The automobile fault code U1140 indicates a problem with the Active Exhaust Valve Actuator.

The most common symptom is the Engine Light turning on. The cause of this issue could be a faulty actuator, an open or shorted harness, poor electrical connection, or a faulty Powertrain Control Module.

It is important to address this issue promptly as it can lead to decreased engine performance and fuel efficiency. The repair process involves visually inspecting the wiring harness and connectors for any damage or corrosion. The repair time for this issue is estimated to be around 1.0 hour.

To interpret the fault code, it is recommended to check the “Possible Causes” listed above and inspect the related components thoroughly.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you notice the Engine Light ON, it could be a sign of u1140 fault code.

Here are the symptoms to look out for:

  • The automobile fault code U1140 has several symptoms, including the engine light turning on, the service engine soon warning light appearing, and the vehicle’s engine running poorly.
  • Other symptoms may include difficulty starting the engine, reduced fuel efficiency, and a decrease in engine power.
  • Additionally, the vehicle may experience transmission shifting issues, and the speedometer may not function correctly.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle and ensure safe driving conditions.

The automobile fault code u1140 can be caused by a faulty actuator, poor electrical connection, or a faulty PCM.

  • The automobile fault code U1140 can be caused by a faulty Active Exhaust Valve Actuator.
  • It can also be caused by an open or shorted Active Exhaust Valve Actuator harness.
  • Poor electrical connection in the Active Exhaust Valve Actuator circuit can also trigger this fault code.
  • Lastly, a faulty Powertrain Control Module (PCM) can also be a cause of the U1140 fault code.

Below are the possible fixes for the automobile fault code u1140, including inspecting wiring harness and connectors for damage or corrosion.

  • To fix the automobile fault code u1140, first, check the possible causes listed above.
  • Then, visually inspect the related wiring harness and connectors.
  • Look for any damaged components and check for broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code U1140 can be diagnosed and fixed within an estimated repair time of 1.0 hour. The cost of repair is influenced by the hourly rate charged by the auto repair shop, which typically ranges between $75 and $150 per hour. Therefore, the total cost of fixing the U1140 fault code will depend on the hourly rate charged by the auto repair shop and the estimated repair time required to diagnose and fix the issue.

The u1140 fault code is a Diagnostic Trouble Code (DTC) that is set when the Powertrain Control Module (PCM) detects a loss of Local Interconnect Network (LIN) communication for more than 2.6 seconds.

This fault code specifically indicates that there is a lost communication with Active Exhaust Valve 2. When this fault code is detected, it means that there is a problem with the communication between the PCM and the Active Exhaust Valve 2. This can cause issues with the vehicle’s exhaust system and may result in decreased performance or other problems.

It is important to address this issue as soon as possible to prevent further damage to the vehicle.

What are the possible causes of the u1140 automobile fault code?

If you’re experiencing the u1140 automobile fault code, you may notice that your engine light is on or that the service engine soon warning light is illuminated. This code is typically caused by a faulty active exhaust valve actuator, an open or shorted actuator harness, a poor electrical connection in the actuator circuit, or a faulty powertrain control module (PCM). To fix the issue, it’s important to visually inspect the wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector pins.

How can I visually inspect the related wiring harness and connectors to fix the u1140 fault code?

If you’re experiencing an engine light or service engine soon warning light with a U1140 fault code, it could be due to a faulty active exhaust valve actuator, open or shorted actuator harness, poor electrical connection, or a faulty powertrain control module. To fix this issue, start by visually inspecting the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

Is a faulty Powertrain Control Module (PCM) a common cause of the u1140 fault code?

While a faulty Powertrain Control Module (PCM) is listed as a possible cause of the u1140 fault code, it is not a common cause. The most common cause of this code is a faulty Active Exhaust Valve Actuator or issues with its wiring harness and circuit connections. To fix the issue, it is recommended to visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

u1140 error fault code explained

If your engine light is on and you have a u1140 fault code, check for a faulty active exhaust valve actuator, open or shorted harness, poor electrical connection, or a faulty PCM.

Visually inspect the wiring harness and connectors for damage or corrosion.

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