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Home >> Infiniti >> 2013 >> M37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 72 (Engine Control System - DTCS U0101 To P0183) >> DTC P0132, P0152: A/F Sensor 1 >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2013 Infiniti M56. However, it is still accessible from the selected car via links, so may be relevant.

To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal is not inordinately high.

DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible Cause
P0132 A/F SENSOR1 (B1) [Air fuel ratio (A/F) sensor 1 (bank 1) circuit high voltage]
  • The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 5 V.
  • Harness or connectors (The A/F sensor 1 circuit is open or shorted.)
  • A/F sensor 1
P0152 A/F SENSOR1 (B2) [Air fuel ratio (A/F) sensor 1 (bank 2) circuit high voltage]
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