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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01-48
DTC
DTC text
Corrective action
SAE
VAG
P1610 18018 Control module faulty
- Replacing Engine Control Module (ECM) Page 24
-22
P1612 18020 Engine Control Module (ECM)
incorrectly coded - Code Engine Control Module (ECM) Page 01
-71
P1624 18032 Request for warning lamp on
active
1)
Repair Manual, 5
-Spd. Automatic Transmission 01V, 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 CAN-bus
Missing message from
Transmission Control Module - Check data exchange between Engine Control Module (ECM) and
other CAN capable control modules Page 24
-178
1) 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). Notes for 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.
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