P1715

P1715 is a Mitsubishi-specific code meaning the TCM detected an implausible signal from the Park/Neutral Position (PNP) switch on the transaxle — the gear-position contacts reported a state that doesn't match the actual shift-lever position, or two range contacts closed simultaneously. The PNP switch is a multi-contact rotary device bolted to the trans manual lever shaft; on Mitsubishi 4-speed and CVT applications it sends discrete voltage levels (or grounded contacts) to the TCM identifying P/R/N/D/2/L. Cheapest-first ladder: (1) Inspect the PNP connector at the trans for the classic Mitsubishi pattern — green corrosion on the pins from condensation entering the rubber boot ($0, 10 min, catches roughly 30% on 100k+ mile cars). (2) Watch live data with a scan tool while moving the shift lever through every position — TCM should display each range cleanly with no flicker; flicker or two-ranges-at-once means worn contacts or misadjusted lever. (3) Verify shift cable adjustment — Mitsubishi's PNP switch is sensitive to cable stretch, and a stretched cable on a 15-year-old Galant will park the lever between Park and Reverse on the switch even though the floor lever feels right. Adjust per FSM (loosen the cable bracket at the trans, place selector in N at the floor lever, rotate the manual lever to N at the trans, retighten). (4) Ohm the switch contacts pin-by-pin against the FSM chart — open or shorted contacts means switch replacement ($60-180). Expensive-misdiagnosis caveat: don't replace the PNP switch without first checking the TCM ground and the harness routing along the trans cooler line — Mitsubishi runs the PNP harness next to the cooler lines, and a weeping cooler-line fitting drips ATF onto the connector and wicks into the switch body, mimicking switch failure; cleaning and re-sealing fixes it for $0 in parts.

Vehicle-specific patterns: 2004-2012 Mitsubishi Lancer 2.0/2.4L (4B11/4G69) commonly throws P1715 from PNP connector corrosion after winter exposure — the connector sits low on the trans case and catches road spray. 2007-2013 Mitsubishi Outlander 2.4L (4B12) and 3.0L (6B31) shares the connector-corrosion failure path; the CVT-equipped models also throw P1715 when the JATCO CVT internal harness shifts position after a fluid service done with the wrong fluid. 2004-2012 Mitsubishi Galant 2.4L (4G69) and 3.8L (6G75) throws P1715 from cable stretch on cars past 130k. 2006-2011 Mitsubishi Eclipse 3.8L (6G75) and 2004-2011 Endeavor 3.8L sees P1715 from the same cable-and-connector pattern. 2014-2020 Mitsubishi Mirage 1.2L (3A92) throws P1715 from a different failure mode — the CVT's stepper-position learn gets lost after battery disconnect, and the relearn procedure has to be run before the PNP signal validates. Estimated repair: $0 to $300.