DTC DETECTION LOGIC

To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored not to be shifted to LEAN side or RICH side.

DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P2A00
Air fuel ratio (A/F) sensor 1 (bank 1) circuit range/performance
  • The output voltage computed by ECM from the A/F sensor 1 signal is shifted to the lean side for a specified period.
  • The A/F signal computed by ECM from the A/F sensor 1 signal is shifted to the rich side for a specified period.
  • A/F sensor 1
  • A/F sensor 1 heater
  • Fuel pressure
  • Fuel injector
  • Intake air leaks
P2A03
Air fuel ratio (A/F) sensor 1 (bank 2) circuit range/performance

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE