| 96-04 2.3 Liter Engine Code: AGL |
|---|
| VAG type | Fault location | Probable cause |
| 00000 | No fault found | – |
| 81002 | Engine coolant temperature (ECT) sensor -short circuit | Wiring short circuit, ECT sensor |
| 81003 | Engine coolant temperature (ECT) sensor -broken wire | Wiring open/short circuit, poor connection, ECT sensor |
| 81004 | Engine coolant temperature (ECT) sensor -range/ performance problem | ECT defective, ECM |
| 81005 | Engine coolant temperature (ECT) sensor -loose connection | Wiring, multi-plug, ECT sensor |
| 81006 | lntake air temperature (lAT) sensor -short circuit | Wiring short circuit, lAT sensor |
| 81007 | lntake air temperature (lAT) sensor -broken wire | Wiring open/short circuit, poor connection, lAT sensor |
| 81008 | lntake air temperature (lAT) sensor -loose connection | Wiring, multi-plug, lAT sensor |
| 81009 | Manifold absolute pressure (MAP) sensor -range | Hoses blockedlleaking, ECM performance problem |
| 81010 | Manifold absolute pressure (MAP) sensor -no signal | Hoses interchanged/not connected, ECM |
| 81011 | Closed throttle position (CTP) switch -switch contacts | Wiring short circuit, CTP switch always closed |
| 81012 | Closed throttle position (CTP) switch -loose connection | Wiring, multi-plug, CTP switch |
| 81068 | Closed throttle position (CTP) switch -switch contacts | Wiring open circuit, throttle valve tight/sticking, always open ISC actuator, CTP switch |
| 81013 | Throttle position (TP) sensor -high input | Wiring short to positive, TP sensor |
| 81014 | Throttle position (TP) sensor -low input | Wiring short to earth, TP sensor |
| 81015 | Throttle position (TP) sensor -loose connection | Wiring, multi-plug, TP sensor |
| 81016 | ldle speed control (ISC) actuator position sensor | Wiring short to positive, ISC actuator position high input sensor |
| 81017 | ldle speed control (!SC) actuator position sensor | Wiring short to earth, ISC actuator position sensor low input |
| 81018 | ldle speed control (ISC) actuator position sensor -loose connection | Wiring, multi-plug, ISC actuator position sensor |
| 81019 | ldling control -lower limit reached | lntake leak |
| 81020 | ldling control -upper limit reached | ISC actuator/position sensor |
| 81021 | ldling control -limp-home mode | ISC actuator/position sensor, intake leak |
| 81022 | Heated oxygen sensor (H02S) -high voltage | Wiring short to positive, H02S |
| 81023 | Heated oxygen sensor (H02S) -broken wire | Wiring open circuit, H02S |
| 81024 | Heated oxygen sensor (H02S) -range/performance | H02S problem |
| 81025 | Heated oxygen sensor (H02S) -heater short ta earth | Wiring short to earth, H02S |
| 81026 | Heated oxygen sensor (H02S) -heater short ta positive | Wiring short to positive, H02S |
| 81027 | Heated oxygen sensor (H02S) -broken wire | Wiring open circuit, H02S |
| 81028 | Lambda regulation -control limit exceeded | Fuel pressure/pump, ignition system, intake/ exhaust leak, injector(s), H02S, EVAP canister purge valve |
| 81029 | Heated oxygen sensor (H02S) -lambda control limit not reached | Fuel pressure, ignition system, intake/exhaust leak, injector(s), H02S/heating, EVAP canister purge valve |
| 81030 | lnjectors 1 & 4 -short to positive | Wiring short to positive, injector |
| 81031 | lnjectors 1 & 4 -open circuit/short to earth | Wiring open circuit/short to earth, injector |
| 81032 | lnjectors 2 & 3 -short to positive | Wiring short to positive, injector |
| 81033 | lnjectors 2 & 3 -open circuiut/short to earth | Wiring open circuit/short to earth, injector |
