B27FF
A/C Auto Amplifier Configuration Not Implemented
B27FF is an OBD-II diagnostic trouble code meaning: A/C Auto Amplifier Configuration Not Implemented. Common causes: lack of automatic air conditioning amplifier, incorrect firmware of the control unit. Estimated repair cost: $56–167.
Symptoms
- Automatic air conditioner mode does not work
- Unable to adjust climate control settings
- Check Engine Light Is On
Causes
- Lack of automatic air conditioning amplifier
- Incorrect firmware of the control unit
- Incompatibility of air conditioning system components
- Broken or damaged wiring harness
How to Fix
- Check the presence of an automatic air conditioning amplifier
- Scan the control unit for other errors
- Update or reflash the climate control unit
- Check the integrity of the wiring harness and connections
Related codes
FAQ
What does the B27FF code mean?
B27FF is an OBD-II diagnostic trouble code that indicates: A/C Auto Amplifier Configuration Not Implemented
What causes a B27FF error code?
The most common causes of B27FF include: Lack of automatic air conditioning amplifier; Incorrect firmware of the control unit; Incompatibility of air conditioning system components; Broken or damaged wiring harness.
How do I fix a B27FF diagnostic trouble code?
To fix B27FF: Check the presence of an automatic air conditioning amplifier. Scan the control unit for other errors. Update or reflash the climate control unit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B27FF?
Limited driving only, diagnose soon
How much does it cost to fix B27FF?
The estimated repair cost for B27FF is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat