U3505
Control Module Input Power B Circuit Low
U3505 is an OBD-II diagnostic trouble code meaning: Control Module Input Power B Circuit Low. Common causes: poor contact in the control unit connectors, broken or damaged wires in the power circuit. Estimated repair cost: $6–56.
Symptoms
- Unstable operation of electronic systems
- Intermittent engine malfunctions
- Check Engine Light Illuminates
- Problems starting the engine
- Disabling certain vehicle functions
Causes
- Poor contact in the control unit connectors
- Broken or damaged wires in the power circuit
- Faulty power relay
- Fuse problems
- Malfunction of the control unit itself
How to Fix
- Check the condition of the power circuit fuses
- Inspect the connectors and contacts of the control unit
- Check the integrity of the wiring in the power circuit
- Test the power relay
- Check the voltage at the input of the control unit
Related codes
Error U3505 by Vehicle Brand
FAQ
What does the U3505 code mean?
U3505 is an OBD-II diagnostic trouble code that indicates: Control Module Input Power B Circuit Low
What causes a U3505 error code?
The most common causes of U3505 include: Poor contact in the control unit connectors; Broken or damaged wires in the power circuit; Faulty power relay; Fuse problems.
How do I fix a U3505 diagnostic trouble code?
To fix U3505: Check the condition of the power circuit fuses. Inspect the connectors and contacts of the control unit. Check the integrity of the wiring in the power circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U3505?
Limited driving only, diagnose soon
How much does it cost to fix U3505?
The estimated repair cost for U3505 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat