What Does U0234 Mean?
The convenience recall module, which stores and recalls driver preferences for seat position, mirrors, and climate settings, has lost communication with the network. This module enables personalized settings for multiple drivers.
Common Causes
35%
Defective convenience recall module or internal circuit failure
30%
Corroded or damaged module connector and wiring
20%
Power supply or ground circuit fault to the module
10%
CAN bus communication line fault
5%
Module software glitch requiring reprogramming
Diagnostic Steps
1
Step 1: Verify power and ground supply to the convenience recall module using a digital multimeter
2
Step 2: Inspect module connector for bent pins, corrosion, or moisture intrusion
3
Step 3: Check CAN bus signal integrity at the module using an oscilloscope or multimeter
4
Step 4: Perform a hard reset by disconnecting battery for 10 minutes to clear temporary communication faults
5
Step 5: Replace module if all circuits test good and reprogram with vehicle VIN and configuration data
Estimated Repair Cost
$200 - $650
Parts + labor, varies by vehicle and location
The convenience recall module, which stores and recalls driver preferences for seat position, mirrors, and climate settings, has lost communication with the network. This module enables personalized settings for multiple drivers.
The most common cause of U0234 (Lost Communication With Convenience Recall Module) is: Defective convenience recall module or internal circuit failure
Typical repair costs for U0234 range from $200 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No direct safety impact. Driver memory settings for seat, mirrors, and climate will not function but vehicle remains safe to drive.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0234 to identify the root cause.
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Quick Info
Category
Network
System
Body Control/Comfort Systems
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
