OBD-II Diagnostic Trouble Code
U0415 — Invalid Data Received From ABS Control Module
U0415 means a module, usually the engine or transmission controller, received invalid data from the ABS control module. The message arrived but values such as wheel speed or brake status were implausible or out of range. Usually the ABS module has its own active fault, often a wheel speed sensor problem.
Severity 3/5
Truck-relevant
Service this week
Severity
Service this week
Invalid Data Received From ABS Control Module
Code
U0415
Category
Network
Subsystem
Network
Truck-relevant
Yes
What this means for truckers
U0415 (Invalid Data Received From ABS Control Module) — ABS module data is malformed.
Before you replace parts — try this first
U0415 on the Network system is most often wheel speed sensor or tone ring problem causing invalid abs speed data — not a dead part. On commercial diesels especially, work these in order before spending money on parts:
- Confirm the symptoms. Match what your truck is doing to the Symptoms section below. If the code is set but the symptoms are not there, clear the code and re-test after a drive cycle — it may not return.
- Clean and dry the sensor connector. Water, road salt, or oil seeping into a connector is the #1 fake sensor failure. Disconnect, look for green corrosion or moisture, spray with electrical contact cleaner, dry, reseat. Many faults clear here for $0.
- Inspect the wiring harness. Trace the wire from the sensor toward the ECM — look for chafing against the engine block, melted insulation near the turbo or exhaust, or pinch points where a clamp has rubbed through.
- Test the sensor before swapping it. Most Common Causes (below) list the expected voltage or resistance range — a $20 multimeter saves a $300 sensor swap that does not fix the problem.
- Only then, replace the part. Use the OEM or a tier-1 aftermarket. Cheap sensors throw the same code in two weeks.
Symptoms
ABS and traction lights are on, cruise control or engine braking may be disabled, the speedometer may read wrong on trucks that use ABS speed, and transmission shift quality may be affected.
Common causes
- CommonWheel speed sensor or tone ring problem causing invalid ABS speed data ($100–$500)
- OccasionalActive ABS module fault such as low supply voltage or an internal input fault ($150–$800)
- OccasionalNetwork wiring or connector issue at the ABS module ($150–$600)
- RareABS module internal failure or wrong software ($600–$2000)
How to fix
Read and repair ABS codes first, checking sensor air gap and output
When to use: Always first
Compare wheel speeds on a scan tool during a road test
When to use: When the code is intermittent
Inspect the ABS module connector and network wiring
When to use: When no ABS codes are present
Reprogram or replace the ABS module
When to use: After other causes are ruled out
Affects most
No specific vehicle pattern found in our complaint database. This code can appear on any vehicle that supports OBD-II diagnostics.
Related
- → Browse all DTC trouble codes
- → Decode a VIN to check codes for your truck
- → Owner-operator maintenance guides
- → U0401 — Invalid Data Received From ECM/PCM A
- → U0402 — Invalid Data Received From TCM
- → U0403 — Invalid Data Received From Cruise Control Module
- → U0404 — Invalid Data Received From Gear Shift Control Module
- → U0418 — Invalid Data Received From Brake System Control Module
Frequently Asked Questions
Can I drive with code U0415?
U0415 is severity 3 — plan service within a few days. Performance is likely degraded already (you may feel reduced power, harsher shifts, or slightly worse fuel economy). Continuing to drive risks additional damage to adjacent components.
How much does it cost to fix U0415 on a commercial truck?
Total repair cost ranges $100–$2000 depending on the root cause. The cheapest fix is usually the first one listed below — Wheel speed sensor or tone ring problem causing invalid ABS speed data — which is also the most common. On commercial trucks the cost is usually higher than passenger vehicles due to part availability and shop labor rates ($120–185/hour at most truck shops, vs $90–130 at general auto shops). DIY-capable fixes (sensors, hoses, filters) are at the low end; major component replacements (turbo actuator, high-pressure fuel pump, transmission solenoid pack) are at the high end. Always diagnose with a scan tool BEFORE replacing parts — guessing wrong on a $1,500 turbo actuator when the actual issue was a $30 boost hose is a common expensive mistake.
Will U0415 fail a DOT inspection?
U0415 is generally not a direct DOT inspection fail item by itself. Inspectors focus on safety-critical systems (brakes, steering, tires, lights, hours-of-service). However, the check engine light alone can trigger additional inspection scrutiny. Best practice: fix the code and clear it before a planned inspection.
What's the difference between U0415 and related codes?
U0415 is closely related to: U0401 (Invalid Data Received From ECM/PCM A), U0402 (Invalid Data Received From TCM), U0403 (Invalid Data Received From Cruise Control Module), U0404 (Invalid Data Received From Gear Shift Control Module). These codes share the same subsystem (network) and often appear together. If you see this code, scan for the full code list — fixing the root cause usually clears multiple companion codes at once. If only U0415 is set without the companions, the issue is more isolated.
How do I prevent U0415 from coming back after a repair?
For U0415 (Invalid Data Received From ABS Control Module), prevention centers on the network system. Pay attention to ground connections at every PM — bad grounds are 70% of communication codes. Inspect harness routing for chafe points. Don't disconnect modules with the key on.