Toyota-specific code — factory diagnostic data| DTC Data Sheet | |
| Code | U0124 |
| Vehicle | 2014 Toyota Tacoma |
| System | ABS |
| Fault type | Communication |
| Official meaning | Lost Communication with Lateral Acceleration Sensor Module |
| Source | 2014 Toyota Tacoma factory diagnostic information |
Definition source: Toyota factory description. Diagnostic guidance is based on factory-defined fault logic for this code.
U0124 on the 2014 Toyota Tacoma means: Lost Communication with Lateral Acceleration Sensor Module. It is a communication code reported by the ABS.
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Looking for the cross-vehicle definition? Read the generic U0124 article for the SAE-defined fault logic that applies to all manufacturers.
U0124 Quick Answer
U0124 on a 2014 Toyota Tacoma indicates Lost Communication with Lateral Acceleration Sensor Module. Start with a freeze-frame check and a careful inspection of the connector and wiring at the affected device before replacing any parts.
What Does U0124 Mean on a Toyota Tacoma?
On the 2014 Toyota Tacoma, the ABS sets U0124 when it detects a fault matching its official definition: Lost Communication with Lateral Acceleration Sensor Module. This is a manufacturer-specific definition from Toyota factory diagnostic data.
Symptoms
- Warning light for the affected system (check engine, ABS, airbag, or a system indicator depending on the module)
- Reduced or lost function of the abs
- Possible related codes from other modules on the Tacoma CAN/LIN network
Common Causes
- Fault in the component named in the definition (lost communication with lateral acceleration sensor module)
- Open, shorted, or high-resistance wiring in the affected circuit
- Connector corrosion, water ingress, or a backed-out terminal
- Loss of supply voltage or a poor ground at the device
- Module internal fault — confirm wiring and supplies before condemning the module
Diagnostic Approach
For U0124 on the 2014 Toyota Tacoma you’ll want a scan tool with Toyota-enhanced coverage (Techstream-class) — generic OBD-II readers usually will not read U-codes — plus a digital multimeter and the wiring diagram.
- Confirm the code is current, not stored history, and record freeze-frame data.
- Read all modules — related codes often pinpoint the root cause faster than the headline code.
- Inspect and wiggle-test the connector at the named device while watching live data.
- Measure supply voltage and ground integrity at the device; verify the circuit against the Tacoma wiring diagram.
- Substitute or isolate the suspect device only after wiring and supplies check out.
- Clear the code and road-test through one or two drive cycles to confirm the repair.
Possible Fixes
- Repair open/short/high-resistance wiring or a corroded connector
- Restore supply voltage or ground at the affected device
- Replace the failed component named in the definition
- Replace and, where required, initialise/program the module if it is internally faulty
Can I Still Drive With U0124?
It depends on the system. ABS faults that affect braking, the airbag/restraint system, power steering, or stability control should be repaired before further driving. Comfort or convenience faults can usually be deferred briefly, but related codes can mask one another on the Tacoma network — diagnose promptly.
FAQ
Is U0124 specific to the Toyota Tacoma?
The definition here is taken from 2014 Toyota Tacoma factory diagnostic data. The same code may appear on other Toyota models, but the affected module and exact criteria can differ between platforms.
Can I clear U0124 without fixing it?
You can clear it, but if the underlying fault is still present the Tacoma will reset the code on the next drive cycle that runs the relevant monitor. Diagnose the cause first.
Will a generic OBD-II reader show U0124?
Often not — U-codes are manufacturer-specific and usually require a scan tool with Toyota-enhanced coverage such as a Techstream-class tool.
Source
Code definition from 2014 Toyota Tacoma factory diagnostic information (ABS). Symptom, cause, and diagnosis guidance summarised from standard OBD-II diagnostic practice for this platform.