Audi 20V Turbo 5 cylinder ECU Fault Codes

by Darin | Feb 16, 2012 | 200 20V FAQ, C4 UrS4/S6 FAQ, RS2 FAQ

• 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
• 2212 (Blink Fault Code), 00518 VAG1551/2 Fault Code Number
  Throttle potentiometer,
  short circuit to + or to ground,moisture or corrosion in harness connector
  Check throttle potentiometer resistance from idle to full throttle.
  Symptom: Lack of power or boost pressure is not attained
• 2214 (Blink Fault Code), 00543 VAG1551/2 Fault Code Number
  Engine Over-revved
  Engine has exceeded rev limit 7440 RPM on 20V engine) Driver has heavy right foot.
• 2221 (Blink Fault Code), 00575 VAG1551/2 Fault Code Number for 3B 20V Turbo engine ONLY
  Manifold Pressure too low, or too high, control difference.
  Vacuum hose to ECU pressure sensor Vacuum hose missing or leaking, Check hose
  Symptom: Loss of Power
• 2222 (Blink Fault Code), 00519 VAG1551/2 Fault Code Number
  ECU Internal Pressure sensor (G71)
  Pressure sensor defective,
  Repair or replace ECU or replace internal pressure sensor
• 2223 (Blink Fault Code), 00528 VAG1551/2 Fault Code Number
  Altitude Sensor (F96)
  Break in wiring or short to + or ground Symptom:
  Symptom: Loss of power, boost pressure is not attainable
• 2224 (Blink Fault Code), 00544 VAG1551/2 Fault Code Number
  Maximum Charge Pressure Exceeded,
  Intake air leak after turbocharger, ECU Vacuum/pressure line has leak between intake manifold
  Waste gate or pressure hose, Waste Gate Solenoid/hose problem, ECU pressure sensor malfunction
  Symptom: Misfire during wide open throttle, boost pressure too high
• 2231 (Blink Fault Code), 00533 VAG1551/2 Fault Code Number
  Idle Speed Control Valve (N71)
  Idle speed adaptation maximum limit exceeded or Minimum adaptation limit not reached
  Sticky or binding ISV, Mass Air Flow Meter (G70) offset, additional air introduced between G70 and N71
  Symptom: Idle speed too low, or too high, Add air leak.
• 2234 (Blink Fault Code), 00532 VAG1551/2 Fault Code Number
  Supply Voltage Problem, ECU (J220) supply voltage too low or too high
  Poor ECU ground connection at intake manifold, battery discharged, check battery current drain with engine off
• 2241 (Blink Fault Code), 00538 VAG1551/2 Fault Code Number (3B 20V Turbo Engine Only)
  Second Knock Sensor, (G61)
  Excessive knock, maximum control limit exceeded,
  open circuit in signal wire from G28 engine speed sensor or G4 ignition timing sensor or G28 and G4 are reverse connected to ECU (J220), Fuel Octane too low, Abnormal Engine noises, Open circuit in knock sensor shielding (G61)
  Symptom: low boost, Moderate power loss, higher fuel consumption, top speed not attainable
• 2312 (Blink Fault Code), 00522 VAG1551/2 Fault Code Number
  Coolant sensor (G62)
  Open or short circuit, Defective sensor or wiring, high resistance between sensor G62 and ECU J220
  Symptom: Cold starting difficulties at low temperatures, Poor idle and acceleration during warm up
• 2322 (Blink Fault Code), 00523 VAG1551/2 Fault Code Number
  Inlet air temp sensor (G42)
  Open or short circuit, Defective sensor or wiring
  Symptom: Slight power loss, Increase in fuel consumption
• 2324 (Blink Fault Code), 00553 VAG1551/2 Fault Code Number
  Mass Air Flow (MAF) Sensor (G70)
  Open or short circuit, defective sensor, Signal too low or too high, Open circuit between G70 and ECU J220, Voltage supply interrupted or short to ground
  Symptom: system in limp home mode, very poor performance and acceleration, difficult to accelerate
• 2341 (Blink Fault Code), 00537 VAG1551/2 Fault Code Number
  Oxygen Sensor Control Limit exceeded,
  fuel pressure too low or too high, intake or exhaust leak, defective ignition system component, intake air leak after air mass sensor, O2 sensor is faulty
  Symptom: CO before catalyst is below 0.3% or greater than 1.0%, Extremely lean or overly rich exhaust, Spark Plug fouling
• 2342 (Blink Fault Code), 00525 VAG1551/2 Fault Code Number
  Oxygen Sensor (G39)
  Sensor Wiring or Sensor defective Heat resistor in sensor defective, Signal wiring shorted to ground, Fuel tank empty, Ignition system component failure, air leak at mass air flow sensor, air leak in exhaust pipe before catalyst, poor ECU ground wire connection at intake manifold.
