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U0102 on Chrysler Voyager

Lost Communication with Transfer Case Control Module (TCCM)

Factory diagnostic protocol and troubleshooting wire for fault code U0102 specifically for the Chrysler Voyager (2020–2026, 3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic)).

Verified OEM Telemetry & Field Repair Tree
Chrysler Voyager2020–2026
Chrysler Voyager
Van3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Voyager 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 Chrysler Model:
Diagnose U0102 on Specific Voyager Model Year:

1. Symptoms of U0102 on Chrysler Voyager

When the Engine Control Module (ECM/PCM) on your Chrysler Voyager (3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic)) logs fault code U0102, drivers commonly observe:

'Service 4WD' or '4WD System Error' message on dash on Chrysler Voyager (3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic))
4WD selector switch unresponsive (lights out on switch) on Chrysler Voyager (3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic))
Vehicle stuck in 2WD or last selected 4WD mode on Chrysler Voyager (3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic))
Chrysler Voyager OBD-II Port Location
The 16-pin diagnostic connector is located Driver lower kick panel near hood release lever. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Chrysler Voyager

Historical warranty claims and technical repair bulletins for Chrysler Voyager point to the following failure distribution:

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

3. Step-by-Step DIY Repair Guide for Chrysler Voyager

01
Check 4WD / TCCM Fuses

Inspect ATC / 4WD fuses with test light. on the Chrysler Voyager equipped with 3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic).

Required Tool: Test Light
02
Inspect TCCM Connector

Check module under driver dash or seat for water intrusion. on the Chrysler Voyager equipped with 3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic).

Required Tool: Flashlight
03
Test CAN Bus Wires at TCCM

Verify 2.5V CAN signals reach the module. on the Chrysler Voyager equipped with 3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic).

Required Tool: Multimeter
04
Replace TCCM & Clear Codes

Install replacement module and clear trouble codes. on the Chrysler Voyager equipped with 3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic).

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

Equipment for Diagnosing Chrysler Voyager (U0102)

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Direct-Fit Replacement Part

Chrysler Voyager OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for Chrysler Voyager.

$45 – $95 Prime
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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.

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Other Common Fault Codes on Chrysler Voyager

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Chrysler Voyager:

4. Chrysler Voyager U0102 FAQs

What causes code U0102 to trigger on a Chrysler Voyager?

On the Chrysler Voyager (3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic)), 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 Chrysler Voyager?

On the Chrysler Voyager, the 16-pin DLC diagnostic connector is located Driver lower kick panel near hood release lever. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Chrysler Voyager 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.