| 81034 | Mixture control (MC), idling -too rich | Fuel pressure, ignition system, injector(s), H02S/ heating, exhaust leak, EVAP canister purge valve |
| 81035 | Mixture control (MC), idling -too lean | Fuel pressure, ignition system, intake leak, injector(s), H02S/heating, exhaust leak |
| 81036 | Mixture control (MC), partial load -too rich | Fuel pressure, ignition system, injector(s), H02S/ heating, exhaust leak, EVAP canister purge valve |
| 81037 | Mixture control (MC), partial load -too lean | Fuel pressure, ignition system, intake leak, injector(s), H02S/heating, exhaust leak |
| 81038 | Ignition coil/amplifier, cylinders 1 & 4 -short to positive | Wiring, ignition coil/amplifier |
| 81039 | Ignition coil/amplifier, cylinders 1 & 4 -ignition failure | Poor connection, wiring, HT lead, spark plugs, ignition coil/amplifier |
| 81040 | Ignition coil/amplifier, cylinders 1 & 4 -current too low | Wiring short to earth, ignition coil/amplifier |
| 81041 | Ignition coil/amplifier, cylinders 2 & 3 -short to positive | Wiring, ignition coil/amplifier |
| 81042 | Ignition coil/amplifier, cylinders 2 & 3 -ignition failure | Poor connection, wiring, HT lead, spark plugs, ignition coil/amplifier |
| 81043 | Ignition coil/amplifier, cylinders 2 & 3 -current too low | Wiring short to earth, ignition coil/amplifier |
| 81044 | Crankshaft position (CKP) sensor/engine speed (RPM) -no signal/implausible signal | Wiring, air gap, metal particles, insecure sensor/ sensor, CKP/RPM sensor |
| 81045 | Crankshaft position (CKP) sensor/engine speed (RPM) | Air gap, metal particles sensor |
| 81046 | Crankshaft position (CKP) sensor/engine speed (RPM) -engine RPM implausible | Air gap, metal particles sensor |
| 81047 | Engine control module (ECM), Module coding plug short to earth | Module coding plug short to earth |
| 81048 | Engine control module (ECM), Module coding plug short to positive | Module coding plug short to positive |
| 81049 | Crankshaft position (CKP) sensor/engine speed (RPM) sensor -signal short to earth | ECM, Wiring short to earth |
| 81050 | Crankshaft position (CKP) sensor/engine speed (RPM) sensor -signal short to positive | ECM, Wiring short to earth |
| 81051 | Vehicle speed sensor (VSS) -no signal | Vehicle speedometer, wiring open circuit, VSS |
| 81052 | Vehicle speed sensor (VSS) -implausible signal | Wiring, VSS |
| 81055 | Fuel pump relay -open circuit/short to positive | Wiring open circuit/short to positive, fuel pump relay |
| 81056 | Fuel pump relay -open circuit/short to earth | Wiring open circuit/short to earth, fuel pump relay |
| 81059 | Evaporative emission (EVAP) canister purge valve -open circuit/short to positive | Wiring open circuit/short to positive, fuel pump relay, EVAP canister purge valve |
| 81060 | Evaporative emission (EVAP) canister purge valve -open circuit/short to earth | Wiring open circuit/short to earth, fuel pump relay, EVAP canister purge valve |
| 81061 | Mixture control (MC) -limit exceeded | Battery, wiring |
| 81063 | Engine control module (ECM) -supply voltage low | Wiring short to positive, exhaust brake solenoid |
| 81069 | Exhaust brake solenoid -short to positive | Wiring open circuit/short to earth, exhaust brake solenoid |
| 81070 | Exhaust brake solenoid -open circuit/short to earth | Instrumentation control module incorrectly coded |
| 81071 | Vehicle speed sensor (VSS) -speed deviation too large | Instrumentation control module incorrectly coded |
| 81072 | Vehicle speed sensor (VSS) -implausible signal | Wiring, vehicle speedometer, VSS |
