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Service bulletin 0901423

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 id10243284
Published by NHTSA2023-10-02
Manufacturer's number0901423
Manufacturer's date2023-08-29
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Cylinder Head Screw Not Specific Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set: ? P1212 - Engine Oil Temperature High - RPM Limited. Customers may also experience the following: ? Engine overheating. This bulletin involves inspecting and if necessary replacing the cylinder head-to-block fasteners.

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

Trouble codes named

P1212

Vehicles listed
JEEP COMPASS2023
JEEP RENEGADE2023

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
18-081-262026-10-16. Service bulletin. Not applicable to vehicles built for US market. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● P0607 - Control Module Performance. Customers may also comment on one or more of the following: ● The vehicle will not start until the ignition is cycled for a second time. ● Engine malfunction (injection) warning lamp illuminated in the Instrument Panel Cluster (IPC). This bulletin involves reprogramming the PCM with the latest available software.
18-080-262026-10-16. Service bulletin. Not applicable to vehicles built for US market. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● P0607 - Control Module Performance. Customers may also comment on one or more of the following: ● The vehicle will not start until the ignition is cycled for a second time. ● Engine malfunction (injection) warning lamp illuminated in the Instrument Panel Cluster (IPC). This bulletin involves reprogramming the PCM with the latest available software.
18-081-262026-10-16. Service bulletin. Not applicable to vehicles built for US market. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● P0607 - Control Module Performance. Customers may also comment on one or more of the following: ● The vehicle will not start until the ignition is cycled for a second time. ● Engine malfunction (injection) warning lamp illuminated in the Instrument Panel Cluster (IPC). This bulletin involves reprogramming the PCM with the latest available software.
18-080-262026-10-16. Service bulletin. Not applicable to vehicles built for US market. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● P0607 - Control Module Performance. Customers may also comment on one or more of the following: ● The vehicle will not start until the ignition is cycled for a second time. ● Engine malfunction (injection) warning lamp illuminated in the Instrument Panel Cluster (IPC). This bulletin involves reprogramming the PCM with the latest available software.
S26090000112026-09-17. Service bulletin. MIL-On and/or Engine Oil Leak
09-022-262026-09-10. Service bulletin. Not applicable to vehicles built for US market. Right Engine Insulator Noise **Customers may comment on the following:** SYMPTOM: ● Metallic clicking noises when when moving the vehicle forward and reverse. **This bulletin involves replacing the right engine insulator.**
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.
09-018-262026-08-13. Service bulletin. Not applicable to vehicles built for US market. Cylinder Head Screw Not Specific Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● P1212 - Engine Oil Temperature High - RPM Limited. Customers may also experience the following: ● Engine overheating. This bulletin involves replacing the cylinder head to block bolts and head gasket.
07-005-262026-07-29. Service bulletin. Not applicable to vehicles built for US market. M1 H1 Coolant Leak Customers may comment on one or more of the following: SYMPTOM: ● Possible overheat light on instrument cluster. ● Coolant leak from hose that contacts exhaust heat shield. This bulletin involves replacing an engine coolant hose.
S26090000102026-07-08. Service bulletin. Mis-Machined Engine Block