Saab 900 9000 with LH system 1985-1993

Fault codes Chart

 

code

cause

possible cure
12111
Learning fault in lambda(air fuel mixture adj)
vacuum leak,oxygen sensor,air mass meter
12112
Learning fault in lambda(air fuel mixture adj)
vacuum leak,oxygen sensor,air mass meter
12113
learning fault idling adj. too low
Iac valve, dirty ground points,bad ecu
12114
learning fault idling adj. too high
Iac valve, dirty ground points,bad ecu
12211
battery + voltage below 10 volts or above 16
Battery, alternator,wiring
12212
throttle position switch's idle contact faulty
throttle switch adj. or itself,
12213
throttle position switch's wide open throttle faulty
throttle switch adj. or itself,
12214
engine coolant temp sensor signal faulty
(ntc)eng temp sesor on intake mani fold
12221
mass air sensor no signal
mass air flow sensor
12222
idle adj faulty
Iac valve
12223
fuel air mixture too lean
vacuum leak,oxygen sesor,air mass meter
12224
fuel air mixture too rich
oxygen sesor, air mass meter
12225
oxygen sesor preheating faulty
blown or missing fuse,bad oxygen sesor
12231
No igntion signal this always comes on as first code as engine is not on
ignore unless car won't start
12232
Voltage for memory>1 volt
wiring
12333
eprom fault
ecu ( brain)
12241
injector faulty
this code comes up a lot but is normally false(ignore)
12242
no air mass sensor filament burn off
bad air mass meter
12243
no speed signal
 
12244
no drive signal to pin 30
 
12245
egr function faulty
cloged egr valve(if this code comes up you should have ecu replaced and blank off egr)
12251
throttle position sensor faulty
tps fault
12252
evap purge fault
 
12254
no rpm signal
this is pin 1 on all LH ecu's
22511
load signal to ezk(ign)failed
 
22512
knock sensor fault
 
0000
no faults
go back in the house for a beer

(This article is meant only to educate a consumer,or a guide line for professionals. You can cause serious damage to your vehicle and/or cause yourself injury. Only those qualified should attempt repairs. I do my best to assure that the above info is correct but take no responsibility for any damages incurred.)

 

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