stlunatics2oo3 Posted October 21, 2002 Report Share Posted October 21, 2002 what is code 44? Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted October 21, 2002 Report Share Posted October 21, 2002 CODE 44 Trouble Code 44 indicates that the O2 sensor is showing a persistently high exhaust oxygen content (lean), despite the efforts of the ECM to increase injector on-time (thus increasing fuel delivered). Integrator and BLM numbers may indicate > 128 by a substantial margin. Code 44 is set when: O2 sensor voltage remains below .2 volt for 60 or more seconds System is operating in "Closed Loop." No Code 33 or Code 34 Possible causes include: O2 sensor defective or lead shorted Lean injectors (dirty or blocked) Water in fuel Exhaust leaks upstream of O2 sensor Fuel pressure too low Note: Presence of Code(s) 33 and/or 34 may indicate MAP problem. This should be the first suspect in the case of a Code 44 being set. Quote Link to comment Share on other sites More sharing options...
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