What Does U0167 Mean?
The engine control module or body control module has lost communication with the vehicle's immobilizer control module. This module is responsible for anti-theft protection by preventing engine start without a valid key.
Safety Warning
Vehicle may not start or may stall unexpectedly. Potential to become stranded; immediate repair recommended.
Common Causes
30%
Faulty immobilizer control module or internal failure
25%
Damaged wiring or poor connections between modules
20%
Low battery voltage or power supply issue to immobilizer
15%
CAN bus communication network fault
10%
Module programming error or synchronization issue
Diagnostic Steps
1
Step 1: Check battery voltage and verify it is above 12.4V; charge or replace battery if low
2
Step 2: Verify power and ground circuits to immobilizer control module with multimeter
3
Step 3: Inspect all connectors and wiring between immobilizer module, BCM, and PCM for damage or corrosion
4
Step 4: Use scan tool to attempt communication with immobilizer module and check for additional codes
5
Step 5: Verify module programming and key synchronization; reprogram or replace immobilizer module as needed
Estimated Repair Cost
$250 - $1,200
Parts + labor, varies by vehicle and location
The engine control module or body control module has lost communication with the vehicle's immobilizer control module. This module is responsible for anti-theft protection by preventing engine start without a valid key.
The most common cause of U0167 (Lost Communication With Vehicle Immobilizer Control Module) is: Faulty immobilizer control module or internal failure
Typical repair costs for U0167 range from $250 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may not start or may stall unexpectedly. Potential to become stranded; immediate repair recommended.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0167 to identify the root cause.
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Quick Info
Category
Network
System
Anti-Theft / Immobilizer System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
