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Land Rover
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2003
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Discovery II (LT) V8-4.6L
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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Diagnostic Trouble Code Descriptions
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P0139
P0139
DTC P0139
Lambda sensor aging downstream bank 1 Drive cycle C:Signal out of range - above maximum.
DTC P0139
Lambda sensor aging downstream bank 1 Drive cycle C:Signal out of range - below minimum.