What Does U0555 Mean?
A control module on the vehicle network has received invalid or corrupted data from the Remote Start Module. The remote start system may not function correctly due to communication errors between the remote start module and other vehicle systems.
Common Causes
35%
Failed Remote Start Module with internal circuit board or processor failure
30%
Aftermarket remote start system improperly integrated causing data format conflicts
20%
Damaged wiring harness or poor connections at remote start module
10%
Software version incompatibility requiring module reprogramming
5%
Insufficient power supply or ground fault at remote start module
Diagnostic Steps
1
Step 1: Verify whether remote start module is OEM or aftermarket, check installation documentation for proper integration procedure
2
Step 2: Access remote start module data stream and monitor transmitted parameters for missing or out-of-range values
3
Step 3: Inspect remote start module installation location, typically under dash or near steering column, check all connections for proper seating and no corrosion
4
Step 4: Test power and ground circuits at remote start module with multimeter, verify proper voltage and ground resistance (less than 0.5 ohms)
5
Step 5: If aftermarket system is installed, verify bypass module is programmed correctly and interface harness matches vehicle protocol; attempt module reset or reprogramming
Estimated Repair Cost
$100 - $650
Parts + labor, varies by vehicle and location
A control module on the vehicle network has received invalid or corrupted data from the Remote Start Module. The remote start system may not function correctly due to communication errors between the remote start module and other vehicle systems.
The most common cause of U0555 (Invalid Data Received From Remote Start Module) is: Failed Remote Start Module with internal circuit board or processor failure
Typical repair costs for U0555 range from $100 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Remote start function may be disabled, but normal key starting should remain functional. No direct safety impact, though loss of remote start in extreme weather could be a convenience and comfort concern.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0555 to identify the root cause.
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Quick Info
Category
Network
System
Remote Start / Security Network
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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