Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1998 Audi A4 AvantFACTORY OEM SERVICE PROCEDURE
Engine Controls DTCS (2.8L)
ENGINE CONTROLS DTCS (2.8L)
| Generic Scan Tool Code | VAG 1551 Code | Malfunction/Affected Sensor Or Circuit | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| P0102(1) | (1) 16486 | MAF Circuit Low Input | ||||||||
| P0103(1) | (1) 16487 | MAF Circuit High Input | ||||||||
| P0112(1) | (1) 16496 | Intake Air Temperature Circuit Low Input | ||||||||
| P0113(1) | (1) 16497 | Intake Air Temperature Circuit High Input | ||||||||
| P0116(1) | (1) 16500 | ECT Circuit Range/Performance Problem | ||||||||
| P0117(1) | (1) 16501 | ECT Circuit Low Input | ||||||||
| P0118(1) | (1) 16502 | ECT Circuit High Input | ||||||||
| P0121(1) | (1) 16505 | TP Sensor Circuit Range/Performance Problem | ||||||||
| P0122(1) | (1) 16506 | TP Sensor Circuit Low Input | ||||||||
| P0123(1) | (1) 16507 | TP Sensor Circuit High Input | ||||||||
| P0130(1) | (1) 16514 | HO2S Circuit Malfunction (Bank 1, Sensor 1) | ||||||||
| P0131(1) | (1) 16515 | HO2S Circuit Low Voltage (Bank 1, Sensor 1) | ||||||||
| P0132(1) | (1) 16516 | HO2S Circuit High Voltage (Bank 1, Sensor 1) | ||||||||
| P0133(1) | (1) 16517 | HO2S Circuit Slow Response (Bank 1, Sensor 1) | ||||||||
| P0134(1) | (1) 16518 | HO2S Circuit No Activity Detected (Bank 1, Sensor 1) | ||||||||
| P0136(1) | (1) 16520 | HO2S Circuit Malfunction (Bank 1, Sensor 2) | ||||||||
| P0137(1) | (1) 16521 | HO2S Circuit Low Voltage (Bank 1, Sensor 2) | ||||||||
| P0138(1) | (1) 16522 | HO2S Circuit High Voltage (Bank 1, Sensor 2) | ||||||||
| P0140(1) | (1) 16524 | HO2S Circuit No Activity Detected (Bank 1, Sensor 2) | ||||||||
| P0150(1) | (1) 16534 | HO2S Circuit Malfunction (Bank 2, Sensor 1) | ||||||||
| P0151(1) | (1) 16535 | HO2S Circuit Low Voltage (Bank 2, Sensor 1) | ||||||||
| P0152(1) | (1) 16536 | HO2S Circuit High Voltage (Bank 2, Sensor 1) | ||||||||
| P0153(1) | (1) 16537 | HO2S Circuit Slow Response (Bank 2, Sensor 1) | ||||||||
| P0154(1) | (1) 16538 | HO2S Circuit No Activity Detected (Bank 2, Sensor 1) | ||||||||
| P0156(1) | (1) 16540 | HO2S Circuit Malfunction (Bank 2, Sensor 2) | ||||||||
| P0157(1) | (1) 16541 | HO2S Circuit Low Voltage (Bank 2, Sensor 2) | ||||||||
| P0158(1) | (1) 16542 | HO2S Circuit High Voltage (Bank 2, Sensor 2) | ||||||||
| P0159(1) | (1) 16542 | HO2S Circuit Slow Response (Bank 2, Sensor 2) | ||||||||
| P0160(1) | (1) 16544 | HO2S Circuit No Activity Detected (Bank 2, Sensor 2) | ||||||||
| P0300(2) | (2) 16684 | Random/Multiple Misfire Detected | ||||||||
| P0301(2) | (2) 16685 | Cylinder No. 1 Misfire Detected | ||||||||
| P0302(2) | (2) 16686 | Cylinder No. 2 Misfire Detected | ||||||||
| P0303(2) | (2) 16687 | Cylinder No. 3 Misfire Detected | ||||||||
| P0304(2) | (2) 16688 | Cylinder No. 4 Misfire Detected | ||||||||
| P0305(2) | (2) 16689 | Cylinder No. 5 Misfire Detected | ||||||||
| P0306(2) | (2) 16690 | Cylinder No. 6 Misfire Detected | ||||||||
| P0321(1) | (1) 16705 | Ignition Engine Speed Input Circuit Range/Performance | ||||||||
