OBD Guide
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B1080

Power Supply Circuit Input Error For Relay Control Module And MICU

B1080 is an OBD-II diagnostic trouble code meaning: Power Supply Circuit Input Error For Relay Control Module And MICU. Common causes: broken or damaged wiring harness, short circuit in power supply. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Inoperability of individual electrical systems (for example, lighting, power windows)
  • Problems starting the engine
  • Dashboard flashing or turning off

Causes

  • Broken or damaged wiring harness
  • Short circuit in power supply
  • Faulty relay or fuse
  • Damage to the MICU module

How to Fix

  1. Check fuses and relays in the power circuit
  2. Inspect the wiring harness for damage
  3. Check the voltage in the power circuit
  4. Replace MICU or relay if necessary

Related codes

B1075B1085B1090

FAQ

What does the B1080 code mean?

B1080 is an OBD-II diagnostic trouble code that indicates: Power Supply Circuit Input Error For Relay Control Module And MICU

What causes a B1080 error code?

The most common causes of B1080 include: Broken or damaged wiring harness; Short circuit in power supply; Faulty relay or fuse; Damage to the MICU module.

How do I fix a B1080 diagnostic trouble code?

To fix B1080: Check fuses and relays in the power circuit. Inspect the wiring harness for damage. Check the voltage in the power circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1080?

Limited driving only, diagnose soon

How much does it cost to fix B1080?

The estimated repair cost for B1080 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat