OBD Guide
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U1248

Invalid Or Missing Data For Time / Date

U1248 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Time / Date. Common causes: malfunction of the main time synchronization module, real time clock module power problems. Estimated repair cost: $6–56.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • Incorrect time display on the dashboard
  • Resetting the date and time after turning off the ignition
  • Errors in the service event log
  • Time dependent functions not working

Causes

  • Malfunction of the main time synchronization module
  • Real Time Clock Module Power Problems
  • Damage to the CAN bus
  • Software failure of one of the modules
  • Time module backup battery drained

How to Fix

  1. Check and replace timing module backup battery
  2. Scan all modules for communication errors
  3. Check the integrity of the CAN bus
  4. Update the software of affected modules
  5. If necessary, replace the time synchronization module

Related codes

U1255U1262U1300

FAQ

What does the U1248 code mean?

U1248 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Time / Date

What causes a U1248 error code?

The most common causes of U1248 include: Malfunction of the main time synchronization module; Real Time Clock Module Power Problems; Damage to the CAN bus; Software failure of one of the modules.

How do I fix a U1248 diagnostic trouble code?

To fix U1248: Check and replace timing module backup battery. Scan all modules for communication errors. Check the integrity of the CAN bus. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1248?

Yes, but get it checked soon

How much does it cost to fix U1248?

The estimated repair cost for U1248 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat