U0325
Software Incompatibility With Auxiliary Heater Control Module
U0325 is an OBD-II diagnostic trouble code meaning: Software Incompatibility With Auxiliary Heater Control Module. Common causes: outdated ecu software, incompatible heater module software version. Estimated repair cost: ~$167.
Symptoms
- Auxiliary heater does not work
- Error message on the dashboard
- Problems with climate control
- Check Engine light comes on
- Reduced functionality of the heating system
Causes
- Outdated ECU software
- Incompatible heater module software version
- Data corruption in module memory
- Problems with communication between modules
- Incorrect installation or module replacement
How to Fix
- Check software versions in the ECU and heater module
- Update the software to the latest version
- Check the integrity of the wiring harness between the modules
- Perform CAN bus diagnostics
- If necessary, reflash or replace the heater module
Related codes
Error U0325 by Vehicle Brand
FAQ
What does the U0325 code mean?
U0325 is an OBD-II diagnostic trouble code that indicates: Software Incompatibility With Auxiliary Heater Control Module
What causes a U0325 error code?
The most common causes of U0325 include: Outdated ECU software; Incompatible heater module software version; Data corruption in module memory; Problems with communication between modules.
How do I fix a U0325 diagnostic trouble code?
To fix U0325: Check software versions in the ECU and heater module. Update the software to the latest version. Check the integrity of the wiring harness between the modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0325?
Yes, but get it checked soon
How much does it cost to fix U0325?
The estimated repair cost for U0325 is ~$167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat