What Does U0155 Mean?
The vehicle's main control module has lost communication with the instrument panel cluster (speedometer/gauge cluster) over the network. This prevents proper display of vehicle information and potential loss of telemetry data.
Common Causes
35%
Faulty instrument panel cluster (internal circuit board failure or corrupted software)
30%
Damaged wiring harness or loose connector at back of instrument cluster
20%
CAN bus network issue (short, open, or termination problem)
10%
Power supply or ground circuit fault to instrument cluster
5%
BCM or ECM software corruption affecting network communication
Diagnostic Steps
1
Step 1: Verify instrument cluster display function (check if gauges, warning lights, or display shows any activity)
2
Step 2: Inspect instrument cluster connector at back of cluster for corrosion, bent pins, or looseness
3
Step 3: Use scan tool to attempt direct communication with IPC module and check for response
4
Step 4: Check power and ground at instrument cluster connector (verify ignition-switched power and battery power)
5
Step 5: Test CAN bus signal integrity at cluster connector using oscilloscope or multimeter resistance test
Estimated Repair Cost
$250 - $1,000
Parts + labor, varies by vehicle and location
The vehicle's main control module has lost communication with the instrument panel cluster (speedometer/gauge cluster) over the network. This prevents proper display of vehicle information and potential loss of telemetry data.
The most common cause of U0155 (Lost Communication With Instrument Panel Cluster (IPC) Control Module) is: Faulty instrument panel cluster (internal circuit board failure or corrupted software)
Typical repair costs for U0155 range from $250 to $1,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Loss of critical driving information including speed, fuel level, warning lights, and engine status. May make vehicle unsafe to operate without proper instrumentation.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0155 to identify the root cause.
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Quick Info
Category
Network
System
Body Control/Information Display
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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