B302A
Mobile Telephone Communications Interface Requested Immobilization
B302A is an OBD-II diagnostic trouble code meaning: Mobile Telephone Communications Interface Requested Immobilization. Common causes: broken or corroded telephone interface wiring harness, immobilizer module malfunction. Estimated repair cost: $56–167.
Symptoms
- Inability to activate remote control functions
- Immobilizer error message on dashboard
- Intermittent problems starting the engine
Causes
- Broken or corroded telephone interface wiring harness
- Immobilizer module malfunction
- Software failure in the head unit
- Problems with power or grounding of the circuit
How to Fix
- Check the integrity of the wiring harness between the modules
- Diagnose power and mass in the circuit
- Scan for software errors in paired modules
- Reflash or replace the faulty module if necessary
Related codes
Error B302A by Vehicle Brand
FAQ
What does the B302A code mean?
B302A is an OBD-II diagnostic trouble code that indicates: Mobile Telephone Communications Interface Requested Immobilization
What causes a B302A error code?
The most common causes of B302A include: Broken or corroded telephone interface wiring harness; Immobilizer module malfunction; Software failure in the head unit; Problems with power or grounding of the circuit.
How do I fix a B302A diagnostic trouble code?
To fix B302A: Check the integrity of the wiring harness between the modules. Diagnose power and mass in the circuit. Scan for software errors in paired modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B302A?
Limited driving only, diagnose soon
How much does it cost to fix B302A?
The estimated repair cost for B302A is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat