OBD Guide
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C2304

Open Or Short Circuit In U Phase

C2304 is an OBD-II diagnostic trouble code meaning: Open Or Short Circuit In U Phase. Common causes: wire break in phase u circuit, short circuit in the circuit. Estimated repair cost: $111–556.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$111–556 (est.)

Symptoms

  • Power Loss
  • Rough engine operation
  • Malfunction indicator light comes on
  • Switching to emergency mode

Causes

  • Wire break in phase U circuit
  • Short circuit in the circuit
  • Motor fault
  • Inverter damage
  • Wiring Harness Problems

How to Fix

  1. Check the integrity of the wires in the phase U circuit
  2. Check the resistance of the motor windings
  3. Diagnose the inverter for faults
  4. Replace damaged components

Related codes

C2305C2306P0A00

FAQ

What does the C2304 code mean?

C2304 is an OBD-II diagnostic trouble code that indicates: Open Or Short Circuit In U Phase

What causes a C2304 error code?

The most common causes of C2304 include: Wire break in phase U circuit; Short circuit in the circuit; Motor fault; Inverter damage.

How do I fix a C2304 diagnostic trouble code?

To fix C2304: Check the integrity of the wires in the phase U circuit. Check the resistance of the motor windings. Diagnose the inverter for faults. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C2304?

Limited driving only, diagnose soon

How much does it cost to fix C2304?

The estimated repair cost for C2304 is $111–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat