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U0104 on Kia Sportage

Lost Communication with Cruise Control Module

Factory diagnostic protocol and troubleshooting wire for fault code U0104 specifically for the Kia Sportage (2021–2026, 2.5L 4-Cyl (187HP) / 1.6L Turbo Hybrid (227HP) / PHEV (261HP)).

Verified OEM Telemetry & Field Repair Tree
Kia Sportage2021–2026
Kia Sportage
SUV2.5L 4-Cyl (187HP) / 1.6L Turbo Hybrid (227HP) / PHEV (261HP)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Sportage SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Not Recommended
Low urgency level
Est. Repair Cost
$100 - $450 (DIY: $0 - $150)
Parts & Labor DIY
Check U0104 On Another Kia Model:
Diagnose U0104 on Specific Sportage Model Year:

1. Symptoms of U0104 on Kia Sportage

When the Engine Control Module (ECM/PCM) on your Kia Sportage (2.5L 4-Cyl (187HP) / 1.6L Turbo Hybrid (227HP) / PHEV (261HP)) logs fault code U0104, drivers commonly observe:

Adaptive Cruise Control (ACC) disabled on Kia Sportage (2.5L 4-Cyl (187HP) / 1.6L Turbo Hybrid (227HP) / PHEV (261HP))
Pre-Collision System warning light on on Kia Sportage (2.5L 4-Cyl (187HP) / 1.6L Turbo Hybrid (227HP) / PHEV (261HP))
Check Engine Light on on Kia Sportage (2.5L 4-Cyl (187HP) / 1.6L Turbo Hybrid (227HP) / PHEV (261HP))
Kia Sportage OBD-II Port Location
The 16-pin diagnostic connector is located Under driver steering column. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Kia Sportage

Historical warranty claims and technical repair bulletins for Kia Sportage point to the following failure distribution:

55%
Blocked or dirty front radar sensor in grille/bumper (Kia OEM Part)
25%
Blown radar module fuse (Kia OEM Part)
12%
Faulty radar cruise control module (Kia OEM Part)
8%
Misaligned radar sensor following minor bumper bump (Kia OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Kia Sportage.

3. Step-by-Step DIY Repair Guide for Kia Sportage

01
Clean Front Radar Sensor in Grille

Clean snow, ice, mud, or dead bugs off front radar emblem. on the Kia Sportage equipped with 2.5L 4-Cyl (187HP) / 1.6L Turbo Hybrid (227HP) / PHEV (261HP).

Required Tool: Microfiber Towel
02
Check ACC / Radar Fuse

Verify power feed to radar sensor. on the Kia Sportage equipped with 2.5L 4-Cyl (187HP) / 1.6L Turbo Hybrid (227HP) / PHEV (261HP).

Required Tool: Test Light
03
Perform Radar Aiming Calibration

Execute optical/radar alignment procedure if bumper was removed. on the Kia Sportage equipped with 2.5L 4-Cyl (187HP) / 1.6L Turbo Hybrid (227HP) / PHEV (261HP).

Required Tool: Calibration Target, Scan Tool
04
Clear Trouble Codes

Clear DTCs and test cruise on highway. on the Kia Sportage equipped with 2.5L 4-Cyl (187HP) / 1.6L Turbo Hybrid (227HP) / PHEV (261HP).

Required Tool: OBD-II Scanner
Recommended Parts & Testing Tools

Equipment for Diagnosing Kia Sportage (U0104)

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Direct-Fit Replacement Part

Kia Sportage OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for Kia Sportage.

$45 – $95 Prime
Check Fitment on Amazon
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
View on Amazon
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 Kia SportageVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
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Other Common Fault Codes on Kia Sportage

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Kia Sportage:

4. Kia Sportage U0104 FAQs

What causes code U0104 to trigger on a Kia Sportage?

On the Kia Sportage (2.5L 4-Cyl (187HP) / 1.6L Turbo Hybrid (227HP) / PHEV (261HP)), U0104 is most frequently caused by Blocked or dirty front radar sensor in grille/bumper or Blown radar module fuse.

Where is the OBD-II port located on my Kia Sportage?

On the Kia Sportage, the 16-pin DLC diagnostic connector is located Under driver 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 Kia Sportage with code U0104?

Yes. Normal driving is unaffected, but Adaptive Cruise Control will not engage. Given that U0104 carries a Low severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.