Home18-005-26 REV.A · JEEP
JEEP

18-005-26 REV.A

Manufacturer communications

Publication date
2026-02-17
Received by NHTSA
2026-03-05
NHTSA record numbers
11029673

Manufacturer summary

Original wording in English

Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):
• P08A6 - Gear Lever Position Sensor System – Multiple Sensor Correlation. (Manual Transmission and NA Only)
• P152F - Engine Hood Switch 2 / Engine Hood Switch 1 Correlation. (NA Only)
• P0300 - Multiple Cylinder Misfire. Customers may also comment on one or more of the following:
• "Service Transmission” message on in the Instrument Panel Cluster (IPC) due to clutch slip detection. (Manual Transmission and NA Only) NOTE: Customers might experience wheel spin or slippage and the PCM could interpreted the wheel spin or slippage as slipping the clutch too much and to avoid clutch damage, the customer may see the message in the IPC.
• Vehicle is in limp home mode.(NA Only)
• Spark knock/detonation sound from the engine at idle. Other software enhancements included:
• Engine oil pump in high pressure mode with cold engine oil to improve valvetrain component reliability. (NA Only) This bulletin involves reprogramming the PCM with the latest available software.

NHTSA manufacturer communications ↗

Reported code forms

Manufacturer wording

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

Check vehicle applicability

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

MakeModelModel year
JeepWRANGLER2021

Data coverage →