JEEP
18-007-26 REV B
Manufacturer communications
- Publication date
- 2026-04-17
- Received by NHTSA
- 2026-04-22
- NHTSA record numbers
- 11031449
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):
• **P0301 - Cylinder 1 Misfire (Active or Stored status set during cold start catalyst heating).
• P0302 - Cylinder 2 Misfire (Active or Stored status set during cold start catalyst heating).
• P0303 - Cylinder 3 Misfire (Active or Stored status set during cold start catalyst heating).
• P0304 - Cylinder 4 Misfire (Active or Stored status set during cold start catalyst heating).
• P0305-00 - Cylinder 5 Misfire (Active or Stored status set during cold start catalyst heating).
• P0306-00 - Cylinder 6 Misfire (Active or Stored status set during cold start catalyst heating).**
• P0300 - Multiple Cylinder Misfire.
• P0032 - O2-Sensor 1/1 Heater Circuit High.
• P0038-02 - O2-Sensor 1/2 Heater Circuit High.
• P0052-02 - O2-Sensor 2/1 Heater Circuit High.
• P0058-02 - O2-Sensor 2/2 Heater Circuit High.
• P0132-02 - O2 Sensor 1/1 Circuit High.
• P0138-02 - O2 Sensor 1/2 Circuit High.
• P0152-02 - O2 Sensor 2/1 Circuit High.
• P0158-02 - O2 Sensor 2/2 Circuit High.
• P2100 - Electronic Throttle Control Motor Circuit.
• P2107 - Electronic Throttle Control Module Processor.
• P0129 - Barometric Pressure Out Of Range Low. China Market Only
• P08A6 - Gear Lever Position Sensor System - Multiple Sensor Correlation. (Manual Transmission Only).
• P152F - Engine Hood Switch 2 / Engine Hood Switch 1 Correlation.
• P1129 - Closed Loop Fueling Not Achieved - Bank 2 Upstream. Customers may also comment on one or more of the following:
• **The vehicle has a rough idle.
• The engine has a miss.
• Noisy valvetrain.** J18 FSAR-TSB-7200 -2-
• "Service Transmission" message in the Instrument Panel Cluster (IPC) due to clutch slip detection with the transfer case in neutral (Manual Transmission Only). NOTE: Customers might experience wheel spin or slippage and the PCM could
• **P0301 - Cylinder 1 Misfire (Active or Stored status set during cold start catalyst heating).
• P0302 - Cylinder 2 Misfire (Active or Stored status set during cold start catalyst heating).
• P0303 - Cylinder 3 Misfire (Active or Stored status set during cold start catalyst heating).
• P0304 - Cylinder 4 Misfire (Active or Stored status set during cold start catalyst heating).
• P0305-00 - Cylinder 5 Misfire (Active or Stored status set during cold start catalyst heating).
• P0306-00 - Cylinder 6 Misfire (Active or Stored status set during cold start catalyst heating).**
• P0300 - Multiple Cylinder Misfire.
• P0032 - O2-Sensor 1/1 Heater Circuit High.
• P0038-02 - O2-Sensor 1/2 Heater Circuit High.
• P0052-02 - O2-Sensor 2/1 Heater Circuit High.
• P0058-02 - O2-Sensor 2/2 Heater Circuit High.
• P0132-02 - O2 Sensor 1/1 Circuit High.
• P0138-02 - O2 Sensor 1/2 Circuit High.
• P0152-02 - O2 Sensor 2/1 Circuit High.
• P0158-02 - O2 Sensor 2/2 Circuit High.
• P2100 - Electronic Throttle Control Motor Circuit.
• P2107 - Electronic Throttle Control Module Processor.
• P0129 - Barometric Pressure Out Of Range Low. China Market Only
• P08A6 - Gear Lever Position Sensor System - Multiple Sensor Correlation. (Manual Transmission Only).
• P152F - Engine Hood Switch 2 / Engine Hood Switch 1 Correlation.
• P1129 - Closed Loop Fueling Not Achieved - Bank 2 Upstream. Customers may also comment on one or more of the following:
• **The vehicle has a rough idle.
• The engine has a miss.
• Noisy valvetrain.** J18 FSAR-TSB-7200 -2-
• "Service Transmission" message in the Instrument Panel Cluster (IPC) due to clutch slip detection with the transfer case in neutral (Manual Transmission Only). NOTE: Customers might experience wheel spin or slippage and the PCM could
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Jeep
P0032O2-Sensor 1/1 Heater Circuit HighJeep
P0038-02O2-Sensor 1/2 Heater Circuit HighJeep
P0052-02O2-Sensor 2/1 Heater Circuit HighJeep
P0058-02O2-Sensor 2/2 Heater Circuit HighJeep
P0129Barometric Pressure Out Of Range LowJeep
P0132-02O2 Sensor 1/1 Circuit HighJeep
P0138-02O2 Sensor 1/2 Circuit HighJeep
P0152-02O2 Sensor 2/1 Circuit HighJeep
P0158-02O2 Sensor 2/2 Circuit HighJeep
P0300Multiple Cylinder MisfireJeep
P0301Cylinder 1 Misfire (Active or Stored status set during cold start catalyst heating)Jeep
P0302Cylinder 2 Misfire (Active or Stored status set during cold start catalyst heating)Jeep
P0303Cylinder 3 Misfire (Active or Stored status set during cold start catalyst heating)Jeep
P0304Cylinder 4 Misfire (Active or Stored status set during cold start catalyst heating)Jeep
P0305-00Cylinder 5 Misfire (Active or Stored status set during cold start catalyst heating)Jeep
P0306-00Cylinder 6 Misfire (Active or Stored status set during cold start catalyst heating)Jeep
P08A6Gear Lever Position Sensor System - Multiple Sensor CorrelationJeep
P1129Closed Loop Fueling Not Achieved - Bank 2 UpstreamJeep
P152FEngine Hood Switch 2 / Engine Hood Switch 1 CorrelationJeep
P2100Electronic Throttle Control Motor CircuitCheck vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Jeep | GLADIATOR | 2022 |