What Does U1151 Mean?
Similar to U1150, this indicates a secondary audible warning data communication failure on the SCP network. Represents an additional warning message ID that is invalid or missing.
Common Causes
35%
Failed instrument cluster or chime module
30%
Body control module failure or communication fault
20%
Damaged SCP bus wiring or connectors affecting warning system modules
10%
Poor ground connection at warning system modules
5%
Low battery voltage affecting module communication
Diagnostic Steps
1
Step 1: Compare U1150 and U1151 data in scan tool to identify which specific warning messages are failing
2
Step 2: Check all audible warning triggers (door switches, seatbelt switch, key sensor) for proper operation and data transmission
3
Step 3: Verify SCP bus integrity by measuring voltage and resistance between all connected warning system modules
4
Step 4: Test cluster and BCM for proper voltage supply (12V+) and ground (verify all grounds <0.5 ohms)
5
Step 5: Perform system reconfiguration or module reprogram; replace cluster or BCM if communication remains lost
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
Similar to U1150, this indicates a secondary audible warning data communication failure on the SCP network. Represents an additional warning message ID that is invalid or missing.
The most common cause of U1151 (SCP (J1850) Invalid or Missing Data for Audible Warnings) is: Failed instrument cluster or chime module
Typical repair costs for U1151 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Critical safety warnings may not be audible to the driver, including low fuel, overheating, or brake system alerts. Increases risk of vehicle damage or accidents.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1151 to identify the root cause.
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Quick Info
Category
Network
System
Audible Warning/Alert System Network Communication
Difficulty
Type
Manufacturer
Recommended Tools
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