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Home >> Chevrolet >> 1988 >> Forward Control 5.7 M, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> CCC TBI Tests W/Codes >> Diagnostic Charts >> Code 44 - Lean Exhaust Indication >> Test Description

Test Description

NOTE: Test numbers refer to test numbers on diagnostic chart.

Code 44 is set when the O2 sensor signal on circuit No. 412 remains below .2 volt for 20 seconds, and the system is operating in "Closed Loop".

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