AUDI A4 1997 B5 / 1.G AFC Engine On Board Diagnostic Multiport Fuel Injection Owner's Manual

Malfunctions not present are stored in DTC
memory
Functions are not carried out (oxygen sensor
control, actuation of EVAP canister system,
etc.)

-
Press button.
Rapid data transfer
HELP
Select function XX

Indicated on display
Note:
After pressing the HELP button, an overview of the possible functions is
printed out.
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01-13

DTC memory, checking and erasing


- Connect VAG 1551 scan tool and operate until
the display shows "Select function XX" page
01
-7 .
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -2- to select the"Check DTC Memory" function
02.
Rapid data transfer
Q
02 - Check DTC Memor
y

Indicated on display
- Press -Q- button to confirm input.
X DTC reco
gnized

The number of stored Diagnostic Trouble Codes (DTC) or "No DTC
recognized" is shown on the display.
Notes:
No DTC reco
gnized

Note:
If there is a complaint that is not recognized by the On Board Diagnostic
If the printer is switched on, the stored malfunctions will be displayed
and printed out in sequence. If the printer is switched off, the button must be pressed to display
the next malfunction.
-
After the last malfunction is displayed, press the button.
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(OBD), carry out additional troubleshooting according to the Malfunction
Table in the "Engine Troubleshooting" binder.
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01-14

Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -5- to select the "Erase DTC Memory" function
05.
Rapid data transfer
Q
05 - Erase DTC Memor
y

Indicated on display
Note:
Every time DTC memory is erased (both with function 05 and with
address word 33, mode 4) the readiness code is erased.
______________________________________________ - Press -Q- button to confirm input.
Caution DTC Memory is not interrogated

If indicated on display
If the ignition was switched off between checking and erasing DTC
memory, then DTC memory is not erased.
______________________________________________ - Comply with work sequence exactly, i.e. first check DTC memory.
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01-15

Rapid data transfer DTC Memor
y is erased

Indicated on display
-
Press button.
Rapid data transfer
HELP
Select function XX

Indicated on display
Note:
After address word 00 is inserted, the DTC memory of all systems with
rapid data transfer is checked. - Repair malfunctions printed out according to Diagnostic Trouble Code
(DTC) table page 01
-26
.
- After repairing the malfunctions, check DTC memory again to erase
any malfunctions that may have been stored (e.g. by disconnecting
connectors).
- Stop engine (switch ignition off) and start again.
- Test drive for at least 10 minutes.
- Carry out Automatic Test Sequence by inserting address word 00.
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01-16
Diagnostic Trouble Code (DTC) overview

Notes:

The Diagnostic Trouble Code (DTC) overview is organized according to SAE and VAG trouble codes.
Diagnostic Trouble Codes (DTC) for which the MIL is not switched on by the engine control module after a malfunction is
recognized are identified with the MIL switching condition "off."
Diagnostic Trouble Codes (DTC) for which the MIL is switched on by the engine control module immediately after a
malfunction is recognized are identified with the MIL switching condition "immediately."
Diagnostic Trouble Codes (DTC) for which the MIL is not switched on until the malfunction is recognized after taking 2
trips (FTP 72) are identified with the MIL switching condition "2 Trips."
Always repair the malfunctions with the MIL switching condition "immediately" first, and then the malfunctions with the
switching condition "2 Trips."
Diagnostic Trouble Code
(DTC) Malfunction text
MIL switching
condition
SAE
VAG
P0102 16486 Mass or Volume Air Flow Circuit Low Input immediately
P0103 16487 Mass or Volume Air Flow Circuit High Input immediately
P0116 16500 Engine Coolant Temperature Circuit Range/Performance
Problem immediately
P0117 16501 Engine Coolant Temperature Circuit Low Input immediately
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P0118 16502 Engine Coolant Temperature Circuit High Input immediately
P0120 16504 Throttle Position Sensor A Circuit Malfunction immediately
P0121 16505 Throttle Position Sensor A Circuit Range/Performance
Problem immediately
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01-17

