C1130 Code: Engine Signal 1

On-board diagnostic (OBD) codes are designed to help mechanics and vehicle owners like you identify possible issues with your vehicle. But before attempting any fixes to resolve the codes retrieved by your scan tool, it’s important to know exactly what they mean.

Code C1130 is one of many trouble codes that can be logged and retrieved from the OBD system. Discover what this code might mean for your vehicle.

What Does the C1130 Code Mean?

Diagnostic trouble code (DTC) C1130 stands for “Engine Signal 1.”

C1130 is an antilock brake system (ABS) DTC that indicates that an output signal of the powertrain control module (PCM) is not recognized. Absent or incorrect PCM signals that are indicated by corresponding P-codes can trigger C1130 in the ABS control unit. Absent or incorrect PCM signals can affect vehicle features like forward emergency braking (FEB), intelligent cruise control (ICC), and VDC/ABS/TCS.

Depending on the severity of the problem, related error codes can also be stored with this DTC.

Note: The definition of code C1130 can differ depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the C1130 Code?

• Faulty PCM
• A bad sensor in the engine management system
• Faulty ABS control module
• Data network problems
• Circuit issues, such as a blown fuse or damaged wire

What are the Common Symptoms of the C1130 Code?

• Illuminated check engine light
• Activated anti-lock brake system (ABS) warning light

How to Diagnose the C1130 Code

Error code C1130 is a generic code that can be set across several makes and models. However, this does not mean that there is a one-size-fits-all approach to diagnosing its underlying cause. The steps for troubleshooting this code will vary depending on your vehicle’s make and model.

PCM-related DTCs (P-codes) must be diagnosed, repaired, and erased first before addressing the C1130 code. Check out this video to get an idea of what the diagnostic process for code C1130 might involve:

How to Fix the C1130 Code

C1130 can share similar triggers and symptoms with other fault codes. However, that does not mean that they share repair steps as well. All vehicles are different, so make sure to refer to a factory repair guide that is specific to your car.

If you’re considering addressing this code by yourself, it’s a good idea to refresh your auto repair knowledge before attempting any fixes. Consult a vehicle-specific repair manual or an online repair database. These resources can provide the appropriate diagnostic and repair procedures for this code. Alternatively, you can leave this job to a professional.

How to Get a Replacement ECM for Your Vehicle

First order of business: stop driving your car if you have a faulty ECM. A damaged ECM is likely to cause poor engine performance, bad fuel economy, and a handful of other issues that can damage your engine. You should avoid driving your vehicle until you replace your ECM. Luckily, getting a replacement ECM is fast and easy with CarParts.com. 

CarParts.com offers a wide selection of ECMs, all sourced from the most trusted manufacturers in the industry. Be sure to use our vehicle selector and search filters, so you can easily browse available parts that are compatible with your ride. You can also expect your new ECM to arrive in as fast as two business days, thanks to our strategically located warehouses in the US. Just order by 12 p.m. ET.

Don’t wait until your faulty ECM leads to other costly engine damage. Check out our catalog of high-quality ECMs and ABS control modules at CarParts.com today.