B3122

Keyless Entry Antenna 4

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Problems opening doors using keyless entry
Difficulty starting the engine with the button
The system does not recognize the key in certain areas of the vehicle

Causes

Damage to antenna 4
Open or short circuit in wiring harness
Malfunction of the keyless entry system control module
Antenna power problems

How to Fix

Check antenna integrity 4
Check wiring harness for damage
Check antenna power and ground
Scan the control module for additional errors
If necessary, replace the antenna or wiring harness

Related codes

B3121 B3123 B3124