What Does B2145 Mean?
B2145 indicates a Non-Volatile Memory (NVM) failure related to the RF (Radio Frequency) HR (High Range or possibly Horn/Remote) system in the vehicle's body control module or related control unit. This code means the module has detected corrupted data, inability to read/write stored memory, or communication failure with the memory chip that stores RF-related calibration data and learned parameters. The affected memory typically stores remote keyless entry codes, tire pressure monitoring frequencies, or other RF system configuration data.
Common Causes
45%
Corrupted or failed body control module (BCM) internal non-volatile memory chip
25%
Low or fluctuating vehicle battery voltage causing memory write/read errors
20%
BCM software corruption requiring reprogramming or module replacement
10%
Damaged wiring or poor ground connections to the body control module
Diagnostic Steps
1
Step 1: Perform a battery voltage test with engine off and running using a multimeter - should read 12.4-12.8V off and 13.8-14.4V running. Check for voltage drops or fluctuations that could cause memory corruption
2
Step 2: Inspect the body control module connector for corrosion, pushed-back pins, or moisture intrusion. Check all BCM ground connections for tightness and corrosion using visual inspection and resistance testing (should be less than 0.5 ohms to chassis ground)
3
Step 3: Clear the DTC and attempt to reprogram or reset the BCM using manufacturer-specific software if available. Monitor for immediate code return which indicates hardware failure rather than software corruption
4
Step 4: Test RF-related functions (remote keyless entry, TPMS reception, remote start if equipped) to determine if the NVM failure has affected operational capability or just data storage integrity
5
Step 5: If code persists after reprogramming with stable voltage confirmed, replace the body control module and perform required initialization/programming procedures to restore RF system memory functions
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
B2145 indicates a Non-Volatile Memory (NVM) failure related to the RF (Radio Frequency) HR (High Range or possibly Horn/Remote) system in the vehicle's body control module or related control unit. This code means the module has detected corrupted data, inability to read/write stored memory, or commu...
The most common cause of B2145 (NVM RF HR Failure) is: Corrupted or failed body control module (BCM) internal non-volatile memory chip
Typical repair costs for B2145 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is generally safe to drive as this affects convenience features rather than critical safety systems. Remote keyless entry, TPMS warnings, or remote start functions may be inoperative or unreliable until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B2145 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Body
System
Body Control System / Remote Entry / RF Communication
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
