01130 DTC Code: Understanding and Troubleshooting


The 01130 Diagnostic Trouble Code (DTC) is a common error encountered in the automotive industry. This code is associated with various vehicle components, such as the Engine Control Module (ECM), Transmission Control Module (TCM), or other control modules, depending on the make and model of the vehicle. In this article, we will delve deep into the details of the 01130 DTC code, its causes, symptoms, and possible solutions.

What is a DTC Code?

A Diagnostic Trouble Code (DTC) is a code generated by the onboard computer systems of a vehicle, commonly known as the OBD-II (On-Board Diagnostic) system. These codes are intended to help technicians and mechanics diagnose and identify issues with various vehicle systems. Each DTC corresponds to a specific issue or fault, allowing for a systematic approach to troubleshooting and repair.

Understanding the 01130 DTC Code

The 01130 DTC code is specifically related to a fault or malfunction in one or more control modules of the vehicle. These control modules, such as the ECM or TCM, communicate with each other through the Controller Area Network (CAN) bus system. The 01130 code indicates that there is a communication problem within this network, impeding the seamless exchange of data between the control modules.

Common Causes of the 01130 DTC Code

Several factors can lead to the generation of the 01130 DTC code. Let’s take a closer look at some of the common causes:

  1. Faulty Wiring or Connections: Poorly connected or damaged wiring harnesses, connectors, or terminals can disrupt the communication signals and trigger the 01130 code. Inspect the wires and connectors for any visible damage or loose connections.

  2. Faulty Control Module: A malfunction in any of the control modules, such as the ECM or TCM, can disrupt the communication flow and trigger the 01130 DTC code. In this case, you may need to replace the faulty module or have it repaired.

  3. CAN Bus System Issues: Problems within the CAN bus system, such as a short circuit, open circuit, or excessive resistance, can lead to the 01130 code. Carefully inspect the wiring and circuits associated with the CAN bus system to identify and resolve any issues.

  4. Electrical Interference: Electrical interference from aftermarket installations or damaged components, such as radio antennas or poorly shielded alternators, can disrupt the CAN bus signals and trigger the 01130 code. Identify and rectify any sources of electrical interference to resolve the issue.

Symptoms of the 01130 DTC Code

Identifying the symptoms associated with the 01130 DTC code can assist in diagnosing the problem. Some common symptoms include:

  1. Illuminated Check Engine Light (CEL): The primary indicator of the 01130 DTC code is the illumination of the CEL on the vehicle’s dashboard. This serves as a general warning that a fault has been detected and requires attention.

  2. Communication Failure: In some cases, the 01130 code may cause a loss of functionality in various vehicle systems. This can include the inability to start the engine, erratic shifting (in the case of transmission-related modules), or loss of access to specific vehicle features.

  3. Poor Fuel Economy: Depending on the nature of the fault, the 01130 code can result in decreased fuel efficiency. This can be due to an improper fuel-to-air ratio resulting from faulty sensor data or other control module malfunctions.

Troubleshooting and Fixing the 01130 DTC Code

Resolving the 01130 DTC code can be challenging, but a systematic approach can help pinpoint and address the underlying issue. Here are some steps to consider during the troubleshooting process:

  1. Scan the Codes: Begin by using a compatible OBD-II scanner to retrieve and document the specific DTC codes present in the system. This will help narrow down the diagnosis and ensure the focus remains on the 01130 code.

  2. Inspect Wiring and Connections: Thoroughly examine the wiring harnesses, connectors, and terminals associated with the control modules and CAN bus system. Look for any signs of damage, loose connections, or corrosion. Address any issues found.

  3. Check Control Modules: If the wiring and connections appear to be in good condition, inspect the associated control modules. Look for indications of fault or malfunction. In case of a faulty control module, replacing or repairing it may be necessary.

  4. Test CAN Bus System: Perform tests to evaluate the integrity of the CAN bus system. Check for short circuits, open circuits, or excessive resistance. Use a multimeter or specialized diagnostic equipment to measure voltage and continuity as needed.

  5. Resolve Electrical Interference: Identify and eliminate any sources of electrical interference that could disrupt the CAN bus system. Pay particular attention to aftermarket installations or damaged components known to cause such issues.

Frequently Asked Questions (FAQs)

Q1: Can I continue to drive my vehicle with the 01130 DTC code?

A1: It is generally recommended to avoid driving your vehicle when the Check Engine Light is illuminated, especially if accompanied by noticeable symptoms. Continuing to drive may worsen the underlying issue, potentially leading to further damage.

Q2: Can I clear the 01130 DTC code myself or does it require a professional?

A2: Clearing DTC codes is possible with an OBD-II scanner that has the capability to reset codes. However, note that clearing the code does not resolve the underlying issue. If the code reoccurs, it is advisable to seek professional assistance to diagnose and fix the problem.

Q3: How much does it cost to fix the 01130 DTC code?

A3: The cost of resolving the 01130 DTC code can vary widely depending on the cause of the issue and the specific repair required. Costs may vary depending on whether it involves replacing control modules, repairing wiring, or resolving other system-related problems. It is best to consult a qualified technician for an accurate estimate.

In conclusion, the 01130 DTC code is a communication-related fault that can occur in various control modules of a vehicle. Understanding the causes, symptoms, and troubleshooting steps outlined in this article can assist in identifying and resolving the issue. Remember to consult with professionals for accurate diagnosis and appropriate repairs to ensure the safe and optimal performance of your vehicle.

About author


Meet Sam Mitchell, your experienced and reliable guide in the complex world of car fault codes. With a robust career spanning over 15 years as a professional car mechanic, John has the skills, knowledge, and practical experience to help you navigate car fault issues with confidence.


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