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U0415 on Subaru Outback

Invalid Data Received From Anti-Lock Brake System (ABS) Module

Factory diagnostic protocol and troubleshooting wire for fault code U0415 specifically for the Subaru Outback (2020–2026, 2.5L Boxer-4 (FB25D 182HP) / 2.4L Turbocharged Boxer-4 (FA24F 260HP XT)).

Verified OEM Telemetry & Field Repair Tree
Subaru Outback2020–2026
Subaru Outback
SUV2.5L Boxer-4 (FB25D 182HP) / 2.4L Turbocharged Boxer-4 (FA24F 260HP XT)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Outback SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Drivable (Short Trip)
High urgency level
Est. Repair Cost
$120 - $450 (DIY: $30 - $150)
Parts & Labor DIY
Check U0415 On Another Subaru Model:
Diagnose U0415 on Specific Outback Model Year:

1. Symptoms of U0415 on Subaru Outback

When the Engine Control Module (ECM/PCM) on your Subaru Outback (2.5L Boxer-4 (FB25D 182HP) / 2.4L Turbocharged Boxer-4 (FA24F 260HP XT)) logs fault code U0415, drivers commonly observe:

Traction Control, ABS, and 4WD warning lights on on Subaru Outback (2.5L Boxer-4 (FB25D 182HP) / 2.4L Turbocharged Boxer-4 (FA24F 260HP XT))
Cruise control inoperative on Subaru Outback (2.5L Boxer-4 (FB25D 182HP) / 2.4L Turbocharged Boxer-4 (FA24F 260HP XT))
Speedometer erratic on Subaru Outback (2.5L Boxer-4 (FB25D 182HP) / 2.4L Turbocharged Boxer-4 (FA24F 260HP XT))
Subaru Outback OBD-II Port Location
The 16-pin diagnostic connector is located Under driver dash, left of steering column above pedals. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Subaru Outback

Historical warranty claims and technical repair bulletins for Subaru Outback point to the following failure distribution:

55%
Faulty wheel speed sensor reporting invalid speed data to the ABS module (Subaru OEM Part)
25%
Corroded ABS module wiring (Subaru OEM Part)
12%
Mismatched tire sizes confusing wheel speed calculation (Subaru OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Subaru Outback.

3. Step-by-Step DIY Repair Guide for Subaru Outback

01
Scan ABS Module for Wheel Speed Faults

Check ABS module for wheel speed codes (C0035, C0040, etc.). on the Subaru Outback equipped with 2.5L Boxer-4 (FB25D 182HP) / 2.4L Turbocharged Boxer-4 (FA24F 260HP XT).

Required Tool: ABS Scanner
02
Check Tire Sizes and Pressures

Ensure all 4 tires are identical size and correctly inflated. on the Subaru Outback equipped with 2.5L Boxer-4 (FB25D 182HP) / 2.4L Turbocharged Boxer-4 (FA24F 260HP XT).

Required Tool: Tire Gauge
03
Repair Root ABS Wheel Speed Sensor

Replace damaged wheel speed sensor and clean tone ring. on the Subaru Outback equipped with 2.5L Boxer-4 (FB25D 182HP) / 2.4L Turbocharged Boxer-4 (FA24F 260HP XT).

Required Tool: Socket Set
04
Clear All System Codes

Clear codes across PCM, ABS, and 4WD modules. on the Subaru Outback equipped with 2.5L Boxer-4 (FB25D 182HP) / 2.4L Turbocharged Boxer-4 (FA24F 260HP XT).

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

Equipment for Diagnosing Subaru Outback (U0415)

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Direct-Fit Replacement Part

Subaru Outback OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for Subaru Outback.

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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.

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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 Subaru Outback

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Subaru Outback:

4. Subaru Outback U0415 FAQs

What causes code U0415 to trigger on a Subaru Outback?

On the Subaru Outback (2.5L Boxer-4 (FB25D 182HP) / 2.4L Turbocharged Boxer-4 (FA24F 260HP XT)), U0415 is most frequently caused by Faulty wheel speed sensor reporting invalid speed data to the ABS module or Corroded ABS module wiring.

Where is the OBD-II port located on my Subaru Outback?

On the Subaru Outback, the 16-pin DLC diagnostic connector is located Under driver dash, left of steering column above pedals. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Subaru Outback with code U0415?

Caution. Electronic Stability, Traction Control, and 4WD may be disabled. Given that U0415 carries a High severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.