instrument cluster AUDI A4 1999 B5 / 1.G AWM Engine Diagnostic Trouble Code Memory Checking Workshop Manual

01-17
Diagnostic Trouble Code (DTC) table

Notes:

When malfunctions occur in monitored sensors or components, Diagnostic Trouble Codes (DTCs) are stored in DTC
memory with a description of the malfunction type.
"E-Gas" relevant malfunctions are also indicated in the instrument cluster by the warning lamp for Electronic Power
Control ("EPC warning lamp"); Notes for E-Gas system Page 24
-120
.
Malfunctions that worsen emissions are indicated by an exhaust warning lamp (MIL) in the instrument cluster. Notes for
Malfunction Indicator Lamp (MIL) Page 01
-3 .
The DTC table is organized by the 5 digit code at left.
If a stored DTC does not recur within the next 40 warm-up cycles, the DTC will be erased automatically.
Malfunctions that occur sporadically (temporarily occurring malfunctions) are identified with "sporadic" on display. The
word sporadic means "appearing or occurring at irregular intervals, occasional".
Do not immediately replace components that the VAS5051 suggests are faulty, instead: Check wire connections and
harness connectors to these components according to wiring diagram. Also check Ground (GND) connections according
to wiring diagram. This is particularly valid when malfunctions are displayed as "sporadic".
If the connector is disconnected from the ECM or the battery is disconnected, all adaptation values in the control module
are erased. DTC memory content will remain intact however. If the engine is started after this, a rough, uneven idle can
result. In this case, engine must be allowed to run at idle for a few minutes until adaptation procedure has been
completed.
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01-34

DTC
DTC text
Corrective action
SAE
VAG


P1237 17645 Cylinder 1 fuel injector
-N30-
Open circuit - Check fuel injectors Page 24
-37
.
P1238 17646 Cylinder 2 fuel injector
-N31-
Open circuit
P1239 17647 Cylinder 3 fuel injector
-N32-
Open circuit
P1240 17648 Cylinder 4 fuel injector
-N33-
Open circuit
P1250 17658 Fuel level too low
Repair Manual, Electrical Equipment, Repair Group 01, On Board Diagnostic
(OBD) of instrument cluster
- Resulting malfunction Note
- Fill fuel tank with fuel, erase DTC memory
- Check DTC memory of instrument cluster
Note:
Pa
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) memor
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01-50

DTC
DTC text
Corrective action
SAE
VAG


P1648 18056 Powertrain CAN-bus
faulty - Check data exchange between Engine Control Module (ECM) and
other CAN capable control modules Page 24
-178

P1649 18057 Powertrain CAN-bus
Missing message from ABS
control module
P1650 18058 Powertrain CAN-bus
Missing message from
instrument cluster
P1654 18085 Check DTC memory of the
instrument cluster Repair Manual, Electrical Equipment, Repair Group 01, On Board
Diagnostic (OBD) of instrument cluster

P1682 18090 Powertrain CAN-bus
Implausible message from ABS
control module - Check data exchange between Engine Control Module (ECM) and
other CAN capable control modules Page 24
-178

P1853 18261 Powertrain CAN-bus
Implausible message from ABS
control module
Pa
ge 49 of 49 Dia
gnostic Trouble Code
(DTC
) memor
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g and erasin
g
11/22/2002 htt
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play?action=Goto&t
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pair&id=AUDI.B5.FU07.01.2