Service bulletin 18-014-21 REV. A

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10188826
Published by NHTSA	2021-03-15
Manufacturer's number	18-014-21 REV. A
Manufacturer's date	2021-02-26
NHTSA component	POWER TRAIN

NHTSA's summary

Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) have been set:P2110 - Electronic Throttle Control System Bank 1 - Forced Limited RPM. P2173 - High Airflow/Vacuum Leak Detected (Slow Accumulation).

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Trouble codes named

P2110, P2173

Vehicles listed
JEEP RENEGADE	2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
21-042-26 REV. B	2026-09-23. Service bulletin. Not applicable to vehicles built for US market. 1.5L Transmission Diagnosis Service Solution Customers may experience one or more of the following: SYMPTOM: ● Transmission warning light on and/or vehicle jerking. ● Vehicle is not shifting correctly or has no traction. This service bulletin is to provide a diagnostic guide for a transmission warning light on, vehicle jerking, not shifting correctly or no traction symptoms
21-042-26 REV. A	2026-07-08. Service bulletin. Not applicable to vehicles built for US market. 1.5L Transmission Diagnosis Service Solution Customers may experience one or more of the following: SYMPTOM: ● Transmission warning light on and/or vehicle jerking. ● Vehicle is not shifting correctly or has no traction. This service bulletin is to provide a diagnostic guide for a transmission warning light on, vehicle jerking, not shifting correctly or no traction symptoms.
21-042-26	2026-06-03. Service bulletin. Not applicable to vehicles built for US market. 1.5L Transmission Diagnosis Service Solution Customers may experience one or more of the following: ● Transmission warning light on and/or vehicle jerking. ● Vehicle is not shifting correctly or has no traction This service bulletin is to provide a diagnostic guide for a transmission warning light on, vehicle jerking, not shifting correctly or no traction symptoms.
08-204-26	2026-05-20. Service bulletin. Not applicable to vehicles built for US market. Vehicle Does Not Operate In Electric Mode And/Or Reverse Gear Is Unavailable Customers may experience one or more of the following: ● The vehicle does not operate in electric mode. ● Reverse gear is not available.
08-204-26	2026-05-13. Service bulletin. Not applicable to vehicles built for US market. Vehicle Does Not Operate In Electric Mode And/Or Reverse Gear Is Unavailable Customers may experience one or more of the following: ● The vehicle does not operate in electric mode. ● Reverse gear is not available.
21-040-25	2025-10-08. Service bulletin. 948TE Transmission Reaction Shaft Service Bushing Kit Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● P1DB7-00 - Torque Converter Clutch Performance.
09-005-25	2025-03-25. Service bulletin. "Various Models - Engine Valley Cap (Flywheel Side) - Oil Leakage - Service Solution Customers may experience the following: ● Oil leaks from the engine compartment, engine/transmission coupling. This bulletin supersedes Technical Service Bulletin (TSB) 09-021-24, date of issue November 23, 2024, which should be removed from your files. All revisions are highlighted with asterisks and include new Labor Times."
0804323	2024-01-02. Service bulletin. Power Folding Mirror Inoperative The customer may describe the power folding mirrors may intermittently not power fold or unfold. This bulletin involves replacing the power folding mirror/window switch assembly on the door.
1809723	2023-10-02. Service bulletin. Powertrain Control Module (PCM) Replacement Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs): ? U0100-00 - Lost Communication with Engine Control Module (ECM). ? U1701-87 - Engine Control Module (ECM) - Missing message. Customer may also experience: ? Vehicle no start condition. This bulletin involves replacement of the PCM for a possible no start condition.
0804323	2023-09-25. Service bulletin. Power Folding Mirror Inoperative The customer may describe the power folding mirrors may intermittently not power fold or unfold. This bulletin involves replacing the power folding mirror/window switch assembly on the door.