DTC Detection Logic
WARNING: This page is about a different variant/trim than selected.
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.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P2253 |
O2 sensor bank 1 sensor 1 (O2 sensor negative current control circuit high bank 1 sensor 1) |
A) |
Diagnosis condition |
-- |
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Signal (terminal) |
Air fuel ratio sensor 1 signal |
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Threshold |
The A/F signal computed by ECM from the A/F sensor 1 signal is constantly in a range other than approx. 2.2 V |
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Diagnosis delay time |
-- |
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B) |
Diagnosis condition |
-- |
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Signal (terminal) |
Air fuel ratio sensor 1 signal |
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Threshold |
The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 2.2 V |
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Diagnosis delay time |
-- |
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