Audi A8 1994 Service Manual page 12

Audi A8 1994 ➤
Motronic injection and ignition system (6-cylinder) - Edition 02.1999
Fault code
P1127 17535 Bank 1, Mixture adaption (mult.)
System too rich
P1128 17536 Bank 1, Mixture adaption (mult.)
System too lean
P1129 17537 Bank 2, Mixture adaption (mult.)
System too rich
P1130 17538 Bank 2, Mixture adaption (mult.)
System too lean
P1131 17539 Bank 2 - Probe 1
Internal resistance too great
Note:
mult. = multiplicative, i.e. the fault occurs across the whole range of engine speeds and engine loads.
Fault code
SAE V.A.G
P1136 17544 Bank 1, Mixture adaption (add.)
System too lean
P1137 17545 Bank 1, Mixture adaption (add.)
System too rich
P1138 17546 Bank 2, Mixture adaption (add.)
System too lean
P1139 17547 Bank 2, Mixture adaption (add.)
System too rich
Note:
add. = additive, i.e. the fault only occurs at idling speed.
Fault code
SAE V.A.G
P1147 17555 Lambda control, Bank 2
System too lean
P1148 17556 Lambda control, Bank 2
System too rich
P1149 17557 Lambda control, Bank 1
Implausible control value
P1150 17558 Lambda control, Bank 2
Implausible control value
P1171 17579 Angle sens. 2 for throt. valve drive -G188
Implausible signal 1)
P1172 17580 Angle sens. 2 for throt. valve drive -G188
Signal too small 1)
P1173 17581 Angle sens. 2 for throt. valve drive -G188
Signal too large 1)
1) If this fault occurs the engine control unit activates the EPC warning lamp in the dash panel insert.
Notes on EPC warning lamp =>Page
8
01 - Self-diagnosis
Readout on fault reader display
Readout on fault reader display
Readout on fault reader display
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80 .
Fault rectification
Take car for test drive
(fuel in oil)
Check fuel system pressure
=> Page 34
Test air mass meter
=> Page 45
Test lambda probe
=> Page 52
Test injectors
=> Page 40
Test lambda probe heating
=> Page 57
Fault rectification
Take car for test drive
(fuel in oil)
Check fuel system pressure
=> Page 34
Test air mass meter
=> Page 45
Test lambda probe
=> Page 72
Fault rectification
Test lambda control
=>Page 52
Test angle sender
for throttle valve drive
=> Page 79
.