OBD Guide
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C1621

Back Camera Power Supply Failure

C1621 is an OBD-II diagnostic trouble code meaning: Back Camera Power Supply Failure. Common causes: broken or damaged wiring harness, blown fuse. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$22–111 (est.)

Symptoms

  • Rear view camera does not work
  • There is a delay or no display on the display
  • Incorrect image display

Causes

  • Broken or damaged wiring harness
  • Blown fuse
  • Faulty relay
  • Damage to the rear view camera
  • Problems with the control unit

How to Fix

  1. Check the fuse associated with the rear view camera
  2. Inspect the wiring harness for damage
  3. Check the camera power relay
  4. Test the rear view camera for malfunctions
  5. Replace damaged components if necessary

Related codes

B1621C1622C1620

FAQ

What does the C1621 code mean?

C1621 is an OBD-II diagnostic trouble code that indicates: Back Camera Power Supply Failure

What causes a C1621 error code?

The most common causes of C1621 include: Broken or damaged wiring harness; Blown fuse; Faulty relay; Damage to the rear view camera.

How do I fix a C1621 diagnostic trouble code?

To fix C1621: Check the fuse associated with the rear view camera. Inspect the wiring harness for damage. Check the camera power relay. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1621?

Do not drive — repair immediately

How much does it cost to fix C1621?

The estimated repair cost for C1621 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat