B2402
Audio CD/DJ Thermal Shutdown Fault
B2402 is an OBD-II diagnostic trouble code meaning: Audio CD/DJ Thermal Shutdown Fault. Common causes: insufficient ventilation of the audio unit, cooling system contamination (dust, debris). Estimated repair cost: $33–167.
Symptoms
- Turning off the audio system when playing CD/DJ
- Audio unit overheating
- Burning smell from the head unit area
- Inability to play CD/DJ even after cooling
Causes
- Insufficient ventilation of the audio unit
- Cooling system contamination (dust, debris)
- Cooling fan malfunction (if any)
- Short circuit in the audio system power supply circuit
- Malfunction of the audio system control unit
How to Fix
- Allow the audio system to cool (30-60 minutes)
- Check the head unit vents for blockages.
- Check wiring harness and connectors for damage
- Diagnose the audio system control unit
- Replace faulty components (fan, control unit, etc.)
Related codes
FAQ
What does the B2402 code mean?
B2402 is an OBD-II diagnostic trouble code that indicates: Audio CD/DJ Thermal Shutdown Fault
What causes a B2402 error code?
The most common causes of B2402 include: Insufficient ventilation of the audio unit; Cooling system contamination (dust, debris); Cooling fan malfunction (if any); Short circuit in the audio system power supply circuit.
How do I fix a B2402 diagnostic trouble code?
To fix B2402: Allow the audio system to cool (30-60 minutes). Check the head unit vents for blockages.. Check wiring harness and connectors for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B2402?
Yes, but get it checked soon
How much does it cost to fix B2402?
The estimated repair cost for B2402 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat