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 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. 2.2 V.
  • 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. 2.2 V.
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. 2.2 V.
B)
The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 2.2 V.

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
 
 3.CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
 
 4.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-I
 
 5.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-II
 
 6.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-III
 
 7.PERFORM COMPONENT FUNCTION CHECK FOR MALFUNCTION B