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Home >> Infiniti >> 2008 >> G35 x >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U1000 Through P0153 >> DTC P0130, P0150: A/F Sensor 1 >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal fluctuates according to fuel feedback control.

DTC DETECTING CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible Cause
P0130 Air fuel ratio (A/F) sensor 1 (bank 1) circuit A) The A/F signal computed by ECM from the A/F sensor 1 signal is constantly in the range other than approx. 2.2V.
  • Harness or connectors (The A/F sensor 1 circuit is open or shorted.)
  • A/F sensor 1
B) The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 2.2V.
P0150 Air fuel ratio (A/F) sensor 1 (bank 2) circuit A) The A/F signal computed by ECM from the A/F sensor 1 signal is constantly in the range other than approx. 2.2V.
B) The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 2.2V.
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