  Symptom: Emissions not within specifications, increased fuel consumption, rich exhaust, spark plug fouling,
  Carbon Monoxide (CO) percentage above 3%,
• 2413 (Blink Fault Code), 00561 VAG1551/2 Fault Code Number
  Mixture Adjustment,
  Adaptation limit exceeded, Adaptation limit not reached, Leakage in exhaust system before 3 Way catalytic converters, Incorrect signal for Mass Air Flow Sensor, Spark plugs, ignition coil(s), or Ignition Coil Power output stage malfunctioning
  Symptom: Rich mixture, increased fuel consumption
• 3424 (Blink Fault Code), 00824 VAG1551/2 Fault Code Number (3B 20V Turbo Engine Only)
  Fault Lamp Trigger Defective, short to + or to ground
  Symptom: “Check” engine light on dash does not light up with ignition on
• 4343 (Blink Fault Code), 01247 VAG1551/2 Fault Code Number
  Carbon Canister Solenoid, Evaporative Canister Purge Valve (N80),
  Open or short circuit, +12V supply circuit breaker or fuse open?
  Symptom: Poor response in part of load range, fuel odors, idle speed or quality may be affected
• 4411 (Blink Fault Code), 01249 VAG1551/2 Fault Code Number
  Fuel Injector for Cylinder 1, (N30)
  Open or short circuit, +12V supply circuit breaker or fuse open
  Symptom: Engine runs rough or stalls
• 4412, (Blink Fault Code) 01250 VAG1551/2 Fault Code Number
  Fuel Injector for Cylinder 2, (N31)
  Open or short circuit, +12V supply circuit breaker or fuse open
  Symptom: Engine runs rough or stalls
• 4413, (Blink Fault Code) 01251 VAG1551/2 Fault Code Number
  Fuel Injector for Cylinder 3, (N32)
  Open or short circuit, +12V supply circuit breaker or fuse open
  Symptom: Engine runs rough or stalls
• 4414, (Blink Fault Code) 01252 VAG1551/2 Fault Code Number
  Fuel Injector for Cylinder 4, (N33)
  Open or short circuit, +12V supply circuit breaker or fuse open
  Symptom: Engine runs rough or stalls
• 4421, (Blink Fault Code) 01253 VAG1551/2 Fault Code Number
  Fuel Injector for Cylinder 5,
  Open or short circuit, +12V supply circuit breaker or fuse open
  Symptom: Engine runs rough or stalls
• 4431, (Blink Fault Code) 01257 VAG1551/2 Fault Code Number
  Idle Stabilizer Valve solenoid, (N71)
  Open or short circuit, check circuit breaker or fuse for +12V supply
  Symptom: Engine speed out of range, Engine might die when cold, Engine runs rough or has flat spot,
  Note: When in limp home Mode, idle speed is between 1100 and 1200 RPM
• 4442, (Blink Fault Code) 01262 VAG1551/2 Fault Code Number
  Waste Gate Frequency Valve, (N75)
  Open or short circuit, sticking valve, malfunctioning valve
  Symptom: Boost pressure too high or too low, Severe misfiring during full throttle due to high boost
• 4444, (Blink Fault Code) 00000 VAG1551/2 Fault Code Number
  No Faults have been recorded.
• 0000, (Blink Fault Code) 00000 VAG1551/2 Fault Code Number
  End of Diagnostic Output