OBD Guide
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C2128

ECU Reset/Recovery Occurred

C2128 is an OBD-II diagnostic trouble code meaning: ECU Reset/Recovery Occurred. Common causes: ecu power interruptions, wiring harness fault. Estimated repair cost: $11–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$11–56 (est.)

Symptoms

  • Check Engine Light Flashing
  • Resetting the on-board computer settings
  • Unstable engine operation

Causes

  • ECU power interruptions
  • Wiring harness fault
  • ECU software failure
  • Battery or alternator problems

How to Fix

  1. Check the on-board voltage
  2. Inspect the ECU wiring harness for damage.
  3. Scan the ECU for other errors
  4. If necessary, update the ECU firmware

Related codes

P0600P0601P0602

FAQ

What does the C2128 code mean?

C2128 is an OBD-II diagnostic trouble code that indicates: ECU Reset/Recovery Occurred

What causes a C2128 error code?

The most common causes of C2128 include: ECU power interruptions; Wiring harness fault; ECU software failure; Battery or alternator problems.

How do I fix a C2128 diagnostic trouble code?

To fix C2128: Check the on-board voltage. Inspect the ECU wiring harness for damage.. Scan the ECU for other errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C2128?

Limited driving only, diagnose soon

How much does it cost to fix C2128?

The estimated repair cost for C2128 is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat