OBD Guide
ENFRDEESPT

C1990

New Control Module Initialization

C1990 is an OBD-II diagnostic trouble code meaning: New Control Module Initialization. Common causes: replacing the control module, interrupting the initialization procedure. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine Light Is On
  • Reduced engine performance
  • Certain vehicle systems do not work (for example, ABS or airbags)

Causes

  • Replacing the control module
  • Interrupting the initialization procedure
  • Module programming errors
  • Problems with wiring harness or power

How to Fix

  1. Connecting a diagnostic scanner
  2. Starting the initialization procedure for a new module
  3. Perform sensor calibration (if necessary)
  4. Checking the functionality of all systems
  5. Erasing the error code

Related codes

C1991C1992U0100U0121

FAQ

What does the C1990 code mean?

C1990 is an OBD-II diagnostic trouble code that indicates: New Control Module Initialization

What causes a C1990 error code?

The most common causes of C1990 include: Replacing the control module; Interrupting the initialization procedure; Module programming errors; Problems with wiring harness or power.

How do I fix a C1990 diagnostic trouble code?

To fix C1990: Connecting a diagnostic scanner. Starting the initialization procedure for a new module. Perform sensor calibration (if necessary). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1990?

Do not drive — repair immediately

How much does it cost to fix C1990?

The estimated repair cost for C1990 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat