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Service bulletins for the 2016 Jeep 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.

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

About P1720 on the 2016 Jeep 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: P1720 are shown. Show all

Bulletins, newest first
21014232023-08-21. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Power Transfer Unit (PTU) Broken Input Spline XJ1 Warranty Extension Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P1720-00 - Output Speed Sensor Wheel Speed Rationality. ? P215C-00 - Output Shaft Speed Wheel Speed Correlation. This bulletin involves replacing the PTU assembly with an updated part.
21017212023-01-17. Service bulletin. EXTERIOR LIGHTING; WHEELS; BACK OVER PREVENTION. Power Transfer Unit (PTU) Broken Input Spline - X89 Warranty Extension This bulletin involves replacing the PTU assembly with an updated part. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P1720-00 - Output Speed Sensor-Wheel Speed Rationality. P215C-00 - Output Shaft Speed Wheel Speed Correlation. The customer may also describe one or more of the following: Grinding noise coming from under the vehicle while driving. Vehicle will not move.
2101721-12023-01-17. Service bulletin. WHEELS; POWER TRAIN. Power Transfer Unit (PTU) Broken Input Spline - X89 Warranty Extension This bulletin involves replacing the PTU assembly with an updated part. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P1720-00 - Output Speed Sensor-Wheel Speed Rationality. P215C-00 - Output Shaft Speed Wheel Speed Correlation. The customer may also describe one or more of the following:Grinding noise coming from under the vehicle while driving. Vehicle will not move.
21017212022-10-17. Service bulletin. BACK OVER PREVENTION; WHEELS; POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); EXTERIOR LIGHTING. Power Transfer Unit (PTU) Broken Input Spline - X89 Warranty Extension This bulletin involves replacing the PTU assembly with an updated part. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P1720-00 - Output Speed Sensor-Wheel Speed Rationality. P215C-00 - Output Shaft Speed Wheel Speed Correlation. The customer may also describe one or more of the following: Grinding noise coming from under the vehicle while driving. Vehicle will not move.
2101721RevA2022-10-17. Service bulletin. EXTERIOR LIGHTING; BACK OVER PREVENTION; WHEELS; POWER TRAIN:TRANSMISSION CASE/HOUSING; POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). Power Transfer Unit (PTU) Broken Input Spline - X89 Warranty Extension This bulletin involves replacing the PTU assembly with an updated part. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P1720-00 - Output Speed Sensor-Wheel Speed Rationality. P215C-00 - Output Shaft Speed Wheel Speed Correlation. The customer may also describe one or more of the following:Grinding noise coming from under the vehicle while driving. Vehicle will not move.
21017212022-10-17. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Power Transfer Unit (PTU) Broken Input Spline - X89 Warranty Extension This bulletin involves replacing the PTU assembly with an updated part. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P1720-00 - Output Speed Sensor-Wheel Speed Rationality. P215C-00 - Output Shaft Speed Wheel Speed Correlation. The customer may also describe one or more of the following: Grinding noise coming from under the vehicle while driving. Vehicle will not move.
2101721REVA2022-10-17. Service bulletin. POWER TRAIN. Power Transfer Unit (PTU) Broken Input Spline - X89 Warranty Extension This bulletin involves replacing the PTU assembly with an updated part. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P1720-00 - Output Speed Sensor-Wheel Speed Rationality. P215C-00 - Output Shaft Speed Wheel Speed Correlation. The customer may also describe one or more of the following:Grinding noise coming from under the vehicle while driving. Vehicle will not move.
21-017-21 Rev. A2021-06-28. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Power Transfer Unit (PTU) Broken Input Spline - X89 Warranty Extension This bulletin involves replacing the PTU assembly with an updated part. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P1720-00 - Output Speed Sensor-Wheel Speed Rationality. P215C-00 - Output Shaft Speed Wheel Speed Correlation. The customer may also describe one or more of the following: Grinding noise coming from under the vehicle while driving. Vehicle will not move.
21-017-212021-06-28. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Power Transfer Unit (PTU) Broken Input Spline - X89 Warranty Extension This bulletin involves replacing the PTU assembly with an updated part. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P1720-00 - Output Speed Sensor-Wheel Speed Rationality. P215C-00 - Output Shaft Speed Wheel Speed Correlation. The customer may also describe one or more of the following:Grinding noise coming from under the vehicle while driving. Vehicle will not move.

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