U3023
Control Module Input Power Circuit A - Ignition Input On/Start Circuit Correlation
U3023 is an OBD-II diagnostic trouble code meaning: Control Module Input Power Circuit A - Ignition Input On/Start Circuit Correlation. Common causes: damage to the power wiring harness, faulty ignition relay. Estimated repair cost: $6–167.
Symptoms
- Problems starting the engine
- Spontaneous shutdown of electronics
- Check Engine Light Is On
- Malfunctions of various vehicle systems
- Lost connection with diagnostic equipment
Causes
- Damage to the power wiring harness
- Faulty ignition relay
- Corrosion or poor contact in connectors
- Fuse problems
- Malfunction of the control module itself
How to Fix
- Check the condition of the power circuit fuses
- Inspect the wiring harness for damage
- Check the contacts in the control module connectors
- Test the ignition relay
- Diagnose the control module on the stand
Related codes
Error U3023 by Vehicle Brand
FAQ
What does the U3023 code mean?
U3023 is an OBD-II diagnostic trouble code that indicates: Control Module Input Power Circuit A - Ignition Input On/Start Circuit Correlation
What causes a U3023 error code?
The most common causes of U3023 include: Damage to the power wiring harness; Faulty ignition relay; Corrosion or poor contact in connectors; Fuse problems.
How do I fix a U3023 diagnostic trouble code?
To fix U3023: Check the condition of the power circuit fuses. Inspect the wiring harness for damage. Check the contacts in the control module connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U3023?
Do not drive — repair immediately
How much does it cost to fix U3023?
The estimated repair cost for U3023 is $6–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat