WenmarOpen by Wenmar Pro

Service bulletins for the 2023 Jeep Grand Cherokee

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

866 on file from NHTSA, as of 2026-10-19.

About P16F0 on the 2023 Jeep Grand Cherokee: what the code means, and the bulletins and recalls about the same components.

By type

By component

By trouble code

Only bulletins with trouble code: P16F0 are shown. Show all

Bulletins, newest first
08-359-252025-11-05. Service bulletin. ELECTRICAL SYSTEM. Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set in the Hybrid Control Processor (HCP) module: ● P16F0-00 - SPI Comm Hardware Fault. Customers may also comment on one or more of the following: ● **Low/weak 12V battery or a no start condition due to voltage being under 10.5V. ● Unable to charge vehicle while key is off.** ● Shifts rough occasionally when coming down to a stop. ● Shifts rough occasionally when accelerating. ● Shifts rough when transitioning from EV to Hybrid operation on low SoC. ● Shifts rough when engines starts. ● On part throttle accelerations with little to no battery available the transition from battery power to engine on is harsh and abrupt. ● The engine oil life on dashboard drops down too fast when the engine oil dilution reaches high level without the ability to recover.
18-025-252025-05-20. Service bulletin. POWER TRAIN. "Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0629 - Fuel Pump Control Circuit High. ● P0171 - Fuel system Lean. ● P0087 - Fuel Rail Pressure Too Low – Bank 1. ● P16F0-00 - SPI Comm Hardware Fault. Customers may also experience one or more of the following: ● **Engine No Start.** ● The rear shafts can be damaged from pressing the accelerator while in gear with the Electronic Parking Brake (EPB) applied. ● Oxygen sensors can give wrong values entering EV mode. False fault detection is possible. ● The Instrument Panel Cluster (IPC) is unable to calculate the instantaneous fuel economy when under heavy acceleration. ● Variable Speed Fuel Pump doesn’t operate after refuel **This bulletin involves inspecting and possibly updating the PCM with the latest available software.**"
21-003-252025-01-14. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. "Flash: Transmission Control Module (TCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0810-00 - Clutch Position Control Error. ● P16F0-00 - SPI Comm Hardware Fault. Customers may also comment on one or more of the following: ● K0 Adaptation routine runs when vehicle stationary and EV Mode. ● Vehicle loses propulsion capability. ● Service transmission warning indicator is on. NOTE: Require key cycle to recover. ● Shifts rough occasionally when coming down to a stop. ● Shifts rough occasionally when accelerating. ● Shifts rough when transitioning from EV to Hybrid operation on low SoC. ● Shifts rough when engines starts. ● On part throttle accelerations with little to no battery available the transition from battery power to engine on is harsh and abrupt. ● The engine oil life on dashboard drops down too fast when the engine oil dilution reaches high level without the ability to recover. This bulletin involves reprogramming the TCM with the latest available software."
18-001-24 REV. C2024-09-10. Service bulletin. POWER TRAIN; FUEL/PROPULSION SYSTEM. "Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician must find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● **P0629 - Fuel Pump Control Circuit High. ● P0171 - Fuel system Lean. ● P0087 - Fuel Rail Pressure Too Low - Bank 1.** ● P16F0-00 - SPI Comm Hardware Fault. Customers may also experience one or more of the following: ● **The rear half shafts are damaged due to pressing the accelerator in drive with the Electric Parking Brake (EPB) applied. ● The Oxygen Sensor (02) can give wrong values when entering EV mode, triggering a false MIL. ● The Instrument Cluster Panel (ICP) unable to calculate the instantaneous fuel economy under heavy acceleration. ● Variable Speed Fuel Pump inoperative after refueling (no start).** ● Intelligent sign recognition is not working properly causing degradation in active speed limiting functionality (IAP Only). ● Shifts rough occasionally when coming down to a stop. ● Shifts rough occasionally when accelerating. ● Shifts rough when transitioning from EV to Hybrid operation on low SoC. ● Shifts rough when engines starts. ● On part throttle accelerations with little to no battery available the transition from battery power to engine on is harsh and abrupt. ● The engine oil life on dashboard drops down too fast when the engine oil dilution reaches high level without the ability to recover. This bulletin involves reprogramming the PCM, Transmission Control Module (TCM) and the Auxiliary Hybrid Control Processor (AHCP) also known as Power Inverter Module (PIM), with the latest available software."
21-030-242024-06-07. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. "Flash: Transmission Control Module (TCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):** ● P0810-00 - Clutch Position Control Error. ● P16F0-00 - SPI Comm Hardware Fault. Customers may also comment on one or more of the following: ● K0 Adaptation routine runs when vehicle stationary and EV Mode. ● Vehicle loses propulsion capability. ● Service transmission warning indicator is on. NOTE: Require key cycle to recover. ● Shifts rough occasionally when coming down to a stop. ● Shifts rough occasionally when accelerating. ● Shifts rough when transitioning from EV to Hybrid operation on low SoC. ● Shifts rough when engines starts. ● On part throttle accelerations with little to no battery available the transition from battery power to engine on is harsh and abrupt. ● The engine oil life on dashboard drops down too fast when the engine oil dilution reaches high level without the ability to recover. **This bulletin involves reprogramming the TCM with the latest available software.** NOTE: **Please be sure that the 04B recall is completed prior to performing this TSB. This TCM software update is covered by the 04B recall if still incomplete.**"
21003242024-03-18. Service bulletin. POWER TRAIN; EXTERIOR LIGHTING; ELECTRICAL SYSTEM. Flash: Transmission Control Module (TCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set in the Hybrid Control Processor (HCP) module: ? P16F0-00 - SPI Comm Hardware Fault. Customers may also comment on one or more of the following: ? Shifts rough occasionally when coming down to a stop. ? Shifts rough occasionally when accelerating. ? Shifts rough when transitioning from EV to Hybrid operation on low SoC. ? Shifts rough when engines starts. ? On part throttle accelerations with little to no battery available the transition from battery power to engine on is harsh and abrupt. ? The engine oil life on dashboard drops down too fast when the engine oil dilution reaches high level without the ability to recover. This bulletin involves reprogramming the TCM, Powertrain Control Module (PCM) and the Auxiliary Hybrid Control Processor (AHCP) also known as Power Inverter Module (PIM), with the latest available software.
18001242024-03-18. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set in the Hybrid Control Processor (HCP) module: ? P16F0-00 - SPI Comm Hardware Fault. Customers may also comment on one or more of the following: ? Shifts rough occasionally when coming down to a stop. ? Shifts rough occasionally when accelerating. ? Shifts rough when transitioning from EV to Hybrid operation on low SoC. ? Shifts rough when engines starts. ? On part throttle accelerations with little to no battery available the transition from battery power to engine on is harsh and abrupt. ? The engine oil life on dashboard drops down too fast when the engine oil dilution reaches high level without the ability to recover. This bulletin involves reprogramming the PCM, Transmission Control Module (TCM) and the Auxiliary Hybrid Control Processor (AHCP) also known as Power Inverter Module (PIM), with the latest available software.
08013242024-03-18. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; EXTERIOR LIGHTING. Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set in the Hybrid Control Processor (HCP) module: ? P16F0-00 - SPI Comm Hardware Fault. Customers may also comment on one or more of the following: ? Shifts rough occasionally when coming down to a stop. ? Shifts rough occasionally when accelerating. ? Shifts rough when transitioning from EV to Hybrid operation on low SoC. ? Shifts rough when engines starts. ? On part throttle accelerations with little to no battery available the transition from battery power to engine on is harsh and abrupt. ? The engine oil life on dashboard drops down too fast when the engine oil dilution reaches high level without the ability to recover. This bulletin involves reprogramming the Powertrain Control Module (PCM), Transmission Control Module (TCM) and the AHCP also known as Power Inverter Module (PIM), with the latest available software.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.