U12AB
FM Antenna Error
U12AB is an OBD-II diagnostic trouble code meaning: FM Antenna Error. Common causes: antenna wire break, oxidation of antenna connector contacts. Estimated repair cost: $6–56.
Symptoms
- Poor FM radio reception
- Complete absence of FM signal
- Intermittent radio interference
- The radio volume changes on its own
Causes
- Antenna wire break
- Oxidation of antenna connector contacts
- Antenna amplifier malfunction
- Antenna damage (mechanical or corrosion)
- Problems with the audio system head unit
How to Fix
- Check the integrity of the antenna cable
- Clean the antenna connector contacts
- Check the operation of the antenna amplifier (if any)
- Replace the antenna if damage is detected
- Test the head unit with a different antenna
Related codes
FAQ
What does the U12AB code mean?
U12AB is an OBD-II diagnostic trouble code that indicates: FM Antenna Error
What causes a U12AB error code?
The most common causes of U12AB include: Antenna wire break; Oxidation of antenna connector contacts; Antenna amplifier malfunction; Antenna damage (mechanical or corrosion).
How do I fix a U12AB diagnostic trouble code?
To fix U12AB: Check the integrity of the antenna cable. Clean the antenna connector contacts. Check the operation of the antenna amplifier (if any). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U12AB?
Yes, but get it checked soon
How much does it cost to fix U12AB?
The estimated repair cost for U12AB is $6–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat