Engine code PG
Digifant I
Diagnostic Trouble code (DTC), troubleshooting table
  the following table lists all of the possible malfunctions recognized by the Digifant (J 169) and displayed on the VAG 1551 Scan Tool (with printer switched on while DTC memory is being read)
  if malfunctioning components are indicated, check wiring for short or open circuits using wiring diagram before replacing the components.
  DTC code and blink code are displayed in operating mode 1 "Rapid data transfer" only when the VAG 1551 printer is switched ON
Example:
Rapid Data Blink code Transfer code (if present) 65535               1111
VAG 1551 printer display
Possible cause
Corrective step
00000 4444 No malfunction recognized!
__
_
00518 2212
Throttle position sensor - (G69)
No signal
(G 69) Malfunctioning
Check (G 69), => Repair Group 24 Break in wiring/short
Fuel and Ignition 01-19
Examplo:
Rapid Data Blink code Transfer code (if present) 65535              1111
VAG 1551 printer display
Possible cause
Corrective step
00519 2222 Manifold absolute pressure sensor (G71) No signal
Vacuum line to Digifant ECM (J 169) Sensor (G 71) inside of ECM (J 169) malfunctioning
Check (G 71) Repair Group 24
00521 2242
CO Fuel Trim Potentiometer (G74)
No signal
(G 74) malfunctioning Open circuit in wiring
Check (G 74), Repair Group 24
00522 2312
Engine coolant temperature sensor(G 62)
Break in wiring/short circuit to positive
(G 62) malfunctioning Open circuit in wiring
Check (G 62), => Repair Group 24
00523 2322
Intake air temperature sensor (G42)
No signal
(G 42) malfunctioning in CO fuel trim potentiometer
Open or short circuit in wiring
Check (G 42), => Repair Group 24
00525 2342
Oxygen sensor (G 39)
No signal
(G 39) malfunctioning Open circuit in wiring
Check Oxygen sensor and Oxygen sensor control, => Repair Group 24
Fuel and Ignition 01-20
Example:
Rapid Data Blink code Transfer code (if present) 65535               1111
VAG 1551 printer display
Possible cause
Corrective step
00535 2141*
First knock sensor regulator
Regulator limit exceeded
Open circuit or short in the sensor wire
Knock sensor (G 61) malfunctioning
No knock recognition from Digifant control unit (J 169)
Check wires, page 01-61, test step 15 Replace (G 61) => Repair Group 28 Replace (J 169) => Repair Group 28
00537 2341
Oxygen sensor control limit exceeded
Fuel tank empty
CO content not within specified range
CO content too high CO content too low
Erase DTC memory, => page 01-15
Check CO content, and idle speed, => Repair Group 24
Check exhaust system sealing between exhaust manifold and Oxygen sensor => Repair Group 26 Oxygen sensor short circuit to ground - Repair Group 24 Check EVAP Canister Purge Regulator valve, => Repair Group 20
Check intake system for sealing, => Repair Group 24 Oxygen sensor short circuit to positive (+), => Repair Group 24
*Fault indicator lamp will display 2142 during blinkcode output
Fuel and Ignition 01-21
Example:
Rapid Data Blink code Transfer code (if present) 65535               1111
VAG 1551 printer display
Possible cause
Corrective step
01249 4411
Cylinder 1 injector (N 30) malfunctioning
Open circuit in wiring for fuel injector (N 30) Fuel injector for cylinders 1, 2, 3 or 4 malfunctioning
Check wiring using Test step 6, page 01-59 Check injectors, => Repair Group 24
65535 1111
ECM malfunctioning
Replace ECM (J 169), => Repair Group 24
Fuel and Ignition 01-22