DTC Detection Logic
To judge malfunctions, 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 |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
|
|
P2252 |
O2 sensor bank 1 sensor 1 (O2 sensor negative current control circuit low bank 1 sensor 1) |
Diagnosis condition |
-- |
|
Signal (terminal) |
The A/F signal computed by ECM |
||
|
Threshold |
The output voltage computed by ECM according to the A/F sensor 1 signal is constant. |
||
|
Diagnosis delay time |
-- |
||