P1815 INFINITI, NISSAN: MANUAL MODE SWITCH
POST UPDATED IN June, 2023
P1815 INFINITI, NISSAN: MANUAL MODE SWITCH
The manual mode switch is installed on the A/T control device. This switch reports up and downshifts to the TCM (Transmission Control Module). At the same time, the TCM sends signals from the switch to the combination meter via the CAN communication line. Then, the switch is reported on the A/T position indicator.
The Diagnostic Code P1815 OBDII is set when after monitoring the TCM to the Manual Mode Switch, it detects that the switch signal has irregularities by producing an impossible input pattern.
Reasons for setting the P1815 OBD2 fault code:
To troubleshoot the DTC P1815 OBDII, try this: