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System Too Lean (Fuel Trim) PO170 lexus possible causes and solution
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Griffin     Reply with quote
System Too Lean (Fuel Trim) PO170 lexus possible causes and solution
Norm     Reply with quote
Regular unleaded use maybe need higher octane
Newman     Reply with quote
P0170 is a fuel trim malfunction code, and fuel trim is managed by the ECU through, among other things, the oxygen sensors. P0170 relates to O2 sensor bank one
Hanson     Reply with quote
If it is PO171 and you have an RX300 ITS A MASS AIR FLOW SENSOR.. ALSO MAY SET A PO170 BUT 171 IS MORE COMMON.(LEXUS TECH)
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