- Faulty Manual Mode Switch (Built into A/T control device)
- Faulty Position Select Switch (Built into A/T control device)
- Manual Mode Switch harness is open or shorted
- Manual Mode Switch circuit poor electrical connection
- Engine Light ON (or Service Engine Soon Warning Light)
P1815 Infiniti DescriptionManual Mode Switch is installed in A/T device. It sends manual mode switch, shift up and shift down switch signals to Transmission Control Module (TCM). TCM sends the switch signals to combination meter. by CAN communication line. Then manual mode switch position is indicated on the A/T indicator.
P1815 Infiniti Information for specific Infiniti models
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