Immobilizer Antenna
Table of contents
B1A7B JEEP Possible Causes
- Faulty Immobilizer Antenna
- Immobilizer Antenna harness is open or shorted
- Immobilizer Antenna circuit poor electrical connection
- Faulty Keyless Ignition Nod (KIN)
- Faulty Ignition Node Module (IGNM)
- Faulty Radio Frequency Hub (RFH) Module
How do I fix code B1A7B JEEP?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- B1A7B-01 IMMOBILIZER ANTENNA (KIN/IGNM) GENERAL ELECTRICAL FAILURE
- B1A7B-62 IMMOBILIZER ANTENNA (KIN/IGNM) SIGNAL COMPARE FAILURE
Cost of diagnosing the B1A7B JEEP code
The cost of diagnosing the B1A7B JEEP code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B1A7B JEEP Description
The Keyless Ignition Nod (KIN) / Ignition Node Module (IGNM) antenna supply voltage is sampled and found to be out of range of the expected value (below 8.0 or above 16.0 volts) or when the hard-wired ignition run/start line between the KIN / IGNM and Radio Frequency Hub (RF Hub) (RFH) indicates a different ignition position from the received signal of the LIN bus between the KIN / IGNM and the RFH.