B1A55 on 2022-2025 Jeep Grand Wagoneer — Manufacturer-Specific Body/Security System Code
1 vehicles · 1 makes
Most Reported On
B1A55 is an OBD-II diagnostic trouble code meaning “Manufacturer-Specific Body/Security System Code.” B1A55 is a manufacturer-specific body code falling in the security-systems range, and there is no standardized SAE definition that applies across makes. The neighboring B1Axx codes generally concern immobilizer, key/transponder, or security-module communication. A specific name and cause cannot be confirmed without make-specific service information. Read it with a brand-specific tool to establish the precise meaning. This code is most commonly reported on 2022-2025 Jeep Grand Wagoneer.
Common Causes
Diagnostic Tools
To diagnose B1A55, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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FAQ
What does B1A55 mean?
B1A55 stands for "Manufacturer-Specific Body/Security System Code." B1A55 is a manufacturer-specific body code falling in the security-systems range, and there is no standardized SAE definition that applies across makes. The neighboring B1Axx codes generally concern immobilizer, key/transponder, or security-module communication. A specific name and cause cannot be confirmed without make-specific service information. Read it with a brand-specific tool to establish the precise meaning.
What are the most common causes of B1A55?
The most common causes of B1A55 are: Immobilizer or anti-theft system fault, Key/transponder not recognized, Security or body module communication error, Wiring or connector fault in the security circuit, Module configuration or software issue, Faulty body control / security module. The specific cause varies by vehicle.
How much does it cost to fix B1A55?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by B1A55?
Au7o has documented B1A55 across 1 vehicle models from 1 manufacturers: Jeep.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.