Evening all,

I'm hoping someone can shed some light on this...

The car is an A7 - 242ps (180kw) 7 speed quattro. The DPF light came on towards the end (thankfully) of an 800 odd mile round trip. The light was on for around a minute, then went out, the heater plug light came on and the car went into limp mode. Fortunately, I was only around 10 miles from home, so I decided to carry on.

I've had the car scanned with VCDS and it's coming up with the following..

4 Faults Found:
5188 - Diesel Particle Filter
P2463 00 [237] - Excessive Soot Accumulation
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 2

Engine speed: 2259.00 /min
Normed load value: 99.6 %
Vehicle speed: 69 km/h
Coolant temperature: 90 °C
Intake air temperature: 34 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 14.120 V
Unlearning counter according OBD: 40
P Flt Ld fac Ash Cor: 0.9310
Particul.filter diff.pressure: 140 hPa
Exh t Adap T Oxi Cat Ds: 285.8 °C
Exh t Adap TP Flt Ds: 273.5 °C
Exhaust gas jet volume in particle filter: 300.5 m³/h
Current operating mode_2-Bits 0-7: 0
Current operating mode_2-Bits 0-7: 0
Current operating mode_2-Bits 0-7: 0
Current operating mode_2-Bits 0-7: 1


18660 - Start interruption due to insufficient engine speed
P151D 00 [032] - -
Intermittent - Not Confirmed - Tested Since Memory Clear


5118 - Oxygen (Lambda) Sensor B1 S1
P2195 00 [101] - Signal too Low (Lean)
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1

Engine speed: 1302.00 /min
Normed load value: 99.6 %
Vehicle speed: 68 km/h
Coolant temperature: 89 °C
Intake air temperature: 20 °C
Ambient air pressure: 980 mbar
Voltage terminal 30: 14.160 V
Unlearning counter according OBD: 40
Air mass: actual value (mg/stroke): 232.5 mg/stroke
Mean injection quantity: 15.45 mg/stroke
Oxygen sensor 1 Bank 1: Status Calibration O2-Signal-Bits 0-7: 1
O2 sensor 1: bank 1: voltage raw value O2 signal: 683.2 mV
O2 sensor 1 bank 1: voltage reading Ri-signal: filtered.: 1000.2 mV
O2 sensor 1 bank 1: duty cycle O2 heater: 42.92 %
LSU r O2 Adap 0: 0.12154


5189 - Particulate Trap Bank 1
P2002 00 [109] - Efficiency Below Threshold
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 2

Engine speed: 2259.00 /min
Normed load value: 99.6 %
Vehicle speed: 69 km/h
Coolant temperature: 90 °C
Intake air temperature: 34 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 14.120 V
Unlearning counter according OBD: 40
Ambient temperature: 13.3 °C
Particle filter: offset for differential press.: 0 hPa
Particle filter: soot mass measured: 37.31 g
Particle filter: soot mass calculated: 28.19 g
Particle filter: kilometers since last regeneration: 778877 m
Particle filter field regeneration: cancel conditions-Bits 0-7: 0
Particle filter field regeneration: cancel conditions-Bits 0-7: 0


Readiness: 1 1 0 0 0


Looking at the soot values, I wouldn't have thought that they were that high (assuming they are correct)? I'm inclined to think that a sensor has gone down, possibly the pressure sensor.

Any advice gratefully received..