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U0102AcuraAcura TLX HubAll Acura U0102Medium Severity

U0102 on Acura TLX

Lost Communication with Transfer Case Control Module (TCCM)

Factory diagnostic protocol and troubleshooting wire for fault code U0102 specifically for the Acura TLX (2021–2026, 2.0L Turbo (272HP) / Type S 3.0L Turbo V6 (355HP SH-AWD)).

Verified OEM Telemetry & Field Repair Tree
Acura TLX2021–2026
Acura TLX
Sedan2.0L Turbo (272HP) / Type S 3.0L Turbo V6 (355HP SH-AWD)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
TLX SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Drivable (Short Trip)
Medium urgency level
Est. Repair Cost
$150 - $650 (DIY: $50 - $220)
Parts & Labor DIY
Check U0102 On Another Acura Model:
Diagnose U0102 on Specific TLX Model Year:

1. Symptoms of U0102 on Acura TLX

When the Engine Control Module (ECM/PCM) on your Acura TLX (2.0L Turbo (272HP) / Type S 3.0L Turbo V6 (355HP SH-AWD)) logs fault code U0102, drivers commonly observe:

'Service 4WD' or '4WD System Error' message on dash on Acura TLX (2.0L Turbo (272HP) / Type S 3.0L Turbo V6 (355HP SH-AWD))
4WD selector switch unresponsive (lights out on switch) on Acura TLX (2.0L Turbo (272HP) / Type S 3.0L Turbo V6 (355HP SH-AWD))
Vehicle stuck in 2WD or last selected 4WD mode on Acura TLX (2.0L Turbo (272HP) / Type S 3.0L Turbo V6 (355HP SH-AWD))
Acura TLX OBD-II Port Location
The 16-pin diagnostic connector is located Driver footwell below steering column. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Acura TLX

Historical warranty claims and technical repair bulletins for Acura TLX point to the following failure distribution:

55%
Corroded TCCM power/ground wiring under vehicle (Acura OEM Part)
25%
Blown 4WD / TCCM fuse in engine fuse panel (Acura OEM Part)
12%
Faulty Transfer Case Control Module (Acura OEM Part)
8%
Faulty transfer case shift encoder motor (Acura OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Acura TLX.

3. Step-by-Step DIY Repair Guide for Acura TLX

01
Check 4WD / TCCM Fuses

Inspect ATC / 4WD fuses with test light. on the Acura TLX equipped with 2.0L Turbo (272HP) / Type S 3.0L Turbo V6 (355HP SH-AWD).

Required Tool: Test Light
02
Inspect TCCM Connector

Check module under driver dash or seat for water intrusion. on the Acura TLX equipped with 2.0L Turbo (272HP) / Type S 3.0L Turbo V6 (355HP SH-AWD).

Required Tool: Flashlight
03
Test CAN Bus Wires at TCCM

Verify 2.5V CAN signals reach the module. on the Acura TLX equipped with 2.0L Turbo (272HP) / Type S 3.0L Turbo V6 (355HP SH-AWD).

Required Tool: Multimeter
04
Replace TCCM & Clear Codes

Install replacement module and clear trouble codes. on the Acura TLX equipped with 2.0L Turbo (272HP) / Type S 3.0L Turbo V6 (355HP SH-AWD).

Required Tool: Socket Set, Scan Tool
Recommended Parts & Testing Tools

Equipment for Diagnosing Acura TLX (U0102)

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Direct-Fit Replacement Part

Acura TLX OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for Acura TLX.

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Sensor Signal Voltage Meter

AstroAI Auto-Ranging Digital Multimeter

4.6 / 5.0 (Best Seller)

Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.

$29.99 Prime
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Top Mobile OBD-II Scanner

BlueDriver Bluetooth Pro OBDII Scan Tool

4.7 / 5.0 (50,000+ Reviews)

Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.

Compare OEM & Aftermarket Replacement Sensors for Acura TLXVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
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Other Common Fault Codes on Acura TLX

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Acura TLX:

4. Acura TLX U0102 FAQs

What causes code U0102 to trigger on a Acura TLX?

On the Acura TLX (2.0L Turbo (272HP) / Type S 3.0L Turbo V6 (355HP SH-AWD)), U0102 is most frequently caused by Corroded TCCM power/ground wiring under vehicle or Blown 4WD / TCCM fuse in engine fuse panel.

Where is the OBD-II port located on my Acura TLX?

On the Acura TLX, the 16-pin DLC diagnostic connector is located Driver footwell below steering column. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Acura TLX with code U0102?

Yes, in 2WD. 4WD and Auto 4x4 functions will be inoperative. Given that U0102 carries a Medium severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.