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DODGE

18-035-26

Manufacturer communications

Publication date
2026-02-28
Received by NHTSA
2026-03-05
NHTSA record numbers
11029760

Manufacturer summary

Original wording in English

Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation SYMPTOM: the technician must find one or more of the following Diagnostic Trouble Codes (DTCs) have been set:
• P0300 - Multiple Cylinder Misfire.
• P0301 - Cylinder 1 Misfire.
• P0302 - Cylinder 2 Misfire.
• P0303 - Cylinder 3 Misfire.
• P0304 - Cylinder 4 Misfire.
• P0305 - Cylinder 5 Misfire.
• P0306 - Cylinder 6 Misfire.
• P0307 - Cylinder 7 Misfire.
• P0308 - Cylinder 8 Misfire.
• P0420 - Catalyst System Efficiency Below Threshold Bank 1.
• P0430 - Catalyst System Efficiency Below Threshold Bank 2. Customers may comment on or experience the following:
• A rough idle condition. This bulletin involves reprogramming the PCM with the latest available software.

NHTSA manufacturer communications ↗

Reported code forms

P0300P0301P0302P0303P0304P0305P0306P0307P0308P0420P0430

Manufacturer wording

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

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MakeModelModel year
DodgeCHALLENGER2023

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