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 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
- Heated oxygen sensor 2
- Fuel pressure
- Fuel injector
- Intake air leaks
- Exhaust gas leaks
|