[SOLVED] U1242 Code: Fixing Invalid Exterior Data For Your Car

The automobile fault code U1242 indicates a problem with a module that is not communicating properly.

This can cause the engine light to turn on, indicating a potential issue.

The cause of this fault code could be a faulty module, an open or shorted module harness, or a poor electrical connection in the module circuit.

It is important to visually inspect the wiring harness and connectors for any damage or corrosion.

The repair time for this issue is estimated to be around 1.0, and it is crucial to address this problem promptly to avoid any further damage to the vehicle. 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 (or Service Engine Soon Warning Light), it could be due to the u1242 fault code. Here are the symptoms to look out for:

  • The U1242 fault code in an automobile can cause several symptoms, including the engine light turning on or the service engine soon warning light appearing.
  • Other symptoms may include issues with the ABS system, problems with the speedometer or odometer, and difficulty shifting gears.
  • Additionally, the vehicle may experience a loss of power or acceleration, and the transmission may go into limp mode.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle.

The automobile fault code u1242 can be caused by a faulty module, open or shorted module harness, or poor electrical connection.

  • The automobile fault code U1242 can be caused by a faulty module that is not communicating.
  • It can also be caused by an open or shorted module harness.
  • Additionally, a poor electrical connection in the module circuit can also trigger this fault code.

To fix the u1242 automobile fault code, check the possible causes and inspect the related wiring harness, connectors, and components for damage.

  • To fix the automobile fault code u1242, first, check the possible causes listed above.
  • Then, visually inspect the related wiring harness and connectors.
  • Look for 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 U1242 can be diagnosed and fixed within an estimated repair time of 1.0 hour. The cost of repair is influenced by the repair time, which is commonly charged between $75 and $150 per hour by most auto repair shops. Therefore, the total cost of fixing the U1242 fault code will depend on the hourly rate charged by the repair shop and the estimated repair time required to fix the issue.

The U1242 fault code is related to the class 2 serial data circuit in automobiles. Modules in the circuit monitor for serial data communications during normal vehicle operation.

When a module does not associate an identification number with at least one critical parameter within 5 seconds of beginning serial data communication, the U1242 DTC is set.

This fault code specifically indicates invalid or missing data for exterior environment parameters.

What are the possible causes of the u1242 automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the u1242 fault code. This code is usually caused by a faulty module that is not communicating, an open or shorted module harness, or a poor electrical connection in the module circuit. To fix this issue, you should visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

How can I visually inspect the related wiring harness and connectors to fix the u1242 fault code?

If you’re experiencing the u1242 fault code, which is indicated by the engine light or service engine soon warning light turning on, there are a few things you can do to fix it. The cause of this issue could be a faulty module that isn’t communicating, an open or shorted module harness, or a poor electrical connection in the module circuit. To address these issues, you should visually inspect the related wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.

What are the signs of damaged components that I should look for when fixing the u1242 fault code?

If you’re fixing the u1242 fault code, keep an eye out for the engine light or service engine soon warning light turning on. This is a symptom of a faulty module that isn’t communicating, an open or shorted module harness, or a module circuit with poor electrical connection. To fix it, visually inspect the wiring harness and connectors, and check for damaged components. Look for broken, bent, pushed out, or corroded connector pins.

u1242 error fault code explained

If you see the Engine Light ON or Service Engine Soon Warning Light with the u1242 fault code, check for a faulty module that is not communicating, an open or shorted module harness, or a poor electrical connection in the module circuit. Visually inspect the wiring harness and connectors for damage, broken, bent, pushed out, or corroded pins.

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