| P0322(3) | (3) 16706 | Ignition Engine Speed Input Circuit No Signal | ||||||||
| P0327(3) | (3) 16711 | Knock Sensor No. 1 Circuit Low Input | ||||||||
| P0328(3) | (3) 16712 | Knock Sensor No. 1 Circuit High Input | ||||||||
| P0332(3) | (3) 16716 | Knock Sensor No. 2 Circuit Low Input | ||||||||
| P0333(3) | (3) 16717 | Knock Sensor No. 2 Circuit High Input | ||||||||
| P0411(1) | (1) 16795 | Secondary Air Injection System Incorrect Flow Detected | ||||||||
| P0422(1) | (1) 16806 | Main Catalyst Efficiency Below Threshold (Bank 1) | ||||||||
| P0432(1) | (1) 16816 | Main Catalyst Efficiency Below Threshold (Bank 2) | ||||||||
| P0441(4) | (4) 16825 | EVAP Emission Control System Incorrect Purge Flow | ||||||||
| P0442(4) | (4) 16826 | EVAP Emission Control System Small Leak Detected | ||||||||
| P0455(4) | (4) 16839 | EVAP Emission Control System Gross Leak Detected | ||||||||
| P0501(1) | (1) 16885 | Vehicle Speed Sensor Range/Performance | ||||||||
| P0506(1) | (1) 16890 | Idle Control System RPM Lower Than Expected | ||||||||
| P0507(1) | (1) 16891 | Idle Control System RPM Higher Than Expected | ||||||||
| P0601(1) | (1) 16985 | Internal Controller Module Memory Check Sum Error | ||||||||
| P0604(1) | (1) 16988 | Internal Controller Module Memory RAM Error | ||||||||
| P1102(1) | (1) 17510 | HO2S Heater Circuit Short to B+ (Bank 1, Sensor 1) | ||||||||
| P1105(1) | (1) 17513 | HO2S Heater Circuit Short to B+ (Bank 1, Sensor 2) | ||||||||
| P1107(1) | (1) 17515 | HO2S Heater Circuit Short To B+ (Bank 2, Sensor 1) | ||||||||
| P1110(1) | (1) 17518 | HO2S Heater Circuit Short To B+ (Bank 2, Sensor 2) | ||||||||
| P1127(1) | (1) 17535 | Long Term Fuel Trim Multiplicative Too Rich (Bank 1) | ||||||||
| P1128(1) | (1) 17536 | Long Term Fuel Trim Multiplicative Too Lean (Bank 1) | ||||||||
| P1129(1) | (1) 17537 | Long Term Fuel Trim Multiplicative Too Rich (Bank 2) | ||||||||
| P1130(1) | (1) 17538 | Long Term Fuel Trim Multiplicative Too Lean (Bank 2) | ||||||||
| P1136(1) | (1) 17544 | Long Term Fuel Trim Additive Too Lean (Bank 1) | ||||||||
| P1137(1) | (1) 17545 | Long Term Fuel Trim Additive Too Rich (Bank 1) | ||||||||
| P1138(1) | (1) 17546 | Long Term Fuel Trim Additive Too Lean (Bank 2) | ||||||||
| P1139(1) | (1) 17547 | Long Term Fuel Trim Additive Too Rich (Bank 2) | ||||||||
| P1141(1) | (1) 17549 | Load Calculation Cross Check Range/Performance | ||||||||
| P1176(4) | (4) 17584 | O2 Correction Behind Catalyst B1 Limit Attained | ||||||||
| P1177(4) | (4) 17585 | O2 Correction Behind Catalyst B2 Limit Attained | ||||||||
| P1196(1) | (1) 17604 | O2 Sensor Heater Circuit Electrical Malfunction (Bank 1, Sensor 1) | ||||||||
| P1197(1) | (1) 17605 | O2 Sensor Heater Circuit Electrical Malfunction (Bank 2, Sensor 1) | ||||||||
| P1198(1) | (1) 17606 | O2 Sensor Heater Circuit Electrical Malfunction (Bank 1, Sensor 2) | ||||||||
| P1199(1) | (1) 17607 | O2 Sensor Heater Circuit Electrical Malfunction (Bank 2, Sensor 2) | ||||||||
