeze Frame:
                    Fault Status: 00100010
                    Fault Priority: 2
                    Fault Frequency: 2
                    Reset counter: 209
                    Mileage: 246421 km
                    Time Indication: 0
                    Date: 2017.03.29
                    Time: 23:19:39

 

and finally these:

Address 53: Parking Brake (J540)       Labels: 8K0-907-801-V1.clb
   Part No SW: 8K0 907 801 H    HW: 8K0 907 801 H
   Component: EPB Audi B8   H09 0090  
   Revision: 00000003    Serial number: 10000000258090
   Shop #: WSC 00000 000 00000
   VCID: 3463E4EA9773BAE13D-8060

1 Fault Found:
00532 - Supply Voltage B+ 
            002 - Lower Limit Exceeded - Intermittent
             Freeze Frame:
                    Fault Status: 00100010
                    Fault Priority: 1
                    Fault Frequency: 1
                    Reset counter: 108
                    Mileage: 246421 km
                    Time Indication: 0
                    Date: 2017.03.29
                    Time: 23:20:35

             Freeze Frame:
                    Voltage: 8.30 V
                    Count: 44
                    Speed: 0.0 km/h
                    Hex Value: 0x0163
                    Hex Value: 0x0008

 

Address 46: Central Conv. (J393)       Labels: 8K0-907-064-46.clb
   Part No SW: 8K0 907 064 DP    HW: 8K0 907 064 DP
   Component: BCM2 1.1      H02 0321  
   Revision: 00002001    Serial number: 0119083986    
   Coding: 013B0622203904400020020400000000
   Shop #: WSC 06335 000 00000
   VCID: 010D7D3E9841DF49E6-8054

   Subsystem 1 - Part No: 8K0 951 177 
   Component: DWA-Sensor  H02 0040 

   Subsystem 2 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H03 1301 

3 Faults Found:
02615 - Fuel Tank Cap; Lock 
            009 - Open or Short to Ground
             Freeze Frame:
                    Fault Status: 01101001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 61
                    Mileage: 243865 km
                    Time Indication: 0
                    Date: 2017.02.24
                    Time: 12:00:02

02616 - Fuel Tank Cap; Unlock 
            009 - Open or Short to Ground
             Freeze Frame:
                    Fault Status: 01101001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 61
                    Mileage: 243865 km
                    Time Indication: 0
                    Date: 2017.02.24
                    Time: 12:00:02

00532 - Supply Voltage B+ 
            002 - Lower Limit Exceeded - Intermittent
             Freeze Frame:
                    Fault Status: 00100010
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 209
                    Mileage: 246421 km
                    Time Indication: 0
                    Date: 2017.03.29
                    Time: 23:20:37

[rbdazza]

The fuel cap does not lock btw which i can live with , i'm not sure what short to ground means though, would that cause potential battery drain? 

[Audi Owners Club.]

Hi Darren, the only thing that jumped out to me throughout the whole of the list was the battery/supply voltage.

If the battery is old and in need of replacement this can lead to a residual drain and I would probably start there....sounds just like Jaguars when the battery goes weak, comes up with all sorts of spurious faults.

Let us know what you find out once you've rectified whatever it is you find to be at fault.

Cheers,  Trevor

[rbdazza]

hmm, batteries aint cheap! but then considering its stop/start you could be on to something. i need to borrow a volt meter as i dont have on and see what the battery is looking like both off and under load. 

i'll also get the hidden battery indicator in MMi later to see how it is looking in there.

[Audi Owners Club.]

Only thing I would suggest is to get a quality battery as opposed to a budget one as it will make a huge difference overall.

Off load, should be around 12.8 volts (resting) and under load around 14.8 volts and then see what it does with cranking over with the headlights on (how dim do they go and how quick do the volts drop)

Let us know how you get on with Darren

[rbdazza]

Will do. and yes a good battery is worth the extra dosh, looking at around £250 !! 

[Audi Owners Club.]

a decent battery should only cost around £70 - £80 (Varta, Exide, etc)

[rbdazza]

usually yes, but one that is rated for stop/start costs a lot more, from what i can see

[SteveSE]

On audi's with stop start they are the Gel batterys or AGM batterys.

I have seen them for about £200 from euro parts for the one in my A4 and slightly cheaper for the wives A1.

I'm no expert but its sonething to do with them being high ampage, being able to charge quick and hold that charge in alot longer than a standard battery so not going flat with all the stop start useage.