check engine AUDI A6 1998 C5 / 2.G ATQ Engine Check DTC Memory And Erase DTC Memory Service Manual

01-53

DTC
DTC text
Corrective action
SAE
VAG


P1386 17794 Control module faulty
- Replace Engine Control Module (ECM) Page 24
-21
P1612 18020 Engine Control Module (ECM)
incorrectly coded
1) - Code Engine Control Module (ECM) Page 01
-71
P1624 18032 Request for warning lamp on active
7)
Repair Manual, Automatic Transmission On Board Diagnostic
(OBD), Repair Group 01; On Board Diagnostic (OBD) - Exhaust related malfunction of Transmission Control Module
(TCM)
- Check DTC memory of Transmission Control Module (TCM)
P1626 18034 Powertrain databus
Missing message from Transmission
Control Module (TCM)
1) - Check data transfer of Engine Control Module (ECM) and other
CAN capable control modules Page 24
-192

1) For these malfunctions, ECM does not switch on the Malfunction Indicator Lamp (MIL) unless malfunction is recognized
again after another engine start. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
7) The Transmission Control Module (TCM) recognized a malfunction that worsens engine emissions. The Transmission
Control Module (TCM) sends the DTC to the Engine Control Module (ECM), which then switches on the Malfunction Indicator
Lamp (MIL). Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 . The message P1624 is simultaneously stored in the
Engine Control Module (ECM) as evidence that the Malfunction Indicator Lamp (MIL) was not switched on due to an engine
problem but rather a transmission problem.
Pa
ge 49 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

01-54

DTC
DTC text
Corrective action
SAE
VAG


P1630 18038 Throttle Position (TP) sensor -G79-
Signal too small
2) 3)
- Throttle Position (TP) sensor, checking
Page 24
-154

P1631 18039 Throttle Position (TP) sensor -G79-
Signal too large
2) 3)

P1633 18041 Sender -2- for accelerator pedal position -G185-
Signal too small
2) 3)


P1634 18042 Sender -2- for accelerator pedal position -G185-
Signal too large
2) 3)


P1639 18047 Throttle Position (TP) sensor -G79- and sender -2- for
accelerator pedal position -G185-
Implausible signal
2)3)
- Throttle Position (TP) sensor, checking
Page 24
-154

P1640 18048
Control module faulty
1)
- replacing Engine Control Module (ECM)
Page 24
-21

1) For these malfunctions, ECM does not switch on the Malfunction Indicator Lamp (MIL) unless malfunction is recognized
again after another engine start. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
2) For these malfunctions, ECM switches on the EPC warning lamp in instrument cluster. Significance of EPC warning lamp
Page 24
-136
.
Pa
ge 50 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

3) For these malfunctions, the Engine Control Module (ECM) switches on the Malfunction Indicator Lamp (MIL) in the
instrument cluster immediately after recognizing the malfunction. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
Pa
ge 51 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

01-55

DTC
DTC text
Corrective action
SAE
VAG


P1648 18056 Powertrain databus
faulty - Check Engine/ABS/Transmission control module Page 24
-192
P1649 18057 Powertrain databus
Missing message from ABS
control module
P1682 18090 Powertrain databus
Implausible message from ABS
control module - Check data transfer of Engine Control Module (ECM) and other CAN
capable control modules Page 24
-192

P1853 18261 Powertrain databus
Implausible message from ABS
control module - Check data transfer of Engine Control Module (ECM) and other CAN
capable control modules Page 24
-192

P3262 16646 Exhaust bank 1/2
Oxygen sensors behind catalytic
converter mixed up - Check harness connectors1) For these malfunctions, ECM does not switch on the Malfunction Indicator Lamp (MIL) unless malfunction is recognized
again after another engine start. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
2) For these malfunctions, ECM switches on the EPC warning lamp in instrument cluster. Significance of EPC warning lamp
Page 24
-136
.
Pa
ge 52 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2