JEEP

18-083-26

Manufacturer communications

Publication date: 2026-10-10
Received by NHTSA: 2026-10-16
NHTSA record numbers: 11038503 · 11038540

Multiple filings of the same bulletin are grouped here; original record numbers remain available.

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):
• **P2237-00 - O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1.
• P2240-00 - O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1.
• P2251-00 - O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1.
• P2254-00 - O2 Sensor Negative Current Control Circuit/Open Bank 2 Sensor 1.
• P2243-00 - O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1.
• P2247-00 - O2 Sensor Reference Voltage Circuit/Open Bank 2 Sensor 1.
• P015B-00 - O2 Sensor Delayed Response - Lean To Rich Bank 1 Sensor 1.
• P015D-00 - O2 Sensor Delayed Response - Lean To Rich Bank 2 Sensor 1.
• P2AF6-00 - Starter Relay 3 Stuck Off.
• P0E7C-00 - Coolant Bypass Valve "B" Control Circuit Low.
• P0E7D-00 - Coolant Bypass Valve "B" Control Circuit High.
• P0E7E-00 - Coolant Bypass Valve "B" Control Circuit Range/Performance.
• P0E7F-00 - Coolant Bypass Valve "B" Control Circuit Stuck/Open.
• U063C-00 - Lost Communication With Coolant Bypass Valve Actuator "B".
• P0100-00 - Mass Or Volume Air Flow Sensor "A" Circuit.
• P0101-00 - Mass Or Volume Air Flow Sensor "A" Circuit Range/Performance.
• P0461-00 - Fuel Level Sensor "A" Circuit Range/performance.
• P0073-00 - Ambient Air Temperature Sensor Circuit "A" High.
• P0072-00 - Ambient Air Temperature Sensor Circuit "A" Low.
• P062B-00 - Internal Control Module Fuel Injector Control Performance.
• B1810-00 - Driver Door Shorted Low.
• B25C7-00 - Redundant Driver Door Shorted Low.**
• U0673-00 - Lost Communication With Ion Sense Module (in active or stored status).
• P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking (in active or stored status).
• P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected (in active or stored status). This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.

NHTSA manufacturer communications ↗