| P1213(3) | (3) 17621 | Cylinder No. 1 Fuel Injector Circuit Short To B+ | ||||||||
| P1214(3) | (3) 17622 | Cylinder No. 2 Fuel Injector Circuit Short To B+ | ||||||||
| P1215(3) | (3) 17623 | Cylinder No. 3 Fuel Injector Circuit Short To B+ | ||||||||
| P1216(3) | (3) 17624 | Cylinder No. 4 Fuel Injector Circuit Short To B+ | ||||||||
| P1217(3) | (3) 17625 | Cylinder No. 5 Fuel Injector Circuit Short To B+ | ||||||||
| P1218(3) | (3) 17626 | Cylinder No. 6 Fuel Injector Circuit Short To B+ | ||||||||
| P1225(3) | (3) 17633 | Cylinder No. 1 Fuel Injector Circuit Short To Ground | ||||||||
| P1226(3) | (3) 17634 | Cylinder No. 2 Fuel Injector Circuit Short To Ground | ||||||||
| P1227(3) | (3) 17635 | Cylinder No. 3 Fuel Injector Circuit Short To Ground | ||||||||
| P1228(3) | (3) 17636 | Cylinder No. 4 Fuel Injector Circuit Short To Ground | ||||||||
| P1229(3) | (3) 17637 | Cylinder No. 5 Fuel Injector Circuit Short To Ground | ||||||||
| P1230(3) | (3) 17638 | Cylinder No. 6 Fuel Injector Circuit Short To Ground | ||||||||
| P1237(3) | (3) 17645 | Cylinder No. 1 Fuel Injector Open Circuit | ||||||||
| P1238(3) | (3) 17646 | Cylinder No. 2 Fuel Injector Open Circuit | ||||||||
| P1239(3) | (3) 17647 | Cylinder No. 3 Fuel Injector Open Circuit | ||||||||
| P1240(3) | (3) 17648 | Cylinder No. 4 Fuel Injector Open Circuit | ||||||||
| P1241(3) | (3) 17649 | Cylinder No. 5 Fuel Injector Open Circuit | ||||||||
| P1242(3) | (3) 17650 | Cylinder No. 6 Fuel Injector Open Circuit | ||||||||
| P1250(4) | (4) 17658 | Fuel Level Too Low | ||||||||
| P1325(4) | (4) 17733 | Cylinder No. 1 Knock Control Limit Attained | ||||||||
| P1326(4) | (4) 17734 | Cylinder No. 2 Knock Control Limit Attained | ||||||||
| P1327(4) | (4) 17735 | Cylinder No. 3 Knock Control Limit Attained | ||||||||
| P1328(4) | (4) 17736 | Cylinder No. 4 Knock Control Limit Attained | ||||||||
| P1329(4) | (4) 17737 | Cylinder No. 5 Knock Control Limit Attained | ||||||||
| P1330(4) | (4) 17738 | Cylinder No. 6 Knock Control Limit Attained | ||||||||
| P1337(1) | (1) 17745 | Camshaft Position Sensor Short To Ground (Bank 1) | ||||||||
| P1338(1) | (1) 17746 | Camshaft Position Sensor Open Circuit Or Short To B+ (Bank 1) | ||||||||
| P1386(1) | (1) 17794 | Internal Control Module Knock Control Circuit Error | ||||||||
| P1391(1) | (1) 17799 | Camshaft Position (CMP) Sensor Short To Ground (Bank 2) | ||||||||
| P1392(1) | (1) 17800 | Camshaft Position (CMP) Sensor Open Circuit Or Short To B+ (Bank 2) | ||||||||
| P1410(1) | (1) 17818 | Fuel Tank Ventilation Valve Circuit Short To B+ | ||||||||
| P1421(3) | (3) 17829 | Secondary Air Injection Valve Circuit Short To Ground | ||||||||
| P1422(3) | (3) 17830 | Secondary Air Injection System Control Valve Circuit Short To B+ | ||||||||
| P1425(1) | (1) 17833 | Tank Vent Valve Short To Ground | ||||||||
| P1426(1) | (1) 17834 | Tank Vent Valve Open | ||||||||
| P1432(1) | (1) 17840 | Secondary Air Injection Valve Open | ||||||||
| P1433(1) | (1) 17841 | Secondary Air Injection System Pump Relay Circuit Open | ||||||||
