DTC P1646:00, P1647:00: Notes
WARNING: This page is about a different variant/trim than selected.
| DTC P1646:00 |
A/F sensor (RH) control chip |
| DTC P1647:00 |
A/F sensor (LH) control chip |
| DETECTION CONDITION |
- P1646:00 indicates the A/F sensor (RH) control chip.
- P1647:00 indicates the A/F sensor (LH) control chip.
- The PCM monitors the application-specific integrated circuit that controls and monitors the HO2S. The test fails when the PCM detects an internal circuit or communication concern.
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| POSSIBLE CAUSE |
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