Diagnostic Trouble Code (DTC)
Malfunction text
MIL switching condition
SAE
VAG
P0122 16506 Throttle Position Sensor A Circuit Low Input immediately
P0123 16507 Throttle Position Sensor A Circuit High Input immediately
P0130 16514 O2 Sensor Circuit Malfunction (Bank 1 Sensor 1) immediately
P0132 16516 O2 Sensor Circuit High Voltage (Bank 1 Sensor 1) immediately
P0133 16517 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1) 2 Trips
P0134 16518 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1) immediately
P0135 16519 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) immediately
P0136 16520 O2 Sensor Circuit Malfunction (Bank 1 Sensor 2) immediately
P0138 16522 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2) immediately
P0141 16525 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2) immediately
P0150 16534 O2 Sensor Circuit Malfunction (Bank 2 Sensor 1) immediately
P0152 16536 O2 Sensor Circuit High Voltage (Bank 2 Sensor 1) immediately
P0153 16537 O2 Sensor Circuit Slow Response (Bank 2 Sensor 1) 2 Trips
P0154 16538 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) immediately
P0155 16539 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1) immediately
P0156 16540 O2 Sensor Circuit Malfunction (Bank 2 Sensor 2) immediately
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01-18

Diagnostic Trouble Code (DTC)
Malfunction text
MIL switching condition
SAE
VAG
P0158 16542 O2 Sensor Circuit High Voltage (Bank 2 Sensor 2) immediately
P0161 16545 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2) immediately
P0170 16554 Fuel Trim Malfunction (Bank 1) 2 Trips
P0171 16555 System too Lean (Bank 1) 2 Trips
P0172 16556 System too Rich (Bank 1) 2 Trips
P0173 16557 Fuel Trim Malfunction (Bank 2) 2 Trips
P0174 16558 System too Lean (Bank 2) 2 Trips
P0175 16559 System too Rich (Bank 2) 2 Trips
P0300 16684 Random Misfire Detected 2 Trips / blink
P0301 16685 Cylinder 1 Misfire Detected 2 Trips / blink
P0302 16686 Cylinder 2 Misfire Detected 2 Trips / blink
P0303 16687 Cylinder 3 Misfire Detected 2 Trips / blink
P0304 16688 Cylinder 4 Misfire Detected 2 Trips / blink
P0305 16689 Cylinder 5 Misfire Detected 2 Trips / blink
P0306 16690 Cylinder 6 Misfire Detected 2 Trips / blink
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01-19

Diagnostic Trouble Code
(DTC) Malfunction text
MIL switching
condition
SAE
VAG
P0322 16706 Ignition/Distributor Engine Speed Input Circuit No Signal immediately
P0327 16711 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor) immediately
P0332 16716 Knock Sensor 2 Circuit Low Input (Bank 2) immediately
P0337 16721 Crankshaft Position Sensor Circuit Low Input immediately
P0401 16785 Exhaust Gas Recirculation Flow Insufficient Detected 2 Trips
P0402 16786 Exhaust Gas Recirculation Flow Excessive Detected 2 Trips
P0422 16806 Main Catalyst Efficiency Below Threshold (Bank 1) 2 Trips
P0432 16816 Main Catalyst Efficiency Below Threshold (Bank 2) 2 Trips
P0440 16824 Evaporative Emission Control System Malfunction 2 Trips
P0452 16836 Evaporative Emission Control System Pressure Sensor Low
Input immediately
P0453 16837 Evaporative Emission Control System Pressure Sensor High
Input immediately
P0461 16845 Fuel Level Sensor Circuit Range/Performance immediately
P0501 16885 Vehicle Speed Sensor Range/Performance immediately
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gnostic
(OBD
) - Multi
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(MFI
)
11/22/2002 htt
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1