C2120 on 2020-2025 Jeep Gladiator — Manufacturer-Specific TPMS Transmitter/Sensor Fault
1 vehicles · 1 makes · $300-$1,500 repair
Most Reported On
C2120 is an OBD-II diagnostic trouble code meaning “Manufacturer-Specific TPMS Transmitter/Sensor Fault.” C2120 is a manufacturer-specific chassis code within the Tire Pressure Monitoring System family (frequently Toyota/Lexus). It generally indicates a fault with a tire pressure transmitter (wheel sensor) or its signal reception, such as a missing, weak, or implausible transmission. The exact definition varies by maker. The TPMS warning light typically illuminates and one or more tire pressures may be unavailable; verify pressures manually. This code is most commonly reported on 2020-2025 Jeep Gladiator, with repair costs ranging from $300 to $1,500.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose C2120, 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 C2120 mean?
C2120 stands for "Manufacturer-Specific TPMS Transmitter/Sensor Fault." C2120 is a manufacturer-specific chassis code within the Tire Pressure Monitoring System family (frequently Toyota/Lexus). It generally indicates a fault with a tire pressure transmitter (wheel sensor) or its signal reception, such as a missing, weak, or implausible transmission. The exact definition varies by maker. The TPMS warning light typically illuminates and one or more tire pressures may be unavailable; verify pressures manually.
What are the most common causes of C2120?
The most common causes of C2120 are: Weak or dead TPMS sensor battery, Faulty or missing tire pressure sensor, Sensor ID not registered/initialized, Receiver, antenna, or wiring fault, Radio-frequency interference, TPMS control module fault. The specific cause varies by vehicle.
How much does it cost to fix C2120?
Repair costs for C2120 range from $300 to $1,500, depending on the vehicle and root cause.
Which vehicles are affected by C2120?
Au7o has documented C2120 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.