ignition AUDI A6 1995 C5 / 2.G ATQ Engine Check DTC Memory And Erase DTC Memory Workshop Manual

01-15


Check DTC Memory (function
02) and Erase DTC Memory
(function 05)

- Connect VAS5051 tester or VAG1551 scan tool
and select the control module for engine
electronics using "address word" 01 Page 01
-
9 .

Engine must run at idle for this.

Note:
If engine doesn't start, crank engine using starter
for at least 5 seconds. Do not switch ignition off
afterward under any circumstance. Rapid data transfer
HELP
Select function XX

When indicated on display:
- Press buttons -0- and -2- to select "Check DTC memory" and press -Q-
button to confirm input.
No DTC reco
gnized

When indicated on display:
or -
Press button.
X DTC reco
gnized

When indicated on display:
Pa
ge 1 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
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01-16

- Find printed DTCs in DTC table and repair
Page 01
-18
.

Important note:

If there are no DTCs in DTC memory, DTC
memory should not be unnecessarily erased or
else readiness code will be lost.
If DTC memory was erased, readiness code
must be re-generated Page 01
-82
.

-
Press button.Rapid data transfer
HELP
Select function XX

When indicated on display:
Note: - Press buttons -0- and -5- to select "Erase DTC memory" and press -Q-
button to confirm input.
Attention!DTC Memor
y was not interro
gated

When indicated on display:
Procedure was not followed exactly.
- Check DTC memory.
DTC memory will not be erased under the following conditions:
Ignition switched off after DTC memory was checked.
Pa
ge 3 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
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yp
e=re
pair&id=AUDI.B5.FU05.01.2

01-17

Rapid data transfer DTC Memor
y is erased

When indicated on display:
Note:
This causes DTCs to be erased that were stored during repair of
malfunction, e.g. because harness connectors were disconnected.
End Output -
Press button.- Check DTC memory again after repair work and erase it if necessary.
- If DTC memory was erased, readiness code must be re-generated
Page 01
-82
.
Rapid data transfer
HELP
Select function XX

When indicated on display:
- Press buttons -0- and -6- to select "End output" and press -Q- button to
confirm input.
Rapid data transfer
HELP
Insert address word XX

When indicated on display:
- Switch off ignition and disconnect diagnostic cable.
Pa
ge 5 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

01-24

DTC
DTC text
Corrective action
SAE
VAG


P0300 16684
Combustion misfire detected
1)
- Check fuel pressure Page 24
-30
- Test fuel injectors Page 24
-36
P0301 16685
Cyl. 1 combustion misfire detected
1)
- Check spark plugs and ignition wires with connector
P0302 16686
Cyl. 2 combustion misfire detected 1)
- Check ignition coils Page 28
-7
P0303 16687
Cyl. 3 combustion misfire detected
1)
- Check ignition coils Page 28
-10
P0304 16688
Cyl. 4 combustion misfire detected
1)
- Check misfire recognition Page 28
-52
P0305 16689
Cyl. 5 combustion misfire detected
1)
- Fill fuel tank with fuel
P0306 16690
Cyl. 6 combustion misfire detected 1)

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 .
Pa
ge 13 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

01-44

DTC
DTC text
Corrective action
SAE
VAG


P1393 17801 Ignition output 1
Electrical malfunction in circuit - Check activation or wiring connection from Engine Control Module
(ECM) to power output stage Page 28
-12

P1394 17802 Ignition output 2
Electrical malfunction in circuit
P1395 17803 Ignition output 3
Electrical malfunction in circuit
P1410 17818 EVAP canister purge regulator
valve -N80-
Short circuit to B+
1) - Check Evaporative Emission (EVAP) Canister Purge Regulator Valve
Page 24
-128

P1411 17819 Bank 2, Secondary Air Injection
(AIR) system
Throughput too low
1)
Repair Manual, Engine Mechanical, Repair Group 26; Secondary Air
Injection (AIR) system - Check fuse for Secondary Air Injection (AIR) pump
- Check vacuum hose setup
- Check hose setup from pump to combination valve for Secondary Air
Injection (AIR)
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 .
Note for DTC codes 17801, 17802, 17803:
Pa
ge 36 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
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pair&id=AUDI.B5.FU05.01.2

The terms "ignition output 1", "ignition output 2" and "ignition output 3" refer to the outputs on the Engine Control Module
(ECM), via which the Engine Control Module (ECM) activates the power output stages at the ignition coil.
Pa
ge 37 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