What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P040BExhaust Gas Recirculation Temperature Sensor 1 Circuit Performance(3.6L Only)P040BExhaust Gas Recirculation Temperature Sensor 1 Circuit Performance(2017 MY with a 3.6L Only)Manufacturer communications
4Original wording in English
DODGE, JEEP
Reported code forms P040B
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further…
DODGE, JEEP
Reported code forms P040B
Flash: Powertrain Diagnostic and System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp…
DODGE, JEEP
Reported code forms P040B
Flash: Powertrain Diagnostic and System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp…
DODGE, JEEP
Reported code forms P040B
EGR Temperature Sensor This Tech Tip applies to 2016MY Jeep Grand Cherokee (WK) and Dodge Durango (WD) with the 3.6L Pentastar engine (ERC)~ Prior to replacing a component due to any of the following DTCs - P0401,…
Check vehicle applicability
2A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Jeep | GRAND CHEROKEE | 2017 |
| Jeep | GRAND CHEROKEE | 2016 |
Historical records · 8 · Historical vehicle association; OBD-II compatibility is not established by this record.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.