Multi 197i What to do if...
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ba75339e04 07/2009
6.2 Oxi system messages
Error message 0FL
Error message E3
Error message E7
AR flashes
continuously
Cause Remedy
Display range exceeded
Oxygen sensor
– Not connected – Connect the sensor
– Cable broken – Replace sensor
– Depleted – Replace sensor
– Short-circuit between gold and
lead electrode
– Clean sensor and replace it if
necessary
Cause Remedy
Invalid calibration
Oxygen sensor
– Electrolyte solution depleted – Regenerate sensor
– Membrane contaminated – Clean membrane
– Electrode system poisoned – Regenerate sensor
– Obsolete – Replace sensor
– Broken – Replace sensor
Cause Remedy
Membrane damaged
– Membrane damaged – Regenerate sensor
– Membrane head screwed on
not tight enough
– Screw membrane head tight
Cause Remedy
No stable measured value
– Membrane contaminated – Clean membrane
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