Audi A4


Audi A4 (AEB) Oxygen Sensor Heater after Catalytic Converter, Checking

Audi A4 (AEB) Oxygen Sensor Heater after Catalytic Converter, Checking

Oxygen Sensor Heater after Catalytic Converter, Checking Audi A4 Note When servicing terminals in harness connector of Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130 , use only gold-plated terminals. Special tools and workshop equipment required Multimeter . Wiring diagram. Test requirements Fuse S229 OK. Battery voltage at least 12.5 volts. All electrical consumers such as, lights and rear window defroster, switched off. Vehicles with automatic trans..

Audi A4 (AEB) Oxygen Sensor Heater, Checking

Audi A4 (AEB) Oxygen Sensor Heater, Checking

Oxygen Sensor Heater, Checking Audi A4 Note When servicing terminals in harness connector of Heated Oxygen Sensor (HO2S) G39 , use only gold-plated terminals. Special tools and workshop equipment required Multimeter . Wiring diagram. Test requirements Fuse S229 OK. Battery voltage at least 12.5 volts. All electrical consumers such as, lights and rear window defroster, switched off. Vehicles with automatic transmission, shift selector lever into liition “P” or “N”. A/C sw..

Audi A4 (AEB) Power Output Stage and Ignition Coil, Checking

Audi A4 (AEB) Power Output Stage and Ignition Coil, Checking

Power Output Stage and Ignition Coil, Checking Audi A4 The following procedure is used to diagnose Power Output Stage N122 and Ignition Coils N, N128, N158, N163 . Special tools and workshop equipment required Multimeter . Diode test lamp . Wiring diagram. Test requirements The Motronic Engine Control Module (ECM) J220 fuses OK. Fuse S232 OK. Battery voltage at least 12.5 volts. All electrical consumers such as, lights and rear window defroster, switched off. Vehi..

Audi A4 (AEB) Readiness Code

Audi A4 (AEB) Readiness Code

Readiness Code Audi A4 Diagnostics are performed at regular intervals during normal vehicle operation. After repairing an emissions related system, a readiness code is generated by road testing the vehicle.If a malfunction is recognized during the drive cycle, it will be stored in the DTC memory. The OBD drive cycle operation will be monitored with a hand held diagnostic tool. Consult the manufacturer's instruction manual for correct tool operation.The readiness code is erased every time th..

Audi A4 (AEB) SAE P0xxx DTCs

Audi A4 (AEB) SAE P0xxx DTCs

SAE P0xxx DTCs Audi A4 For additional Monitor Strategy information. Refer to Bosch Motronic ME 5.9 OBD System Strategy document .Fuel and air ratios DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum P0102 Mass or Volume Air Flow Circuit Low Input Check the Mass Air Flow (MAF) Sensor G70 . Refer to Go to article . Lower threshold (depending on eng..

Audi A4 (AEB) SAE P1xxx DTCs

Audi A4 (AEB) SAE P1xxx DTCs

SAE P1xxx DTCs Audi A4 Fuel and air ratios DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum P1102 HO2S Heater Control Circuit (Bank 1 Sensor 1) High Check the Oxygen Sensor (O2S) Heater Z19 . Refer to Go to article . Short to battery +< 4.8 Ohm Sensor heater on – 140 Seconds. 5 Seconds 2 DCY P1105 HO2S Heater Control Circuit (Bank 1 Sensor 2) ..

Audi A4 (AEB) SAE P2xxx DTCs

Audi A4 (AEB) SAE P2xxx DTCs

SAE P2xxx DTCs Audi A4 DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum P2097 Bank 1, oxygen sensor correction behind cat. Rich control limit exceeded Check the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130 . Refer to Go to article . Comparison of stored value with active level –Switch off and U < 2VSwitch on and U > 6V Batt..

Audi A4 (AEB) SAE P3xxx DTCs

Audi A4 (AEB) SAE P3xxx DTCs

SAE P3xxx DTCs Audi A4 DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum P3081 Engine Temperature Too Low Check the Engine Coolant Temperature (ECT) Gauge Sensor G2 . Refer to Go to article . Measured temperature >9.75 K lower than model temperature measured temperature < 59.5 °C --- Once/DCY 2 DCY ..

Audi A4 (AEB) Safety Precautions

Audi A4 (AEB) Safety Precautions

Safety Precautions Audi A4 Caution Observe the following for all installations, especially in engine compartment due to lack of room: Route lines of all types (e.g. for fuel, hydraulic, EVAP canister system, coolant and refrigerant, brake fluid, vacuum) and electrical wiring so that the original path is followed. Watch for sufficient clearance to all moving or hot components. If special testing equipment is required during road test, note the following: WARNING Test equipment must always ..

Audi A4 (AEB) Safety Precautions

Audi A4 (AEB) Safety Precautions

Safety Precautions Audi A4 To reduce the risk of personal injury and/or damage to the fuel injection and ignition system. Note the following: Caution The fuel system is pressurized. Before loosening hose connections or opening the test connection (to measure fuel pressure), place a cloth around the connection. Then release pressure by carefully loosening the connection. Always switch off ignition before disconnecting or connecting lines of the fuel injection and ignition system, including te..




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