Home09-009-26 · JEEP
JEEP

09-009-26

Manufacturer communications

Publication date
2026-05-13
Received by NHTSA
2026-05-20
NHTSA record numbers
11032844

Manufacturer summary

Original wording in English

PHEV Engine Replacement XC2 Warranty Extension 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):
• P2336 - Cylinder 1 Above Knock/Combustion Vibration Sensor Threshold.
• P2337 - Cylinder 2 Above Knock/Combustion Vibration Sensor Threshold.
• P2338 - Cylinder 3 Above Knock/Combustion Vibration Sensor Threshold.
• P2339 - Cylinder 4 Above Knock/Combustion Vibration Sensor Threshold. The customer may also describe the following:
• A knocking noise from the engine compartment This bulletin involves replacing the engine.

NHTSA manufacturer communications ↗

Reported code forms

P2336P2337P2338P2339

Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

JeepP2336
Cylinder 1 Above Knock/Combustion Vibration Sensor Threshold

NHTSA 11032844

JeepP2337
Cylinder 2 Above Knock/Combustion Vibration Sensor Threshold

NHTSA 11032844

JeepP2338
Cylinder 3 Above Knock/Combustion Vibration Sensor Threshold

NHTSA 11032844

JeepP2339
Cylinder 4 Above Knock/Combustion Vibration Sensor Threshold

NHTSA 11032844

Check vehicle applicability

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

MakeModelModel year
JeepGRAND CHEROKEE2025
JeepGRAND CHEROKEE2024
JeepGRAND CHEROKEE2023
JeepGRAND CHEROKEE 4XE2025
JeepGRAND CHEROKEE 4XE2024
JeepGRAND CHEROKEE 4XE2023
JeepGRAND CHEROKEE L2025
JeepGRAND CHEROKEE L2024
JeepGRAND CHEROKEE L2023
JeepWRANGLER2025
JeepWRANGLER2024
JeepWRANGLER 4XE2025
JeepWRANGLER 4XE2024

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