OBD Guide
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U1005

Invalid Or Missing Data For EEC Programming

U1005 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For EEC Programming. Common causes: ecu firmware update failed, damage to data in the control unit memory. Estimated repair cost: ~$167.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
~$167 (est.)

Symptoms

  • Check Engine light comes on
  • Problems starting the engine
  • Reduced engine power
  • Unstable engine operation
  • Limitation of operating modes (limp mode)

Causes

  • ECU firmware update failed
  • Damage to data in the control unit memory
  • Problems with the CAN bus
  • Malfunction of the control unit itself
  • Incorrect programming after repair

How to Fix

  1. CAN bus diagnostics for communication errors
  2. Checking the ECU software version
  3. Re-downloading the correct software
  4. Checking the power supply and grounding of the ECU
  5. Repair only from an authorized dealer

Related codes

U1000U1001U1010

FAQ

What does the U1005 code mean?

U1005 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For EEC Programming

What causes a U1005 error code?

The most common causes of U1005 include: ECU firmware update failed; Damage to data in the control unit memory; Problems with the CAN bus; Malfunction of the control unit itself.

How do I fix a U1005 diagnostic trouble code?

To fix U1005: CAN bus diagnostics for communication errors. Checking the ECU software version. Re-downloading the correct software. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1005?

Limited driving only, diagnose soon

How much does it cost to fix U1005?

The estimated repair cost for U1005 is ~$167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat