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  • 1111 (Blink Fault Code), 65535 VAG1551/2 Fault Code Number
    Engine Control Unit (ECU) Defective memory circuits,
    Incorrect Checksum for internal memory (EPROMs)
    (this can occur on some modified ECU’s) Check ECU ground connections, Check EPROM programming
    Symptom: Check engine light may come on
  • 1231 (Blink Fault Code), 00281 VAG1551/2 Fault Code Number (S4/S6 with AAN engine Only)
    Vehicle Speed Sensor (G68),
    Open circuit or short circuit, speed sensor malfunctioning
    Symptom: A/C compressor does not shut off during wide open throttle in 1st gear
  • 2111 (Blink Fault Code), 00513 VAG1551/2 Fault Code Number
    RPM sensor (G28)
    Open or short circuit, sensor malfunction
    Defective sensor & cables, metal fragments on flywheel teeth
    Symptom: Engine will not start, misfires, may stop running
  • 2112 (Blink Fault Code), 00514 VAG1551/2 Fault Code Number
    Timing reference sensor, (G4) (located 62 degrees BTDC)
    Sensor malfunction, Flywheel pin damaged/missing, Mis-located Sensor,
    distance to flywheel pin greater than 1.2mm (3/64 inch), wiring shielding problem for G4,
    hall sensor out of adjustment (3B and early AAN engines only)
    Symptom: Engine will not start, possible low power
    Fault code can occur after cranking the engine during a no start condition
  • 2113 (Blink Fault Code), 00515 VAG1551/2 Fault Code Number
    (G40) Hall sensor in distributor
    (3B, early AAN engines) or camshaft position Hall Effect sensor later S4/S6 AAN engine).
    Distributor alignment, faulty sender, Mis-located sensor & distributor, Cam timing possibly incorrect on AAN engine, Check lower Crankshaft Gear keyway
    Symptom: Engine will not start, power loss, check engine light may come on during driving above certain RPM
  • 2121 (Blink Fault Code), 00516 VAG1551/2 Fault Code Number
    Idle switch problem
    Switch open circuit, stuck closed Switch defective (Internal solder connections intermittent) or wiring problem
  • 2141 (Blink Fault Code), 00535 VAG1551/2 Fault Code Number
    Knock regulator #1
    Excessive knock, timing is being retarded by maximum amount,
    Symptom: Low boost on 20V, Fuel octane too low, Excessive Compression, excessive boost
  • 2142 (Blink Fault Code), 00524 VAG1551/2 Fault Code Number
    Knock sensor #1 (G61)
    Open or short circuit, Defective sensor Check sensor and wiring
    Symptom: Timing retarded, High fuel consumption, power loss, Boost pressure not attained
  • 2143 (Blink Fault Code),00536 VAG1551/2 Fault Code Number
    Knock sensor #2, (Cylinders 3, 4, 5)
    Excessive knock, timing is being retarded by maximum amount.
    Symptom: Fuel octane too low, Excessive Compression, excessive boost
  • 2144 (Blink Fault Code), 00540 VAG1551/2 Fault Code Number
    Knock Sensor #2, (G66) (Cylinders 3, 4, 5)
    Open or short circuit, Defective sensor or wiring
    Symptom: Timing retarded, High fuel consumption, power loss, Boost pressure not attained