P1C86 · Manufacturer communications

JEEP · 2026-10-08

Flash: Electronic Shift Module (ESM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● U114C-00 - Lost Communication With PRNDL Display. ● P1C86-00 - PRNDL Display. Customers may also comment on one or more of the following: ● "Service Shifter" message showing on Instrument Panel Cluster (IPC). ● PRNDL lights are not illuminating. This bulletin involves reprogramming the ESM with the latest available software.

JEEP · 2017-10-04

KL Gear Shift Module For 2015-2018 KL ONLY, if vehicle DTC Code P1C86-1D (PRNDL Display Current out of Range) is verified as either stored or active please contact Pablo Flores in FCA Chassis Engineering at cell (248) 979-7062. If no response in 15 minutes, proceed with repair. For additional repair see NOTES below: NOTE 1: If DTC P1C86-1D is still active after inspecting harness connections from Service Procedure (STEP 2). DO NOT replace SHIFTER ASSEMBLY. Instead, replace PRNDM bezel only. NOTE 2: After replacing PRNDL Assembly, clear DTCs and check to confirm DTC does not return. Please return parts back to FCA Engineering if PRNDM is deemed non-functional after performing this Tech Tip. For 2015-2018 KL ONLY; If vehicle DTC Code P1C86-1D (PRNDL Display Current out of Range) is verified…

DODGE, JEEP · 2015-10-21

Part Description: ATX Shifter Issue Description: Prior to removing (or disconnecting) the automatic transmission shifter knob, for any service to the shifter or for console removal, disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service. This will prevent a P1C86-14 DTC being stored in the electronic shift module (ESM). Failure to disconnect the battery before servicing the shifter may cause the P1C86-14 DTC to be set again. Clear the code before replacing the shifter. In the event a P1C86-14 DTC persist after following the above procedure, refer to 28 - DTC-Based Diagnostics, in the service manual.

DODGE, JEEP · 2015-10-21

Part Description: ATX Shifter Issue Description: Prior to removing (or disconnecting) the automatic transmission shifter knob, for any service to the shifter or for console removal, disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service. This will prevent a P1C86-14 DTC being stored in the electronic shift module (ESM). Failure to disconnect the battery before servicing the shifter may cause the P1C86-14 DTC to be set again. Clear the code before replacing the shifter. In the event a P1C86-14 DTC persist after following the above procedure, refer to 28 - DTC-Based Diagnostics, in the service manual.