1999 AUDI A4 heating

01-26

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P0506 16890 Idle Control System
RPM Lower Than Expected 2
Dcy - Check idle speed page 24
-16
- Check throttle valve control module page 24
-128
- Check fuel pressure, fuel pressure regulator, and
residual fuel pressure page 24
-111

P0507 16891 Idle Control System
RPM Higher Than Expected
P0601 16985 Internal Contr. Module
Memory
Check Sum Error 2
Dcy Replace ECM page 01
-68

P0604 16988 Internal Contr. Module
Random Access
Memory (RAM) Error
P1102 17510 O2 Sensor Heating Circ.,
Bank1-Sensor1
Short to B+ 2
Dcy - Check Oxygen Sensor (O2S) heater -Z19- (bank 1,
sensor 1, before TWC) page 24
-34

P1105 17513 O2 Sensor Heating Circ.,
Bank1-Sensor2
Short to B+ 2
Dcy - Check O2S heater -Z29- (bank 1, sensor 2, behind
TWC) page 24
-52

Pa
ge 37 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1

P1107 17515 O2 Sensor Heating Circ.,
Bank2-Sensor1
Short to B+ 2
Dcy - Check O2S heater -Z28- (bank 2, sensor 1, before
TWC) page 24
-34

Pa
ge 38 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1

01-27

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1110 17518 O2 Sensor Heating Circ.,
Bank2-Sensor2
Short to B+ 2
Dcy - Check O2S heater -Z30- (bank 2, sensor 2, behind TWC)
page 24
-52

P1127 17535 Long Term Fuel Trim
mult., Bank1
System too Rich 1) 2
Dcy - Check Mass Air Flow (MAF) sensor -G70- page 24
-68
- Check Heated Oxygen Sensor (HO2S) -G39- (bank 1, sensor
1) and O2S control page 24
-22

- Check Oxygen Sensor (O2S) behind Three Way Catalytic
Converter (TWC) -G130- (bank 1, sensor 2) and O2S control
page 24
-42

- Check fuel pressure, fuel pressure regulator and residual fuel
pressure page 24
-111

- Check fuel injectors page 24
-102
and Output Diagnostic
Test Mode (DTM) page 01
-51

1) The term "mult." = multiplicative; applies to entire engine speed (RPM) and load range.
Pa
ge 39 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1