U3504
Control Module Input Power B Circuit Range/Performance
U3504 is an OBD-II diagnostic trouble code meaning: Control Module Input Power B Circuit Range/Performance. Common causes: poor contact in module connectors, blown power fuse. Estimated repair cost: $17–89.
Symptoms
- Unstable operation of comfort systems (for example, electric windows, central locking)
- Check Engine light comes on
- The control module may periodically shut down
- Errors in other systems associated with this module
Causes
- Poor contact in module connectors
- Blown power fuse
- Open or short circuit in wiring harness
- Power relay fault
- Problems with the control module itself
How to Fix
- Check and replace power supply fuses
- Inspect and clean the module connector contacts
- Check the integrity of the wiring harness
- Check the voltage at the module terminals
- If necessary, replace the control module
Related codes
Error U3504 by Vehicle Brand
FAQ
What does the U3504 code mean?
U3504 is an OBD-II diagnostic trouble code that indicates: Control Module Input Power B Circuit Range/Performance
What causes a U3504 error code?
The most common causes of U3504 include: Poor contact in module connectors; Blown power fuse; Open or short circuit in wiring harness; Power relay fault.
How do I fix a U3504 diagnostic trouble code?
To fix U3504: Check and replace power supply fuses. Inspect and clean the module connector contacts. Check the integrity of the wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U3504?
Yes, but get it checked soon
How much does it cost to fix U3504?
The estimated repair cost for U3504 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat