Having a malfunctioning Dodge with code U1140 can be a daunting experience for any car owner. The code U1140 is a Lost Communication with Active Exhaust Valve 2, which is a problem that can be caused by many different issues. The purpose of the Active Exhaust Valves is to reduce exhaust noise in order to meet pass-by noise regulations and consists of two parts, the mechanical butterfly valves and the smart actuator that are connected to the mechanical valves. The causes of the malfunctioning of the Active Exhaust Valves can include an open or shorted B+ supply, an open or high resistance ground, an open or shorted LIN bus, or a malfunctioning active exhaust valve 2 actuator or powertrain control module. It is important to identify the root cause of the problem in order to fix it, and the related service bulletins can provide further insight. With the help of the Dodge Code U1140, car owners can take the necessary measures to get their vehicles running smoothly again.
Causes and Solutions for Dodge Code U1140
| Cause | Solution |
|---|---|
| ACTIVE EXHAUST VALVE 2 ACTUATOR FUSED B+ SUPPLY OPEN OR SHORTED | Check the wiring to the power supply, and replace any damaged components |
| ACTIVE EXHAUST VALVE 2 ACTUATOR GROUND OPEN/HIGH RESISTANCE | Check the wiring to the ground, and replace any broken or frayed wires |
| ACTIVE EXHAUST VALVE 2 ACTUATOR LIN BUS OPEN OR SHORTED | Check the LIN bus wiring and replace any damaged components |
| ACTIVE EXHAUST VALVE 2 ACTUATOR OR POWERTRAIN CONTROL MODULE | Replace the faulty actuator or powertrain control module |
ACTIVE EXHAUST VALVE 2 ACTUATOR FUSED B+ SUPPLY OPEN OR SHORTED
When a Dodge has code U1140, it means that the Active Exhaust Valve 2 Actuator has an open or shorted B+ supply. This problem can be caused by a variety of issues, such as a broken or frayed wire in the power supply. To fix this, car owners need to check the wiring to the power supply, and replace any damaged components.
ACTIVE EXHAUST VALVE 2 ACTUATOR GROUND OPEN/HIGH RESISTANCE
The Active Exhaust Valve 2 Actuator can also malfunction when the ground wire has an open or high resistance. This can be caused by a broken or frayed wire in the ground. To fix this, car owners need to check the wiring to the ground, and replace any broken or frayed wires.
ACTIVE EXHAUST VALVE 2 ACTUATOR LIN BUS OPEN OR SHORTED
When the LIN bus has an open or shorted, it can cause the Active Exhaust Valve 2 Actuator to malfunction. To fix this, car owners need to check the LIN bus wiring and replace any damaged components.
ACTIVE EXHAUST VALVE 2 ACTUATOR OR POWERTRAIN CONTROL MODULE
Sometimes the Active Exhaust Valve 2 Actuator or the Powertrain Control Module can be the cause of the malfunction. In this case, car owners need to replace the faulty actuator or powertrain control module.
Conclusion
In conclusion, the Dodge Code U1140 is a Lost Communication with Active Exhaust Valve 2, which is a problem that can be caused by many different issues. By understanding the causes and solutions for Dodge Code U1140, car owners can take the necessary measures to get their vehicles running smoothly again.
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