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Trouble
Code
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Information
Sensor Cause of Fault
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Remedy
in F0:DATA LIST No.
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Trouble
Code Storage when ...
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44
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LEAN EXHAUST
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27,
28, 29, 30, 31, 32, 33
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· Engine running since at
least 40 s
· Following trouble codes
not stored: 21, 22, 33, 34
· Oxygen sensor loop open
· Integrator value not
equal to 128 steps (no reset condition)
· Coolant temperature
higher than 75 °C/ 167 °F
· Throttle valve aperture
greater than 0 %
· The fault is recognised
by the control unit if the oxygen sensor voltage is lower than 274 mV
for longer than 21 s.
Replacement
value:
· 450 mV
Effects:
· Oxygen sensor regulation
is switched off, i.e. open oxygen sensor loop
Note:
The oxygen
sensor must not be wrapped in aluminium foil. Remove foil. Then delete
trouble code. If trouble code 44 is set again, start trouble-shooting
according to F0:DATA LIST no. 27.
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