U1248 – OBD-II DTC

OBD-II DTC U1248 – SCP (J1850) Invalid or Missing Data for Time / Date

DTC U1248 meaning

DTC U1248 refers to a diagnostic trouble code indicating an issue with the communication network in a vehicle, specifically related to the SCP (Single Wire CAN) protocol. This code signifies that there is invalid or missing data for the time and date, which can affect various systems that rely on accurate timekeeping for proper operation.

DTC U1248 symptoms

Common symptoms associated with DTC U1248 may include:

• Inaccurate time and date displayed on the vehicle’s dashboard.
• Malfunctioning of systems that depend on time-sensitive data.
• Potential issues with other diagnostic trouble codes being triggered.
• Loss of communication with certain modules in the vehicle.

DTC U1248 causes

Several factors can lead to the occurrence of DTC U1248, including:

• Faulty or damaged wiring in the SCP communication network.
• Defective or malfunctioning control modules.
• Corrosion or poor connections at the connectors.
• Software issues or bugs within the vehicle’s control systems.
• Battery voltage issues affecting module operation.

DTC U1248 seriousness

The seriousness of DTC U1248 can vary depending on the vehicle’s reliance on the affected systems. While it may not immediately affect drivability, it can lead to:

• Inaccurate system readings.
• Potential failure of other related systems.
• Increased difficulty in diagnosing other issues due to communication problems.

How to diagnose DTC U1248

To diagnose DTC U1248, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC U1248.
2. Check for any additional trouble codes that may provide more context.
3. Inspect the wiring and connectors associated with the SCP network for damage or corrosion.
4. Test the voltage and ground at the control modules involved.
5. Verify the functionality of the control modules by checking for proper communication.

How to fix DTC U1248 step-by-step instructions

To fix DTC U1248, follow these step-by-step instructions:

1. Inspect and repair any damaged wiring or connectors in the SCP network.
2. Clean any corroded connections to ensure good electrical contact.
3. Replace any faulty control modules that are not communicating properly.
4. Update the software in the control modules if necessary.
5. Clear the DTC using an OBD-II scanner and test drive the vehicle to see if the code returns.

How to erase DTC U1248

To erase DTC U1248, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “On” position without starting the engine.
3. Navigate to the “Erase Codes” or “Clear Codes” option on the scanner.
4. Confirm the action to erase the trouble codes.
5. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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