| P1434(1) | (1) 17842 | Secondary Air Injection System Pump Relay Circuit Short To B+ | ||||||||
| P1435(1) | (1) 17843 | Secondary Air Injection System Pump Relay Circuit Short To Ground | ||||||||
| P1436(1) | (1) 17844 | Secondary Air Injection System Pump Relay Circuit Electrical Malfunction | ||||||||
| P1471(4) | (4) 17879 | EVAP Emission Control LDP Circuit Short To B+ | ||||||||
| P1472(4) | (4) 17880 | EVAP Emission Control LDP Circuit Short To Ground | ||||||||
| P1473(4) | (4) 17881 | EVAP Emission Control LDP Open Circuit | ||||||||
| P1476(4) | (4) 17884 | EVAP Emission Control LDP Circuit Malfunction/Insufficient Vacuum | ||||||||
| P1477(4) | (4) 17885 | EVAP Emission Control LDP Circuit Malfunction | ||||||||
| P1500(3) | (3) 17908 | Fuel Pump Relay Circuit Electrical Malfunction |
||||||||
| P1501(3) | (3) 17909 | Fuel Pump Relay Circuit Short To Ground | ||||||||
| P1502(3) | (3) 17910 | Fuel Pump Relay Circuit Short To B+ | ||||||||
| P1505(1) | (1) 17913 | CTP Switch Does Not Close (Open Circuit) | ||||||||
| P1512(3) | (3) 17920 | Intake Manifold Change-Over Valve Circuit Short To B+ | ||||||||
| P1515(3) | (3) 17923 | Intake Manifold Change-Over Valve Circuit Short To Ground | ||||||||
| P1516(3) | (3) 17924 | Intake Manifold Change-Over Valve Circuit Open | ||||||||
| P1519(1) | (1) 17927 | Intake Camshaft Control Malfunction (Bank 1) | ||||||||
| P1522(1) | (1) 17930 | Intake Camshaft Control Malfunction (Bank 2) | ||||||||
| P1543(1) | (1) 17951 | Throttle Actuation Potentiometer Signal Too Low | ||||||||
| P1544(1) | (1) 17952 | Throttle Actuation Potentiometer Signal Too High | ||||||||
| P1545(1) | (1) 17953 | Throttle Position Control Malfunction | ||||||||
| P1558(1) | (1) 17966 | Throttle Actuator Electrical Malfunction | ||||||||
| P1559(4) | (4) 17967 | Idle Speed Control Throttle Position Adaptation Malfunction | ||||||||
| P1560(4) | (4) 17968 | Maximum Engine Speed Exceeded | ||||||||
| P1564(4) | (4) 17972 | Idle Speed Control Throttle Position Low Voltage During Adaptation | ||||||||
| P1565(1) | (1) 17973 | Idle Speed Control Throttle Position Lower Impact Not Attained | ||||||||
| P1600(3) | (3) 18008 | Power Supply (B+) Terminal 15 Low Voltage | ||||||||
| P1602(4) | (4) 18010 | Power Supply (B+) Terminal 30 Low Voltage | ||||||||
| P1606(4) | (4) 18014 | Rough Road/Acceleration Specification Engine Torque ABS-PCM Electrical Malfunction | ||||||||
| P1612(3) | (3) 18020 | PCM Incorrectly Coded (Vehicle With A/T Is Coded For M/T) | ||||||||
| P1612(4) | (4) 18020 | PCM Incorrectly Coded (Vehicle With ASR Is Not Coded For ASR) | ||||||||
| P1624(3) | (3) 18032 | MIL Request Signal Active | ||||||||
| P1626(1) | (1) 18034 | CAN Bus Missing Message From Transmission Controller | ||||||||
| P1640(1) | (1) 18048 | Internal Controller Module (EEPROM) Error | ||||||||
| P1681(3) | (3) 18089 | Controller Unit Programming Not Finished | ||||||||
| P1690(4) | (4) 18098 | MIL Malfunction | ||||||||
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Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
