[SOLVED] Dodge U0140 Code: Resolve Body Control Module Communication Loss

The OBD code U0140 for Dodge indicates a communication error between the Body Control Module (BCM) and the Powertrain Control Module (PCM).

Symptoms include the Engine Light being ON.

The issue is often caused by a faulty BCM, open/shorted BCM harness, or poor electrical connection.

It is a moderate issue.

To fix, inspect the BCM wiring harness and connectors for damage or corrosion.

Repair Importance Level	10.0 (Out of 10)
Estimated Repair Time	Approximately 1.0 hour
Repair Difficulty Level	10.0 (Out of 10)

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Symptoms of the Dodge u0140 OBD Code

The Dodge U0140 fault code typically triggers when there is a communication issue with the body control module.

Symptoms: Service Engine Soon Warning Light ON.
Loss of communication with body control module.
Possible issues with the vehicle’s network communication system.

Causes of the Dodge u0140 OBD Code

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Possible reasons for Dodge U0140 include communication issues within the body control module network.

U0140 can be caused by a faulty Body Control Module.
A Body Control Module harness that is open or shorted.
A Body Control Module circuit with a poor electrical connection.

Fixing Dodge Error Code u0140 Step By Step

Resolve Dodge U0140 by inspecting the wiring harness for potential damage or loose connections.

To fix the Dodge OBDII code U0140, start by reviewing the possible causes mentioned above.
Visually examine the wiring harness and connectors related to the Body Control Module (BCM).
Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
If no visible issues are found, perform a BCM reset using a scan tool.
Test the BCM for proper operation after the reset.
If the problem persists, consider replacing the BCM with a new one and program it to the vehicle as needed.

Cost Of Fixing Dodge u0140 Fault Code

The repair for Dodge U0140 may involve diagnosing and fixing communication issues in the vehicle.

The cost to diagnose and fix Dodge OBD code U0140 typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.

Costs depend on labor rates, shop location, and the complexity of the repair needed.

Details of the Dodge u0140 OBD Code

Dodge U0140 code indicates a lost communication with the body control module.

Dodge OBD code U0140 means Lost Communication With Body Control Module.

This code is triggered when the Powertrain Control Module (PCM) detects a loss of communication with the Body Control Module (BCM) over the Controller Area Network (CAN) bus.

The BCM is responsible for various body functions such as interior lighting, power windows, and door locks.

When communication is lost between the PCM and BCM, code U0140 is set, indicating a potential issue with the network or one of the modules.

Mechanic’s Tech Notes

Detailed information on diagnosing and repairing Dodge code U0140 communication error between body control module and instrument cluster.

To diagnose and fix OBDII code U0140 in a Dodge, start by checking the Transmission Control Module (TCM) power and ground using a multimeter.

Verify TCM communication over the Controller Area Network (CAN) network with a scan tool.

If the TCM does not respond, reprogramming or reflashing may be necessary.

Visually inspect the wiring harness and connectors for any damage, focusing on broken, bent, or corroded pins.

Ensure all connections are secure.

If the issue persists, consider consulting a professional for further diagnosis and repair.

FAQ

1. What does OBD code U0140 indicate in a Dodge vehicle?

OBD code U0140 in a Dodge indicates a communication error with the Body Control Module. Check for faulty module, wiring issues, or poor connections.

2. How can I diagnose the root cause of code U0140 in my Dodge?

To diagnose code U0140 in a Dodge, with symptoms of Engine Light ON, check for a faulty Body Control Module, open/shorted harness, or poor electrical connection. Inspect wiring and connectors.

3. What are the common symptoms associated with OBD code U0140 in a Dodge vehicle?

Common symptoms of OBD code U0140 in a Dodge vehicle include Engine Light ON, caused by issues with the Body Control Module or related wiring. Fix: Inspect and repair wiring/connectors.

Wrap Up

If your Dodge is displaying OBD code U0140 and experiencing issues with the vehicle’s communication network, it could be caused by faulty modules, damaged wiring, loose connections, or a low battery voltage.

This code typically indicates a loss of communication between control modules in the vehicle.

To address Dodge OBD code U0140, start by checking the wiring harness for any visible damage or corrosion.

Inspect the connectors for a secure fit and ensure there are no bent pins.

Test the battery voltage to ensure it meets the manufacturer’s specifications.

If necessary, replace any faulty modules or repair damaged wiring to