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Service bulletin 18-008-25

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)
TypeService bulletin
NHTSA id11014739
Published by NHTSA2025-03-04
Manufacturer's number18-008-25
Manufacturer's date2025-03-01
NHTSA componentENGINE; POWER TRAIN
Manufacturer's systemPowertrain Control Module

NHTSA's summary

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): ● P0032 - O2 - Sensor 1/1 Heater Circuit High. ● P0038 - O2 - Sensor 1/2 Heater Circuit High. ● P0052 - O2 - Sensor 2/1 Heater Circuit High. ● P0058 - O2 - Sensor 2/2 Heater Circuit High. ● P1129 - Closed Loop Fueling Not Achieved-Banks 2 Upstream. ● P0152 - O2 Sensor 2/1 Circuit High. ● P0158 - O2 Sensor 2/2 Circuit High. ● P2504 - Charging System Output High. ● P0563 - System Voltage High. Customers may also comment on one or more of the following: ● Vehicle runs rough. ● ""Service Transmission” message on in the Instrument Panel Cluster (IPC) due to clutch slip detection with the transfer case in neutral. ● During flat tow - Transfer case mis-shift (engine running and clutch pedal up, transmission in gear). Other software enhancements included: ● Improvements to address vehicle no starts after replacing the PCM. ● O2 heater crack improvements. ● OBD software changes. This bulletin involves reprogramming the PCM with the latest available software"

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

Engine, Transmission and driveline

Trouble codes named

P0032, P0038, P0052, P0058, P0152, P0158, P0563, P1129, P2504

Vehicles listed
JEEP WRANGLER2024

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

Recalls for the same vehicles and component
20256172025-11-06. Engine
25V7660002025-11-06. ENGINE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
S26210000042026-10-07. Service bulletin. The Customer May Complain About a Popping Noise, Grinding Noise, or an Intermittent No Reverse or Forward Transmission Engagement. The Tech May Find Damaged and/or Worn Transmission Output Shaft Splines (850RE Transmission Only)
1147412026-09-30. Service bulletin. TRANSMISSION KIT - WITH TORQUE CONVERTER
S26090000112026-09-17. Service bulletin. MIL-On and/or Engine Oil Leak
9100363 Rev 32026-09-03. Service bulletin. Turbocharger Kit Please note that many turbo components are serviceable separately and full turbo replacement may not be required. If the turbo is being inspected for: Noise/Rattle: Inspect heat shield fasteners for looseness and check the wastegate actuator/linkage for binding. The actuator kit is serviced separately. Oil Leak: Inspect the turbo oil feed O-ring area for leaks. O-ring is serviced separately.
1132712026-07-18. Service bulletin. CORE – HEATER
1132702026-07-18. Service bulletin. CORE – HEATER
1131532026-07-08. Service bulletin. THERMOSTAT – NONE.
1131522026-07-08. Service bulletin. THERMOSTAT – NONE.
1126392026-07-08. Service bulletin. THROTTLE BODY – NONE
1126402026-07-08. Service bulletin. THROTTLE BODY – NONE