DTC Detection Logic
WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If DTC P2122 or P2123 is displayed with DTC P0643, perform the trouble diagnosis for DTC P0643. Refer to
"DTC LOGIC
".
DTC DETECTION LOGIC
| DTC No. | Trouble diagnosis name (Trouble diagnosis content) | DTC detecting condition | Possible cause |
|---|---|---|---|
| P2122 | APP SEN 1/CIRC (Accelerator pedal position sensor 1 circuit low input) | An excessively low voltage from the APP sensor 1 is sent to ECM. |
|
| P2123 | APP SEN 1/CIRC (Accelerator pedal position sensor 1 circuit high input) | An excessively high voltage from the APP sensor 1 is sent to ECM. |