B2466: Aux Heater Overheat Counter Overrun/System Locked
CriticalBodyDoors & Windows
What does B2466 mean?
B2466 is a diagnostic trouble code indicating "Aux Heater Overheat Counter Overrun/System Locked". This code relates to your vehicle's doors & windows and should be diagnosed to determine the root cause. The severity level helps indicate how urgently this should be addressed.
Symptoms you may notice
- Check engine light (MIL) illuminated on dashboard
- Noticeable change in engine performance
- Unusual sounds or vibrations
- Possible issues with doors & windows operation
- Vehicle may enter reduced power mode (limp mode)
Estimated repair cost
Typical range in Australia (parts + labour)
$300 – $2000 AUD
Common causes
- Faulty doors & windows component
- Wiring or connector issue in the related circuit
- Failed sensor providing incorrect readings
- Software/calibration issue requiring ECU update
- Related component causing secondary fault
What should you do?
This is a critical issue. Stop driving as soon as it is safe to do so and have the vehicle inspected immediately. Continuing to drive could cause further damage or pose a safety risk.
Get a diagnosis for YOUR car
Code B2466 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.